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Temperature Coefficient for Metal Film Resistors

Temperature Coefficient for Metal Film Resistors

Temperature Coefficient for Metal Film Resistors

(OP)
The Temperature Coefficient for Metal Film Resistors defined by manufacturers as +/- ppm.
What is the reason for such definition (what is the physical process for decreasing resistance with increasing temperature)?

RE: Temperature Coefficient for Metal Film Resistors

Podri,
 I guess I never paid much attention to MF but should not the resistance go down with a decrease in temp?

RE: Temperature Coefficient for Metal Film Resistors

There are two thermal effects: 1.) the spec. R of the metall
is increasing with T. 2.) The thermal expansion of the substate.

<nbucska@pcperipherals.com>

RE: Temperature Coefficient for Metal Film Resistors

Thanks for the link. Never knew that about MF resistors.

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