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December 2009

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Subject:
From:
Guy Ramsey <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Guy Ramsey <[log in to unmask]>
Date:
Thu, 10 Dec 2009 19:55:24 -0500
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Remember that tank we had at ACI that was did electrochemical reduction. It was a Rockwell invention I think, ROSA? It could restore solderability to some metals. I don't know how it would get through the HASL. 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Lee Whiteman
Sent: Thursday, December 10, 2009 1:54 PM
To: [log in to unmask]
Subject: [TN] BOARD SOLDERABILITY

One of my colleagues has a HASL finished board, that sat in our stockroom for ~ 10 years, and of course he want to use them (EOY Billing).

Ran the board through wave soldering, and it did not solder at all. Good news was that the board was not damaged by the heat - it just was not solderable. I do not want to use a more active flux since it will be difficult to clean.

Are there any solutions / processes that can restore board solderability?

Thanks in advance.

Lee Whiteman, PMP
Senior Member Engineering Staff
L-3 Communications East
Telephone: (856) 338-3508
FAX: (856) 338-2906
E-Mail: [log in to unmask]

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