I would go with that on environmental and safety grounds.
I will be meeting with Senators next week to try to get the wording changed
in AB2202 California to get lead in solders exempted on the grounds of
environmental concern.
This is a nice link -
http://www.wohler.com/rohsweee.html
Do you think he doesn't believe RoHS had enough research?
John
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Jeffrey Bush
Sent: Friday, May 26, 2006 9:49 AM
To: [log in to unmask]
Subject: Re: [TN] Rohs Weeeeeee board material
How about a law that says no lead-free assemblies are allowed in the USA
after June 30 2006.
Jeffrey Bush
Director, Quality Assurance and Technical Support
VERMONT CIRCUITS INCORPORATED
76 Technology Drive - POB 1890
Brattleboro, Vermont 05302
Voice - 802.257.4571 ext 21
Fax - 802.257.0011
<http://www.vtcircuits.com/>
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Happy Holden
Sent: Friday, May 26, 2006 12:33 PM
To: [log in to unmask]
Subject: Re: [TN] Rohs Weeeeeee board material
Hi,
That's why we tell all our clients now to adjust their board blueprint
MFG
NOTES with the following additional statements:
1. That the finished multilayer must withstand (A)The LF assembly
process
description including a. Peak Temp b. Time at Peak Temp c Total
time above 250C on heating and cooling d. Number of Cycles of
a.+b.+c.
and (B) If repair and rework is going to be performed and what
those
Time & Temp will be.
2. That the finished multilayer must withstand 3 cycles of a 288C-10
sec.
solder-dip without delamination or hole cracking, measures and checked
in
(a) Ground-plane area AND (b) In the BGA area before the
board
is shipped.
Happy Holden
Asian Pacific Materials
"Stadem, Richard D." <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
05/26/2006 11:56 AM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to
"Stadem, Richard D." <[log in to unmask]>
To
[log in to unmask]
cc
Subject
Re: [TN] Rohs Weeeeeee board material
That is the purpose of a thorough process/procedures audit done
periodically to ensure the material received is going to be good.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Tempea, Ioan
Sent: Friday, May 26, 2006 10:50 AM
To: [log in to unmask]
Subject: Re: [TN] Rohs Weeeeeee board material
Hi,
I guess we have a good idea now of the difficulties in specifying and
manufacturing lead-free capable PCBs. The next question that comes to my
mind is how are we going to assess if the PCBs that are well speced are
what we expect?
I mean, the spec can be OK, whether perfect IPC-4010 slash sheets are
developed, or STII is implanted. But the manufacturer might still use
expired prepregs, they can have lamination problems, and so on.
What tests shall a contract manufacturer or OEM with no in-house testing
capability impose, in order to have the confidence that they receive
what they specified?
Thanks,
Ioan
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