Still laughing.......................Rudy ............"left of the Hawaiian
Islands"!!!!

Now that is funny.

John

------------------------------------
Avanex
John Burke
Senior Manager RoHS Compliance
[log in to unmask]
40919 Encyclopedia Circle
Fremont
CA 94538
tel: 510 897 4250
fax: 510 979 0189
mobile: 510 676 6312
------------------------------------


-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of R Sedlak
Sent: Wednesday, August 17, 2005 2:05 PM
To: [log in to unmask]
Subject: Re: [TN] HASL over nickel


Cheryl Johnson's question is right on the money..

But, FYI, Electroless Nickel is quite easily strippable, IF.... the
soldermask is US made and applied.. A number of us suppliers sell the
chemistry to do that...

But, we sell a product used to clean up boards (clean, not strip) which
gives no problems on US made boards, but rips the mask off of many/most
boards made to the left of the Hawaiian Islands.  Based on this data, I
would be weary of trying to strip Nickel from these same boards.

Rudy Sedlak.
RD Chemical Company

Tom Moore <[log in to unmask]> wrote:
Our PC board supplier inadvertently supplied us with boards composed of
gold over nickel rather than the specified HASL finish. While we kept some
of the boards to keep our production line running, we sent the rest back to
have the gold stripped off and run through the HASl process. Now our
supplier is telling us that they will not be able to remove the nickel that
has bonded to the copper pads. I'm going to have the supplier guarantee the
board life in blood, but I would feel more confident in having confirmation
by this group's expertise. Thanks for your help.

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