52
On 06/01/2025 23:00, rob wrote:
I bought some 10K thermistors from ebay recently, and the wires on them
are very thin and fragile.
I see that there are different ones like Thermistor MF52-103 and MF52A
3950K.
I've googled these types but can't find out what the difference is. Specifically, I want some with thicker wires on them, but don't know which ones have that.
Those two numbers are indicating different parts of the specification
The "103" indicates that it resistance is 10K ohms @ 25C
The "3950k" indicates the characteristic curve of resistance vs
temperature. The thermistor is non-linear (12.5C is not 5K ohms and 50C
is not 20K ohms for a thermistor with a specification of 10K ohms @ 25C)
The A after the MF52 may indicate wire size but it may be manufacturer dependant
Your best bet is to find the data sheet for the manufacturer of the
device which should give you full data including mechanical drawings
This shows typical wire sizes for these devices from one manufacturer
https://www.digikey.com.mx/htmldatasheets/production/1856579/0/0/1/mf52a1103f3380.pdf
BUT
MF52 "A" indicates a thin wire of 0.3mm diameter from the manufacturer.
The above data sheet indicates that of all the package variations for
the MF52 they supply the largest lead wire is 0.5mm
Perhaps search for MF52F which may bring up this configuration
https://www.ntcshiheng.com/mf52f-temperature-measuring-ntc-thermistor
Possibly better to search on CPC for "thermistor 10K" which will bring up
https://cpc.farnell.com/vishay/2322-640-63103/thermistor-ntc-10k-5/dp/SN35070?st=thermistor%2010k
with linked data sheet
https://www.farnell.com/datasheets/2630944.pdf
Lead diameter 0.6mm
Other thermistors on CPC that may be suitable
Also check Rapid Electronics
https://www.rapidonline.com/
They do a range of thermistors and link the data sheets. A quick check
on some of their thermistors show leads of 0.5mm diameter.
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