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June 2008

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Subject:
From:
Bob Willis <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Bob Willis <[log in to unmask]>
Date:
Sat, 21 Jun 2008 12:49:30 +0100
Content-Type:
text/plain
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text/plain (66 lines)
Do you specifically know the chip parts have a SAC alloy coating, have you
had them tested and confirmed?

The parts I use and test are normally just tin?

Bob Willis
2 Fourth Ave, Chelmsford, Essex, CM1 4HA England
Tel: (44) 1245 351502
Fax: (44) 1245 496123
Mobile: 07860 775858
 
www.ASKbobwillis.com
 
New Bob Willis "Printed Board Inspection & Quality Control Workshop" 3rd
September www.ASKbobwillis.com/PCBworkshop.pdf 
 
Book your place on Bob's "Step by Step Failure Analysis Workshop" 11th
September  www.ASKbobwillis.com/faworkshops.pdf
 
 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of David Fischer
Sent: 20 June 2008 18:18
To: [log in to unmask]
Subject: [TN] SAC Plated Passives with SnPb Solder Paste

Good Day,

I am aware of the nuances of mixing SAC solder ball BGA's with SnPb solder 
paste, but are there any concerns, cautions or steps to take when 
soldering SAC plated passives (chip resistors, chip caps) to a PCB using 
SnPb solder paste? 


Thanks,

David Fischer
Manufacturing Engineering Manager
ATEOps NPI
Teradyne, Inc

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