[sdiy] Tempco Resistors...

[jays at aracnet.com]

Hello All!

FYI...

I grabbed the data sheet for the Panasonic SMT parts that digikey sells a while back and gave it a read. One thing that they mentioned is that these parts are delicate. The outside coating forms part of the 'thermal operating properties'. If it gets scratched or damaged in any way the resistor will not operate properly. They talked about how tweezers could scratch the parts and they would not work right. So be careful.

Jay S.

Metrophage wrote:

> I have been thinking of putting together an order with KRL Bantry for
> some 3300ppm 1k, but I'll need to talk with them, as its been years
> since I've bought any. They hand make tempcos to any resistance, any
> temperature coefficient, lots of tolerances. If I am not mistaken, they
> were like $3-$4 each @100pcs. Not the cheapest option going, but
> probably the best. Most others are offering 3000 or 3500 ppm, and the
> SMT versions are more difficult when it comes to thermal contact, IMO.
> The KRL tempcos are probably at least as good as the legendary Q81. 
> 
> Maybe group purchase time?
> 
> CJ