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May 2004

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Subject:
Re: LF PWB finish
From:
"William E. Hunt" <[log in to unmask]>
Reply To:
(Leadfree Electronics Assembly Forum)
Date:
Wed, 5 May 2004 07:23:20 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (67 lines) 
Keith,

My understanding is that LF HASL is not compatible with XPC laminate. The
LF HASL process damages the XPC?? Is this incorrect?

Bill



Bill Hunt
OTUC Engineering
Eastman Kodak
Office: 585-726-4892
Fax: 585-726-3278




[log in to unmask]
Sent by: Leadfree <[log in to unmask]>
05/05/2004 01:33 AM
Please respond to "(Leadfree Electronics Assembly Forum)"; Please respond
to KSweatman


        To:     [log in to unmask]
        cc:
        Subject:        Re: [LF] LF PWB finish


Bill,

What about HASL with a lead-free solder?

This process has been running successfully at a number of PCB shops in
Europe
for more than a year now.   The demand for lead-free boards is still
fairly
limited but the indications are that lead-free HASL is a viable process
that
delivers a finish that is as good as tin-lead HASL in terms of appearance,
coplanarity and solderable shelf life.

Keith Sweatman
Nihon Superior Co., Ltd

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