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mchambin 21st September 2019 01:22 PM

Resistor tempco
 
What resistor types and brands have low temperature coefficient.
Not looking for ultimate expensive stuff.
Just good dependable low tempco.

RickTH 21st September 2019 03:10 PM

Easy :
Resistors | Mouser
You can select which ppm/C you want and select after that on price.

nezbleu 21st September 2019 03:38 PM

Bulk foil have very low tempco but tend to the "ultimate expensive" category. Some wirewound types are available with very low tempco. For the money I think it's hard to beat Vishay PTF metal film series, though they are physically large for their power rating, and may not be available in as many values as others.

Damon Hill 21st September 2019 10:31 PM

A rule of thumb is that higher tolerance means lower temperature coefficient. You'll be hard-pressed to find anything lower than .01% tolerance, .005% seems to be a lowest limit and is usually a bulk foil resistor. Vishay's Z-foil resistors are the most stable of all, but command a premium price.

PTF is a very good alternate.

Mark Tillotson 23rd September 2019 05:50 PM

Quote:

Originally Posted by mchambin (https://www.diyaudio.com/forums/parts/342987-resistor-tempco-post5921173.html#post5921173)
What resistor types and brands have low temperature coefficient.
Not looking for ultimate expensive stuff.
Just good dependable low tempco.


You've not given any indication of how low a tempco you are looking for, "good dependable low" isn't very meaningful. 100ppm/C ? 10ppm/C? what?


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