Ebay Heartbreak (was: ebay shenanigans)

From: William Donzelli <aw288_at_osfn.org>
Date: Wed Apr 21 12:04:20 2004

> What is the price of Gold, Palladium, Copper, Iron, etc.

Very tough question, as it become very involved. Also, the markets can
fluctuate so much - steel worth several cents a pound today was near
worthless six months back. Tantalum also swings greatly.

> Where is each found in circuitry?

Gold is found all over the place. Obvious places are on gold chips
(duh!), edge fingers, connectors, and switches. Hidden gold is found in
the some circuit boards (under the ink and solder), inside crystals and
diodes, older style metal transistors, and even in many rather boring
looking chips.

Palladium and Rhoduim are found in Relays and a lot of IBM things.

Copper is everywhere - boards, coils, transformers, relays, motors, etc.

Silver is actually not much of an issue. A lot of wire wrap wire is silver
plated, but the scrappers really don't like this stuff - too little silver
to deal with, and it contaminates the copper. Even silver plated cavities
are a pain - the brass is worth more than the silver.

Tantalum is found in capacitors and in some tubes.

> What is the weight per square inch (pads), etc.

I always thought this was handy:

http://www.mrsscrap.com/scrapvalue.html

William Donzelli
aw288_at_osfn.org
Received on Wed Apr 21 2004 - 12:04:20 BST

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