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October 2002

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Subject:	Re: Standard "OSP" note
From:	Kitty Hines <[log in to unmask]>
Reply To:	(Designers Council Forum)
Date:	Wed, 23 Oct 2002 10:14:43 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (50 lines)

I also have a question about board finishes.  I've heard conflicting
reports regarding immersion silver, immersion golld and plated tin/lead.
Whaich has the better shelf-life?  Which is the better finish to use for
micro BGA's?  Which will provide the best surface (flatness)?
Thanks in advance for your input,
Kitty


-----Original Message-----
From: Fred Dark [mailto:[log in to unmask]]
Sent: Tuesday, October 22, 2002 10:27 AM
To: [log in to unmask]
Subject: [DC] Standard "OSP" note


We are considering a alternate finish for our board with "BGA's" on
them.
Would you happen to know a standard way of noting this on a fabrication
drawing...?

Regard's, Fred Dark Jr.

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