[tinwhiskers] Re: Exemption on high temperature lead solder

  • From: "Parnagian, Ed" <ed.parnagian@xxxxxxxxxxx>
  • To: "tinwhiskers@xxxxxxxxxxxxx" <tinwhiskers@xxxxxxxxxxxxx>
  • Date: Tue, 26 Aug 2008 15:03:58 +0200

Hi, Bert!

Yes, it seems inconsistent with the stated objectives of RoHS, but it is a good 
example of what pushing back with data can achieve.

These high lead-content solders all have very high melting points.  They are 
used by device manufacturers to make internal interconnects in devices that 
have very high power densities.

Best regards,
Ed

-----Original Message-----
From: tinwhiskers-bounce@xxxxxxxxxxxxx 
[mailto:tinwhiskers-bounce@xxxxxxxxxxxxx] On Behalf Of Mason, Bert
Sent: 2008 Aug 26 8:32 AM
To: tinwhiskers@xxxxxxxxxxxxx
Subject: [tinwhiskers] Re: Exemption on high temperature lead solder

Abandon all rationality Ye who enter the world of RoHS and the EU.
Welcome to our world

Best Regards,

Bert Mason
Quality Engineer

Formation Inc.
Building 1
121 Whittendale Dr.
Moorestown, NJ 08057
Phone: 856-380-2956
Fax: 856-234-5242



-----Original Message-----
From: tinwhiskers-bounce@xxxxxxxxxxxxx
[mailto:tinwhiskers-bounce@xxxxxxxxxxxxx]On Behalf Of Niki Steenkamp
Sent: Tuesday, August 26, 2008 8:24 AM
To: tinwhiskers@xxxxxxxxxxxxx
Subject: [tinwhiskers] Exemption on high temperature lead solder


Hi,

I have been looking over some of the official RoHS documents and have seen
that there is an exemption on high temperature lead solder (more than 85%
lead).  Not having done any more research on the subject I was wondering:
* Why the exemption exists?
* Why not use more than 85% lead to circumvent the pure tin problem?  Maybe
the temperature is unacceptably high?

I also noticed that mercury is limited but not banned in fluorescent lights.
Just thinking of the millions of fluorescent lights being dumped in landfills
each year I cannot see how this can be viewed as acceptable while ALL lead
had to be removed from electronics.  Furthermore, lead in batteries are
exempt.  There is probably more lead in my car battery than in a thousand PC
motherboards and how many of these batteries end up in landfills each year?
Just seems strangely warped...

Regards,
Niki




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