[sdiy] parts watch

[Ian Fritz]

Hi Tim --

Holy cow, how did we all miss that!

Yes, +3350 is what you need to exactly compensate a converter.  With the 
10% TC tolerance you will get at most about 250 ppm/K scale drift.  This is 
good enough for most people, although a number of crazy folks like me are 
trying to get below 100 ppm/K.

I would recommend the higher wattage (0805 profile) to minimize any 
possible self-heating effects.

You could also get the 3900 ppm/K devices and trim the tempco to the exact 
value with a series non-tempco resistor.

The only problem people might have is that the minimum order is listed as 
10 pieces.

Many thanks, Mr. Sharp-Eyes!

   Ian


At 12:05 PM 4/28/2003, Tim Ressel wrote:
>Yo,
>
>I just noticed in the new Digikey catalog some
>Panasonic temco resistors. Sadly they are only
>positive temco, but they have +3300PPM resistors. Are
>these useable somehow???
>
>Catalog T032 Page 758
>
>--Tim
>
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