Lead-Free Solder - friend or foe?
In 2005, the U.S. Environmental Protection Agency published a report
(pdf), in which it assessed the environmental impact of tin-lead vs lead-free solder.
In July 2006, RoHS
legislation banned the use of lead in electronic products destined for sale throughout Europe with a few exceptions.
But not everyone thinks this was a good idea
- Lead-free assembly is not better for the environment, it is worse. The additional tin mining required to produce high-purity tin alloys, plus the mining of other precious metals required to alloy with tin in substitution for lead is a poor trade for the use of existing lead, much of which comes from recycled products.
Lead-free assembly is less reliable than lead-based assembly. The E.U. environmental commission admits this point. That's why they grant exceptions for military and high-reliability applications that still use SnPb solder.
While lead may pose a greater
public health problem than SAC solder (Tin–silver–copper), the latter uses noticeably more energy to produce than lead–tin solder. Tin Whiskers
have also been identified as the cause of many military, health, industrial and satellite failures
posted by Lanark
on May 8, 2014 -
"Good afternoon, I attached this camera to the bench so you could take pictures. Seriously. So have fun. I'll be back later this evening to pick it up. Love, Jay / The Plug". Stranger Photos Have Happened
posted by nthdegx
on Mar 21, 2008 -
The current issue of PC Magazine includes a very big puff piece on Internet mail praising the virtues of Microsoft Outlook and Outlook Express. Their review of e-mail clients is relatively uninteresting except for the
sidebar on Disposable E-mail Addresses
(DEAs). This is basically the old pseudoanonymous remailer under a different name. Among the free services sneakemail
is the most basic but spamgourmet
has the coolest attitude and allows you to make new addresses on the fly.
Q. How does spamgourmet stop spam?
A. Simple. We delete all of our users' email.
For commercial services there is also spamex
posted by KirkJobSluder
on Apr 24, 2002 -