[sdiy] big Tempco order... interested ?

[Oren Leavitt]

That's for the nominal resistance.
They'll all measure 1K within 1% with all units at exactly 25 degrees C.
Tempco variance is typically more.

Bear in mind that the 3500ppm spec is given for the 'hot' end of the 
scale at 100 degrees C. They will be closer to 3400ppm at 25 degrees C.
Some info here on the PT146:
http://www.precisionresistor.com/COMPTXT.HTM

Oren

Senso wrote:
>> "We are pleased to quote as follows:
>>
>> PT146 1K ohm 1%
>>          @25 C
>>          TC 3500 ppm
>> 100 pcs.@$2.40 ea.
>> 500 pcs.@$2.00 ea.
>> 1000 pcs.@$1.79 ea.
>>
>> PT146 1K ohm 1%
>>         @25 C
>>         TC 3300 ppm
>> 100 pcs.@$3.50 ea.
>> 500 pcs.@$3.10 ea.
>> 1000 pcs.@$2.57 ea."
>>
>> So they can do customs for a buck more each. I just wonder if their 
>> 3500ppm
>> ends up being in the range of 3300, what their "real" 3300 does...
> 
> 
> 
> Yeah, still a bit worried about what that 1% claim is supposed to mean 
> then. 1 out of a 100 not functioning?
> 
> But now that there's a tempco interest generated here anyway... anybody 
> else that would like to share an order of 1.87K 1W 3% ones? Or knows a 
> place that can supply from stock?
> 
> Senso
> 
> 
> 
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