• high curent PCB connector

    From john larkin@21:1/5 to All on Fri Feb 14 08:37:53 2025
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that
    idea wasn't popular.

    --- SoupGate-Win32 v1.05
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  • From bitrex@21:1/5 to john larkin on Fri Feb 14 12:44:17 2025
    On 2/14/2025 11:37 AM, john larkin wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that
    idea wasn't popular.


    Nice device, as I understand it what it does is if your cables are too
    good it randomly makes some of them faulty, and then the user has to
    figure out which one of them it is. Makes life more interesting!

    --
    This email has been checked for viruses by AVG antivirus software.
    www.avg.com

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Liz Tuddenham@21:1/5 to john larkin on Fri Feb 14 18:22:55 2025
    john larkin <JL@gct.com> wrote:

    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that
    idea wasn't popular.

    In the past I have used PCB-mounting screw terminal blocks with
    wire-protection leaves. I had a whole batch of surplus stock, some were
    in groups of 4, others in groups of 6 or more. The trick is to put a
    row of blocks on the edge of the PCB but screw into them the solder pins
    of another set of blocks. The wires are termnated in the second set of
    blocks which can then be released from the ones on the board as a single
    unit. (Lacing the wires to form a solid cable will help keep the blocks together in the right order.)

    It doesn't prevent the whole thing from being assembled one step out of
    line, but that could be prevented by having some solid obstruction at
    each end of the row. As the machine I built had several different
    boards, I made sure the pairs of connectors were drilled with a pattern
    of shallow indentations which were filled with coloured paint to
    indicate which ones should be mated together.


    --
    ~ Liz Tuddenham ~
    (Remove the ".invalid"s and add ".co.uk" to reply)
    www.poppyrecords.co.uk

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From john larkin@21:1/5 to bitrex on Fri Feb 14 11:27:30 2025
    On Fri, 14 Feb 2025 12:44:17 -0500, bitrex <user@example.net> wrote:

    On 2/14/2025 11:37 AM, john larkin wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that
    idea wasn't popular.


    Nice device, as I understand it what it does is if your cables are too
    good it randomly makes some of them faulty, and then the user has to
    figure out which one of them it is. Makes life more interesting!

    The idea is to simulate what a cable fault between two boxes would do
    on an aircraft. This is also called a guillotine box.

    Our customer used to make what they call a FITS box to do this, but it
    wasn't very reliable and has got hard to make. So we did a version. It
    has polyfuses to help protect the relays. We added voltage and current measurement and BIST, built-in self test.

    It can be used to snoop voltages and currents in a cable too.

    The board is HEAVY.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From piglet@21:1/5 to john larkin on Fri Feb 14 19:51:08 2025
    john larkin <JL@gct.com> wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that
    idea wasn't popular.



    Phoenix do make 20 pin version (as two rows of ten) with 10 amp per pin on
    200 mil pitch.

    --
    piglet

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Phil Hobbs@21:1/5 to piglet on Sat Feb 15 00:20:25 2025
    piglet <erichpwagner@hotmail.com> wrote:
    john larkin <JL@gct.com> wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that
    idea wasn't popular.



    Phoenix do make 20 pin version (as two rows of ten) with 10 amp per pin on 200 mil pitch.


    Do they actually make them m, as in somebody has them for sale, or are they just listed in a catalogue?

    Connector catalogs are full of things that they would love to make for you
    if you want to order 100,000 pieces and can wait six months.

    Cheers

    Phil Hobbs

    --
    Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Bill Sloman@21:1/5 to john larkin on Sat Feb 15 12:24:41 2025
    On 15/02/2025 3:37 am, john larkin wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that
    idea wasn't popular.

    I was fond of the DIN 41612 mixed signal connectors. The basic connector
    has three rows of pins for a total of 96, but the mixed signal variant
    had circular holes that knocked out 9 pins and let you put in coax plugs
    and sockets or 20A heavy duty high current plugs and sockets.

    https://au.element14.com/harting/09030006114/heavy-duty-contact-pin-crimp-20a/dp/3679978

    --
    Bill Sloman, Sydney

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From john larkin@21:1/5 to erichpwagner@hotmail.com on Fri Feb 14 19:34:35 2025
    On Fri, 14 Feb 2025 19:51:08 -0000 (UTC), piglet
    <erichpwagner@hotmail.com> wrote:

    john larkin <JL@gct.com> wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that
    idea wasn't popular.



    Phoenix do make 20 pin version (as two rows of ten) with 10 amp per pin on >200 mil pitch.

    I've got the Phoenix people working on it.

    We need a mate that has screws to clamp the wires (not those push
    spring things) and extraction cams. Even the 5 pin version is about
    impossible to unmate without the cams.

    What's weird about the Phoenix and Weidmuller connectors is that they
    have no pin numbering convention or markings. You just make up
    whatever you want, and have to explain it to the customers.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From piglet@21:1/5 to Phil Hobbs on Sat Feb 15 14:13:20 2025
    On 15/02/2025 12:20 am, Phil Hobbs wrote:
    piglet <erichpwagner@hotmail.com> wrote:
    john larkin <JL@gct.com> wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that
    idea wasn't popular.



    Phoenix do make 20 pin version (as two rows of ten) with 10 amp per pin on >> 200 mil pitch.


    Do they actually make them m, as in somebody has them for sale, or are they just listed in a catalogue?

    Connector catalogs are full of things that they would love to make for you
    if you want to order 100,000 pieces and can wait six months.

    Cheers

    Phil Hobbs


    But JL's customers are aerospace so will be used to exotic, hard to find connectors - would they respect him for using an easily buyable connector :)

    piglet

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From john larkin@21:1/5 to All on Sat Feb 15 08:17:50 2025
    On Sat, 15 Feb 2025 14:13:20 +0000, piglet <erichpwagner@hotmail.com>
    wrote:

    On 15/02/2025 12:20 am, Phil Hobbs wrote:
    piglet <erichpwagner@hotmail.com> wrote:
    john larkin <JL@gct.com> wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module >>>> like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that >>>> idea wasn't popular.



    Phoenix do make 20 pin version (as two rows of ten) with 10 amp per pin on >>> 200 mil pitch.


    Do they actually make them m, as in somebody has them for sale, or are they >> just listed in a catalogue?

    Connector catalogs are full of things that they would love to make for you >> if you want to order 100,000 pieces and can wait six months.

    Cheers

    Phil Hobbs


    But JL's customers are aerospace so will be used to exotic, hard to find >connectors - would they respect him for using an easily buyable connector :)

    piglet

    The nice thing about the Phoenix connectors is that you don't need a
    soldring iron or pins and crimp tools to terminate wires, just a small screwdriver.

    My customers like the Phoenix's. We sell ground test gear, not stuff
    that flies, so we don't have to use those crazy MIL type circular
    connectors.

    Somebody does want to fly some P940s, but only in a flying test bed,
    so commercial parts are still OK. Some of the boards are heavy and
    flexy, so we are adding some vibration damping in the chassis.

    (A flying test bed is an old 747 that they swap one engine out, or
    strap one more on the side, to test a new engine at altitude. They
    fill it with test gear and engineers and witnesses.)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Bill Sloman@21:1/5 to john larkin on Sun Feb 16 16:11:12 2025
    On 16/02/2025 3:17 am, john larkin wrote:
    On Sat, 15 Feb 2025 14:13:20 +0000, piglet <erichpwagner@hotmail.com>
    wrote:

    On 15/02/2025 12:20 am, Phil Hobbs wrote:
    piglet <erichpwagner@hotmail.com> wrote:
    john larkin <JL@gct.com> wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module >>>>> like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that >>>>> idea wasn't popular.



    Phoenix do make 20 pin version (as two rows of ten) with 10 amp per pin on
    200 mil pitch.


    Do they actually make them m, as in somebody has them for sale, or are they >>> just listed in a catalogue?

    Connector catalogs are full of things that they would love to make for you >>> if you want to order 100,000 pieces and can wait six months.

    Cheers

    Phil Hobbs


    But JL's customers are aerospace so will be used to exotic, hard to find
    connectors - would they respect him for using an easily buyable connector :) >>
    piglet

    The nice thing about the Phoenix connectors is that you don't need a
    soldring iron or pins and crimp tools to terminate wires, just a small screwdriver.

    That's not nice. It's just cheap. At Cambridge Instruments the argument
    for going over to crimp connectors was that you found a lot less duff connections when you were putting product through final test.

    The parts and tools were more expensive, but fault-finding and fault
    correction were expensive enough to tip the balance.

    <snip>

    --
    Bill Sloman, Sydney

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Liz Tuddenham@21:1/5 to Bill Sloman on Sun Feb 16 10:43:03 2025
    Bill Sloman <bill.sloman@ieee.org> wrote:

    On 16/02/2025 3:17 am, john larkin wrote:
    On Sat, 15 Feb 2025 14:13:20 +0000, piglet <erichpwagner@hotmail.com> wrote:

    On 15/02/2025 12:20 am, Phil Hobbs wrote:
    piglet <erichpwagner@hotmail.com> wrote:
    john larkin <JL@gct.com> wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a
    module like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5 >>>>> pins.

    I was planning to use four of them, with two on a baby board, but
    that idea wasn't popular.



    Phoenix do make 20 pin version (as two rows of ten) with 10 amp per >>>> pin on 200 mil pitch.


    Do they actually make them m, as in somebody has them for sale, or are >>> they just listed in a catalogue?

    Connector catalogs are full of things that they would love to make for >>> you if you want to order 100,000 pieces and can wait six months.

    Cheers

    Phil Hobbs


    But JL's customers are aerospace so will be used to exotic, hard to
    find connectors - would they respect him for using an easily buyable
    connector :)

    piglet

    The nice thing about the Phoenix connectors is that you don't need a soldring iron or pins and crimp tools to terminate wires, just a small screwdriver.

    That's not nice. It's just cheap. At Cambridge Instruments the argument
    for going over to crimp connectors was that you found a lot less duff connections when you were putting product through final test.

    The parts and tools were more expensive, but fault-finding and fault correction were expensive enough to tip the balance.

    Was the cost of repair throughout the equipment's lifetime taken into
    account? Faulty crimps, especially if the wires are a bit short, can
    take ages to put right.


    --
    ~ Liz Tuddenham ~
    (Remove the ".invalid"s and add ".co.uk" to reply)
    www.poppyrecords.co.uk

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Bill Sloman@21:1/5 to Liz Tuddenham on Mon Feb 17 00:28:40 2025
    On 16/02/2025 9:43 pm, Liz Tuddenham wrote:
    Bill Sloman <bill.sloman@ieee.org> wrote:

    On 16/02/2025 3:17 am, john larkin wrote:
    On Sat, 15 Feb 2025 14:13:20 +0000, piglet <erichpwagner@hotmail.com>
    wrote:

    On 15/02/2025 12:20 am, Phil Hobbs wrote:
    piglet <erichpwagner@hotmail.com> wrote:
    john larkin <JL@gct.com> wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a
    module like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5 >>>>>>> pins.

    I was planning to use four of them, with two on a baby board, but >>>>>>> that idea wasn't popular.



    Phoenix do make 20 pin version (as two rows of ten) with 10 amp per >>>>>> pin on 200 mil pitch.


    Do they actually make them m, as in somebody has them for sale, or are >>>>> they just listed in a catalogue?

    Connector catalogs are full of things that they would love to make for >>>>> you if you want to order 100,000 pieces and can wait six months.

    Cheers

    Phil Hobbs


    But JL's customers are aerospace so will be used to exotic, hard to
    find connectors - would they respect him for using an easily buyable
    connector :)

    piglet

    The nice thing about the Phoenix connectors is that you don't need a
    soldring iron or pins and crimp tools to terminate wires, just a small
    screwdriver.

    That's not nice. It's just cheap. At Cambridge Instruments the argument
    for going over to crimp connectors was that you found a lot less duff
    connections when you were putting product through final test.

    The parts and tools were more expensive, but fault-finding and fault
    correction were expensive enough to tip the balance.

    Was the cost of repair throughout the equipment's lifetime taken into account? Faulty crimps, especially if the wires are a bit short, can
    take ages to put right.

    Probably not. The crystal ball that tells you how often a crimp will
    fail over the lifetime of a particular bit of equipment hadn't been been invented back then and I haven't been offered one recently.

    The parts I had in mind were coax connectors, and you can check them
    very quickly with a time domain reflectorometer (and we had a couple of
    them).

    --
    Bill Sloman, Sydney



    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From john larkin@21:1/5 to tauno.voipio@notused.fi.invalid on Sun Feb 16 09:49:45 2025
    On Sun, 16 Feb 2025 19:32:56 +0200, Tauno Voipio <tauno.voipio@notused.fi.invalid> wrote:

    On 16.2.2025 7.11, Bill Sloman wrote:
    On 16/02/2025 3:17 am, john larkin wrote:
    On Sat, 15 Feb 2025 14:13:20 +0000, piglet <erichpwagner@hotmail.com>
    wrote:

    On 15/02/2025 12:20 am, Phil Hobbs wrote:
    piglet <erichpwagner@hotmail.com> wrote:
    john larkin <JL@gct.com> wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a
    module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5 >>>>>>> pins.

    I was planning to use four of them, with two on a baby board, but >>>>>>> that
    idea wasn't popular.



    Phoenix  do make 20 pin version (as two rows of ten) with 10 amp
    per pin on
    200 mil pitch.


    Do they actually make them m, as in somebody has them for sale, or
    are they
    just listed in a catalogue?

    Connector catalogs are full of things that they would love to make
    for you
    if you want to order 100,000 pieces and can wait six months.

    Cheers

    Phil Hobbs


    But JL's customers are aerospace so will be used to exotic, hard to find >>>> connectors - would they respect him for using an easily buyable
    connector :)

    piglet

    The nice thing about the Phoenix connectors is that you don't need a
    soldring iron or pins and crimp tools to terminate wires, just a small
    screwdriver.

    That's not nice. It's just cheap. At Cambridge Instruments the argument
    for going over to crimp connectors was that you found a lot less duff
    connections when you were putting product through final test.

    The parts and tools were more expensive, but fault-finding and fault
    correction were expensive enough to tip the balance.

    <snip>


    Crimps can also be dud, and they can be difficult to find.

    Decades ago, we had a Data Products line printer which occasionally
    went beserk with paper feed, throwing half a box of chain forms at
    speed through the printer. The paper feed was a DC servo built by
    the book, with acceleration and deceleration controls done with suitable >integrators. After a long hunt, it was seen that the occasional insanity
    came from a missing tachogenerator signal. The culprit was one of the
    tacho signal wires crimped partially on top of the insulation.

    I rode a LASH ship from San Francisco to San Pedro, a lovely cruise,
    to try to find out why it would go berzerk now and then. Turns out it
    was an intermittent connection from the speed feedback tach.

    I had designed the control system some years before, and I limited the influence range of the RPM feedback, so the runaways weren't the full
    32,000 horsepower.

    Nowadays we do most control systems in uP or FPGA code, so we can have
    lots of protections.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Tauno Voipio@21:1/5 to Bill Sloman on Sun Feb 16 19:32:56 2025
    On 16.2.2025 7.11, Bill Sloman wrote:
    On 16/02/2025 3:17 am, john larkin wrote:
    On Sat, 15 Feb 2025 14:13:20 +0000, piglet <erichpwagner@hotmail.com>
    wrote:

    On 15/02/2025 12:20 am, Phil Hobbs wrote:
    piglet <erichpwagner@hotmail.com> wrote:
    john larkin <JL@gct.com> wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a
    module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5 >>>>>> pins.

    I was planning to use four of them, with two on a baby board, but
    that
    idea wasn't popular.



    Phoenix  do make 20 pin version (as two rows of ten) with 10 amp
    per pin on
    200 mil pitch.


    Do they actually make them m, as in somebody has them for sale, or
    are they
    just listed in a catalogue?

    Connector catalogs are full of things that they would love to make
    for you
    if you want to order 100,000 pieces and can wait six months.

    Cheers

    Phil Hobbs


    But JL's customers are aerospace so will be used to exotic, hard to find >>> connectors - would they respect him for using an easily buyable
    connector :)

    piglet

    The nice thing about the Phoenix connectors is that you don't need a
    soldring iron or pins and crimp tools to terminate wires, just a small
    screwdriver.

    That's not nice. It's just cheap. At Cambridge Instruments the argument
    for going over to crimp connectors was that you found a lot less duff connections when you were putting product through final test.

    The parts and tools were more expensive, but fault-finding and fault correction were expensive enough to tip the balance.

    <snip>


    Crimps can also be dud, and they can be difficult to find.

    Decades ago, we had a Data Products line printer which occasionally
    went beserk with paper feed, throwing half a box of chain forms at
    speed through the printer. The paper feed was a DC servo built by
    the book, with acceleration and deceleration controls done with suitable integrators. After a long hunt, it was seen that the occasional insanity
    came from a missing tachogenerator signal. The culprit was one of the
    tacho signal wires crimped partially on top of the insulation.

    --

    -TV

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Joe Gwinn@21:1/5 to tauno.voipio@notused.fi.invalid on Sun Feb 16 16:17:13 2025
    On Sun, 16 Feb 2025 19:32:56 +0200, Tauno Voipio <tauno.voipio@notused.fi.invalid> wrote:

    On 16.2.2025 7.11, Bill Sloman wrote:
    On 16/02/2025 3:17 am, john larkin wrote:
    On Sat, 15 Feb 2025 14:13:20 +0000, piglet <erichpwagner@hotmail.com>
    wrote:

    On 15/02/2025 12:20 am, Phil Hobbs wrote:
    piglet <erichpwagner@hotmail.com> wrote:
    john larkin <JL@gct.com> wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a
    module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5 >>>>>>> pins.

    I was planning to use four of them, with two on a baby board, but >>>>>>> that
    idea wasn't popular.



    Phoenix  do make 20 pin version (as two rows of ten) with 10 amp
    per pin on
    200 mil pitch.


    Do they actually make them m, as in somebody has them for sale, or
    are they
    just listed in a catalogue?

    Connector catalogs are full of things that they would love to make
    for you
    if you want to order 100,000 pieces and can wait six months.

    Cheers

    Phil Hobbs


    But JL's customers are aerospace so will be used to exotic, hard to find >>>> connectors - would they respect him for using an easily buyable
    connector :)

    piglet

    The nice thing about the Phoenix connectors is that you don't need a
    soldring iron or pins and crimp tools to terminate wires, just a small
    screwdriver.

    That's not nice. It's just cheap. At Cambridge Instruments the argument
    for going over to crimp connectors was that you found a lot less duff
    connections when you were putting product through final test.

    The parts and tools were more expensive, but fault-finding and fault
    correction were expensive enough to tip the balance.

    <snip>


    Crimps can also be dud, and they can be difficult to find.

    Decades ago, we had a Data Products line printer which occasionally
    went beserk with paper feed, throwing half a box of chain forms at
    speed through the printer. The paper feed was a DC servo built by
    the book, with acceleration and deceleration controls done with suitable >integrators. After a long hunt, it was seen that the occasional insanity
    came from a missing tachogenerator signal. The culprit was one of the
    tacho signal wires crimped partially on top of the insulation.

    I had one of those problems in the 1970s when I lived in Baltimore,
    but it was the pickup wires from the electromagnetic phono cartridge
    on a Dual turntable that caused trouble. Took me a year to figure
    out.

    The phono pickup wires were very small and flexible, and they were
    attached to the cartridge by a pair of spring clips crimped to the
    wires. What they meant by crimped was that they stripped the soft PVC insulation off for 1/8", folded the wire strands back over the
    insulation, and crimped to that. Almost worked.

    But after a few years in the industrial atmosphere of Baltimore (we
    still had a real steel mill!), a little bit of corrosion formed, and
    the wire to ferrule contact became unreliable, and one channel or the
    other would go silent, probably due to mechanical motion as one played
    a record.

    How does one fix this? Replacement parts will all have the same
    problem, and it's too small and delicate to do much, and soldering
    would yield fatigue breaks.

    Welding is the answer! Took the cartridge off so all that's left on
    the turntable is wire and mechanism, and no fragile electronics.
    Connected each wire from clip to phono connector in series with a
    100-watt 120-volt incandescent bulb and connected this to the 120-volt
    power line. The 120-volt 10-amp startup surge punched through the
    corrosion and welded wire to crimp-terminal barrel. The thin wire had
    no problem carrying the 1-amp steady-state current thereafter. Did it
    a few times per wire, just to be sure. Problem solved, never to
    return.

    Joe Gwinn

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Phil Hobbs@21:1/5 to Joe Gwinn on Sun Feb 16 23:42:01 2025
    Joe Gwinn <joegwinn@comcast.net> wrote:
    On Sun, 16 Feb 2025 19:32:56 +0200, Tauno Voipio <tauno.voipio@notused.fi.invalid> wrote:

    On 16.2.2025 7.11, Bill Sloman wrote:
    On 16/02/2025 3:17 am, john larkin wrote:
    On Sat, 15 Feb 2025 14:13:20 +0000, piglet <erichpwagner@hotmail.com>
    wrote:

    On 15/02/2025 12:20 am, Phil Hobbs wrote:
    piglet <erichpwagner@hotmail.com> wrote:
    john larkin <JL@gct.com> wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a >>>>>>>> module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it >>>>>>>> without tooling, and it's easy to mate and unmate. But it's only 5 >>>>>>>> pins.

    I was planning to use four of them, with two on a baby board, but >>>>>>>> that
    idea wasn't popular.



    Phoenixÿ do make 20 pin version (as two rows of ten) with 10 amp >>>>>>> per pin on
    200 mil pitch.


    Do they actually make them m, as in somebody has them for sale, or >>>>>> are they
    just listed in a catalogue?

    Connector catalogs are full of things that they would love to make >>>>>> for you
    if you want to order 100,000 pieces and can wait six months.

    Cheers

    Phil Hobbs


    But JL's customers are aerospace so will be used to exotic, hard to find >>>>> connectors - would they respect him for using an easily buyable
    connector :)

    piglet

    The nice thing about the Phoenix connectors is that you don't need a
    soldring iron or pins and crimp tools to terminate wires, just a small >>>> screwdriver.

    That's not nice. It's just cheap. At Cambridge Instruments the argument
    for going over to crimp connectors was that you found a lot less duff
    connections when you were putting product through final test.

    The parts and tools were more expensive, but fault-finding and fault
    correction were expensive enough to tip the balance.

    <snip>


    Crimps can also be dud, and they can be difficult to find.

    Decades ago, we had a Data Products line printer which occasionally
    went beserk with paper feed, throwing half a box of chain forms at
    speed through the printer. The paper feed was a DC servo built by
    the book, with acceleration and deceleration controls done with suitable
    integrators. After a long hunt, it was seen that the occasional insanity
    came from a missing tachogenerator signal. The culprit was one of the
    tacho signal wires crimped partially on top of the insulation.

    I had one of those problems in the 1970s when I lived in Baltimore,
    but it was the pickup wires from the electromagnetic phono cartridge
    on a Dual turntable that caused trouble. Took me a year to figure
    out.

    The phono pickup wires were very small and flexible, and they were
    attached to the cartridge by a pair of spring clips crimped to the
    wires. What they meant by crimped was that they stripped the soft PVC insulation off for 1/8", folded the wire strands back over the
    insulation, and crimped to that. Almost worked.

    But after a few years in the industrial atmosphere of Baltimore (we
    still had a real steel mill!), a little bit of corrosion formed, and
    the wire to ferrule contact became unreliable, and one channel or the
    other would go silent, probably due to mechanical motion as one played
    a record.

    How does one fix this? Replacement parts will all have the same
    problem, and it's too small and delicate to do much, and soldering
    would yield fatigue breaks.

    Welding is the answer! Took the cartridge off so all that's left on
    the turntable is wire and mechanism, and no fragile electronics.
    Connected each wire from clip to phono connector in series with a
    100-watt 120-volt incandescent bulb and connected this to the 120-volt
    power line. The 120-volt 10-amp startup surge punched through the
    corrosion and welded wire to crimp-terminal barrel. The thin wire had
    no problem carrying the 1-amp steady-state current thereafter. Did it
    a few times per wire, just to be sure. Problem solved, never to
    return.

    Joe Gwinn


    Fun!

    Cheers

    Phil Hobbs

    --
    Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Buzz McCool@21:1/5 to john larkin on Tue Feb 18 16:14:03 2025
    On 2/14/2025 8:37 AM, john larkin wrote:
    Does anyone have a favorite high-current PCB connector?

    I've used Positronic connectors with success. https://www.connectpositronic.com/en/connectors/#category

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jasen Betts@21:1/5 to john larkin on Fri Feb 21 05:07:15 2025
    On 2025-02-14, john larkin <JL@gct.com> wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that
    idea wasn't popular.

    phoenix (and a bunch of other manufacturers) do connectors with tighter
    pitch (eg 3.81mm or 3.5mm) and multiple rows of contacts.
    apparently good for 8A per pin.

    --
    Jasen.
    🇺🇦 Слава Україні

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Lasse Langwadt@21:1/5 to john larkin on Sun Feb 23 14:02:30 2025
    On 2/14/25 17:37, john larkin wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that
    idea wasn't popular.


    https://www.mouser.ca/ProductDetail/Phoenix-Contact/1842979?qs=aYsvlkyO7qM1vWO95kklEQ%3D%3D

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From john larkin@21:1/5 to All on Sun Feb 23 07:45:54 2025
    On Sun, 23 Feb 2025 14:02:30 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/14/25 17:37, john larkin wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that
    idea wasn't popular.


    https://www.mouser.ca/ProductDetail/Phoenix-Contact/1842979?qs=aYsvlkyO7qM1vWO95kklEQ%3D%3D

    The problem with those connectorfs, and the Weidmuller equivalents, is
    that humans aren't strong enough to un-mate them. And the spring-push
    wire clamps are flakey. And that they have no no opinions about pin
    numbering.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Lasse Langwadt@21:1/5 to john larkin on Sun Feb 23 20:03:46 2025
    On 2/23/25 16:45, john larkin wrote:
    On Sun, 23 Feb 2025 14:02:30 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/14/25 17:37, john larkin wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module
    like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that
    idea wasn't popular.


    https://www.mouser.ca/ProductDetail/Phoenix-Contact/1842979?qs=aYsvlkyO7qM1vWO95kklEQ%3D%3D

    The problem with those connectorfs, and the Weidmuller equivalents, is
    that humans aren't strong enough to un-mate them. And the spring-push
    wire clamps are flakey. And that they have no no opinions about pin numbering.


    We've used a lot of those plugable connectors, never seemed like a
    problem to unmate them

    doesn't have to be spring clamps, https://www.digikey.dk/da/products/detail/phoenix-contact/1803633/260535

    if there no number you decide what to call the pins

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From john larkin@21:1/5 to All on Sun Feb 23 11:25:16 2025
    On Sun, 23 Feb 2025 20:03:46 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/23/25 16:45, john larkin wrote:
    On Sun, 23 Feb 2025 14:02:30 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/14/25 17:37, john larkin wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module >>>> like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that >>>> idea wasn't popular.


    https://www.mouser.ca/ProductDetail/Phoenix-Contact/1842979?qs=aYsvlkyO7qM1vWO95kklEQ%3D%3D

    The problem with those connectorfs, and the Weidmuller equivalents, is
    that humans aren't strong enough to un-mate them. And the spring-push
    wire clamps are flakey. And that they have no no opinions about pin
    numbering.


    We've used a lot of those plugable connectors, never seemed like a
    problem to unmate them

    We used a similar part, and it was very hard to un-mate. We use the
    version with the cam now, but only a few of their connectors have the
    un-mate cam.

    https://www.digikey.com/en/products/detail/phoenix-contact/1808912/3439844


    doesn't have to be spring clamps, >https://www.digikey.dk/da/products/detail/phoenix-contact/1803633/260535

    if there no number you decide what to call the pins

    And since the connectors are unmarked, we have to explain the pin
    numbering to our customers, with pictures in manuals.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Lasse Langwadt@21:1/5 to john larkin on Sun Feb 23 21:00:21 2025
    On 2/23/25 20:25, john larkin wrote:
    On Sun, 23 Feb 2025 20:03:46 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/23/25 16:45, john larkin wrote:
    On Sun, 23 Feb 2025 14:02:30 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/14/25 17:37, john larkin wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module >>>>> like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that >>>>> idea wasn't popular.


    https://www.mouser.ca/ProductDetail/Phoenix-Contact/1842979?qs=aYsvlkyO7qM1vWO95kklEQ%3D%3D

    The problem with those connectorfs, and the Weidmuller equivalents, is
    that humans aren't strong enough to un-mate them. And the spring-push
    wire clamps are flakey. And that they have no no opinions about pin
    numbering.


    We've used a lot of those plugable connectors, never seemed like a
    problem to unmate them

    We used a similar part, and it was very hard to un-mate. We use the
    version with the cam now, but only a few of their connectors have the
    un-mate cam.

    https://www.digikey.com/en/products/detail/phoenix-contact/1808912/3439844


    doesn't have to be spring clamps,
    https://www.digikey.dk/da/products/detail/phoenix-contact/1803633/260535

    if there no number you decide what to call the pins

    And since the connectors are unmarked, we have to explain the pin
    numbering to our customers, with pictures in manuals.


    if it had numbers you'd still need to explain what goes to what number,
    or just have the names/numbers on the box next to each pin

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From john larkin@21:1/5 to All on Sun Feb 23 12:09:12 2025
    On Sun, 23 Feb 2025 21:00:21 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/23/25 20:25, john larkin wrote:
    On Sun, 23 Feb 2025 20:03:46 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/23/25 16:45, john larkin wrote:
    On Sun, 23 Feb 2025 14:02:30 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/14/25 17:37, john larkin wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module >>>>>> like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5 >>>>>> pins.

    I was planning to use four of them, with two on a baby board, but that >>>>>> idea wasn't popular.


    https://www.mouser.ca/ProductDetail/Phoenix-Contact/1842979?qs=aYsvlkyO7qM1vWO95kklEQ%3D%3D

    The problem with those connectorfs, and the Weidmuller equivalents, is >>>> that humans aren't strong enough to un-mate them. And the spring-push
    wire clamps are flakey. And that they have no no opinions about pin
    numbering.


    We've used a lot of those plugable connectors, never seemed like a
    problem to unmate them

    We used a similar part, and it was very hard to un-mate. We use the
    version with the cam now, but only a few of their connectors have the
    un-mate cam.

    https://www.digikey.com/en/products/detail/phoenix-contact/1808912/3439844 >>

    doesn't have to be spring clamps,
    https://www.digikey.dk/da/products/detail/phoenix-contact/1803633/260535 >>>
    if there no number you decide what to call the pins

    And since the connectors are unmarked, we have to explain the pin
    numbering to our customers, with pictures in manuals.


    if it had numbers you'd still need to explain what goes to what number,
    or just have the names/numbers on the box next to each pin



    Imagine if D25 or USB connectors had random pin numbers on various
    products.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From =?UTF-8?B?Q2FybCBJamFtZXM=?=@21:1/5 to All on Sun Feb 23 20:33:07 2025
    On Sun Feb 23 11:25:16 2025 john larkin wrote:
    On Sun, 23 Feb 2025 20:03:46 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/23/25 16:45, john larkin wrote:
    On Sun, 23 Feb 2025 14:02:30 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/14/25 17:37, john larkin wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module >>>> like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that >>>> idea wasn't popular.


    https://www.mouser.ca/ProductDetail/Phoenix-Contact/1842979?qs=aYsvlkyO7qM1vWO95kklEQ%3D%3D

    The problem with those connectorfs, and the Weidmuller equivalents, is
    that humans aren't strong enough to un-mate them. And the spring-push
    wire clamps are flakey. And that they have no no opinions about pin
    numbering.


    We've used a lot of those plugable connectors, never seemed like a
    problem to unmate them

    We used a similar part, and it was very hard to un-mate. We use the
    version with the cam now, but only a few of their connectors have the
    un-mate cam.

    https://www.digikey.com/en/products/detail/phoenix-contact/1808912/3439844


    doesn't have to be spring clamps, >https://www.digikey.dk/da/products/detail/phoenix-contact/1803633/260535

    if there no number you decide what to call the pins

    And since the connectors are unmarked, we have to explain the pin
    numbering to our customers, with pictures in manuals.



    Used maybe 2-4,000/year of those at my last job. Our standard was to hold the cable so the wires were vertical and the screws that held the wires were towards you, like you were about to plug it in on a vertical pcb (as ours were). Leftmost pin is #1.
    Oh, you can put bare stranded wire in them but it's much more reliable to crimp a ferrule on each wire first. That way on high current wires (cabinet power was 10-13A on 12 ga stranded) you don't miss strands, and with tiny wires (some sensor leads were
    up to 22 ga) the wire doesn't slip to the side of the jaw on the end of the screw as you tighten it, ready to squeeze out a month after you ship it. Did a bit of shopping around and settled on ferrulesdirect.com, was always happy with their products.

    Regards,
    Carl

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From john larkin@21:1/5 to carl.ijamesXX@verizon.netYY on Mon Feb 24 11:26:14 2025
    On Sun, 23 Feb 2025 20:33:07 GMT, Carl Ijames
    <carl.ijamesXX@verizon.netYY> wrote:

    On Sun Feb 23 11:25:16 2025 john larkin wrote:
    On Sun, 23 Feb 2025 20:03:46 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/23/25 16:45, john larkin wrote:
    On Sun, 23 Feb 2025 14:02:30 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/14/25 17:37, john larkin wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module >> >>>> like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5
    pins.

    I was planning to use four of them, with two on a baby board, but that >> >>>> idea wasn't popular.


    https://www.mouser.ca/ProductDetail/Phoenix-Contact/1842979?qs=aYsvlkyO7qM1vWO95kklEQ%3D%3D

    The problem with those connectorfs, and the Weidmuller equivalents, is
    that humans aren't strong enough to un-mate them. And the spring-push
    wire clamps are flakey. And that they have no no opinions about pin
    numbering.


    We've used a lot of those plugable connectors, never seemed like a
    problem to unmate them

    We used a similar part, and it was very hard to un-mate. We use the
    version with the cam now, but only a few of their connectors have the
    un-mate cam.

    https://www.digikey.com/en/products/detail/phoenix-contact/1808912/3439844 >>

    doesn't have to be spring clamps,
    https://www.digikey.dk/da/products/detail/phoenix-contact/1803633/260535

    if there no number you decide what to call the pins

    And since the connectors are unmarked, we have to explain the pin
    numbering to our customers, with pictures in manuals.



    Used maybe 2-4,000/year of those at my last job. Our standard was to hold the cable so the wires were vertical and the screws that held the wires were towards you, like you were about to plug it in on a vertical pcb (as ours were). Leftmost pin is #1.
    Oh, you can put bare stranded wire in them but it's much more reliable to crimp a ferrule on each wire first. That way on high current wires (cabinet power was 10-13A on 12 ga stranded) you don't miss strands, and with tiny wires (some sensor leads
    were up to 22 ga) the wire doesn't slip to the side of the jaw on the end of the screw as you tighten it, ready to squeeze out a month after you ship it. Did a bit of shopping around and settled on ferrulesdirect.com, was always happy with their
    products.

    Regards,
    Carl

    If we have to crimp, we may as well use a Molex connector, which has
    pin numbers moulded in.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Lasse Langwadt@21:1/5 to john larkin on Wed Feb 26 01:23:53 2025
    On 2/23/25 21:09, john larkin wrote:
    On Sun, 23 Feb 2025 21:00:21 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/23/25 20:25, john larkin wrote:
    On Sun, 23 Feb 2025 20:03:46 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/23/25 16:45, john larkin wrote:
    On Sun, 23 Feb 2025 14:02:30 +0100, Lasse Langwadt <llc@fonz.dk>
    wrote:

    On 2/14/25 17:37, john larkin wrote:
    Does anyone have a favorite high-current PCB connector?

    I'd like to get 20 wires into a pluggable connector, to go on a module >>>>>>> like this:

    https://highlandtechnology.com/Product/P948

    We need at least 7 amps per contact.

    That litle green Phoenix connector is cool. Wires screw into it
    without tooling, and it's easy to mate and unmate. But it's only 5 >>>>>>> pins.

    I was planning to use four of them, with two on a baby board, but that >>>>>>> idea wasn't popular.


    https://www.mouser.ca/ProductDetail/Phoenix-Contact/1842979?qs=aYsvlkyO7qM1vWO95kklEQ%3D%3D

    The problem with those connectorfs, and the Weidmuller equivalents, is >>>>> that humans aren't strong enough to un-mate them. And the spring-push >>>>> wire clamps are flakey. And that they have no no opinions about pin
    numbering.


    We've used a lot of those plugable connectors, never seemed like a
    problem to unmate them

    We used a similar part, and it was very hard to un-mate. We use the
    version with the cam now, but only a few of their connectors have the
    un-mate cam.

    https://www.digikey.com/en/products/detail/phoenix-contact/1808912/3439844 >>>

    doesn't have to be spring clamps,
    https://www.digikey.dk/da/products/detail/phoenix-contact/1803633/260535 >>>>
    if there no number you decide what to call the pins

    And since the connectors are unmarked, we have to explain the pin
    numbering to our customers, with pictures in manuals.


    if it had numbers you'd still need to explain what goes to what number,
    or just have the names/numbers on the box next to each pin



    Imagine if D25 or USB connectors had random pin numbers on various
    products.


    might as well have names instead of numbers, DB25 is used for all kinds
    of things, the numbers doesn't tell you anything

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