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February 1999

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Subject:
Solder Composition for TBGA
From:
Wade Oberle <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 11 Feb 1999 10:14:21 -0600
Content-Type:
text/plain
Parts/Attachments:
text/plain (27 lines) 
Dear Technetters,
        This may seem like a silly question to some of the veteran
BGAers but here goes.  I have a TBGA from NEC that I need to place.  DO
all TBGAs use alloy 10Sn and 90 Pb for the solder balls or could they
use other alloys such as 63/37?  I will leave a similar message on the
NEC website and let you know the final answer.  I viewed the online spec
for this part number and there is no mention of the solder alloy.  This
makes me think it is an 'understood' industry standard that the alloy is
10/90.

Regards,

Wade Oberle
[log in to unmask]

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