Quote:
Originally Posted by
SilverCaps
Hi. If you have some old circuit boards lying around, perhaps you have noticed small metal cylinder shaped capacitors on some of them. You may have assumed that they were aluminum or steel. Some of them are. But some have SOLID silver casings on them, with a small tantalum slug inside. Anything that contains solid silver is worth collecting. Now, perhaps you might help me out of a bit of difficulty here. I was injured on the job in 2002 and currently live on a modest social security disability benefit. If you and any friends who may have some of these silver caps would be willing to send me a small batch of them, I hope to be able to catch up a little bit on some crippling debt. Also, if you have the knowledge of how to make this appeal go "viral", would you be willing to help me with this? Write to my email.
wet tantalum capacitors contain sulphuric acid
i did some quick research on these solid silver capacitors:
"The very first tantalum capacitors used the same etched foil principle as the aluminium electrolytic. However, they differed in their choice of electrolyte. Believe it or not, wet tantalum capacitors contain sulphuric acid! In order to contain this corrosive material, wet tantalum capacitors use a solid silver case to contain the wound foil, and the connections are made through glass-to-metal seals."
rest of article at this link
Elecsound-The Trust Name In Electronic Components » Blog Archiv » Tantalum Electrolytic Capacitors
"Tantalum is a superior material for capacitor construction due to the fact that tantalum capacitors tend to outlive their aluminum counterparts and have been in use since the 1950s. Some tantalum capacitors use a liquid electrolyte, which means the user should never break one open for safety reasons; one of the common electrolytes contained within these capacitors is sulfuric acid."
rest of article at this link
Specifications for Scrap Tantalum Capacitors | eHow.com
just a heads-up
work safe