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March 2010

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Subject:
From:
"David D. Hillman" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Wed, 10 Mar 2010 16:37:06 -0600
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Hi Lee - assuming that the 90/10 solderball is attached using Sn63Pb37 
(which is typically the situation), I would use my normal Sn63 solder 
protocols!

Dave Hillman
Rockwell Collins
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Lee Whiteman <[log in to unmask]> 
Sent by: TechNet <[log in to unmask]>
03/10/2010 04:14 PM
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Subject
[TN] 90Pb / 10Sn SOLDER BALLS






If you had to re-ball a BGA with 90Pb/10Sn non-collapsible solder balls, 
what would your peak temperature be? For reflow soldering processing 
purposes, what would your peak temperature be?

If it was eutectic SnPb, I would anticipate the peak temperature to be 
about 215C for re-balling and reflow soldering.

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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