[sdiy] smt 3300ppm resistors

[Bruce Duncan]

At 05:05 PM 3/20/2008, you wrote:
>Bruce Duncan wrote:
>
>>The easiest and most reliable method I have found for VCOs is to 
>>use a dual SMT transistor
>>DMMT3904W and a 1.8K 0805 3300ppm resisitor in the feedback loop of 
>>the coarse tune summing opamp.
>>( I would use 2K if they were available but Digikey only stocks 1.8K)
>>The Dual 3904s seem to be quite well matched and the low mass of 
>>both the transistors and 0805 T. resistor
>
>I took a look at the data sheet, and it turns out this is a 
>Panasonic not Digikey issue, for 3300ppm parts the highest 
>resistance available is 1.8K.
>
>http://www.panasonic.com/industrial/components/pdf/AOF0000CE1.pdf
>
>When this discussion started I saw KOA has a family of similar parts 
>that includes a 2K 3300ppm 0805. I haven't looked for availability.
>
>http://www.koaproducts.com/english/catalogue/lp73.htm
>
>-Dave
>
Mouser are the only KOA distributors I know of ( I use a lot of their Rs)
and I don't see any of the LP73 line in there catalogue.

Bruce