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millwood 10th June 2003 10:02 PM

sources for caps / resistors / connectors / insulation pads and heatsinks?
Hi, there,

I have found pretty much all the transistors / diodes I need but am at a loss as to where to get resistors / caps / connectors or insulation pads / heatsinks?

I tried digikey but they don't have a good selection of pads / heatsinks and the rest is quite expesnive buying individually from them.

Where do you get yours?

sam9 10th June 2003 10:18 PM

I thought the Bergquist page in the digikey catalog was more than sufficient.

If for heatsinks you mean for output transistors, the only really cheap means is surplus items on e-bay or a local surplus store if you have one or kluge your own from scrap metal. For something like the ESP P3A, I've "made do" by taking a piece of aluminum bar stock and bolting on a mess of old CPU heatsinks. Ugly in the extreme but effective.

If you want pretty heat sinks or somethinh really substantial, the best source for the hobbiest may be M&M Metals (, I think). Minimum order is $100, so you may want to think ahead to future projects and buy in advance.

Mattyo5 11th June 2003 12:42 AM

Try this for heatsinks...those are probably the hardest part of doing an amp...sourcing all the parts. You can get a lot of stuff from digikey,, and a local scrap metal place. Ask around locally, there are always scrap metal places around. Later!

-Matthew K. Olson

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