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April 2006

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Subject:
Re: Solder joint reliability of BGAs and 0402 chip on blind vias
From:
Guy Ramsey <[log in to unmask]>
Reply To:
[log in to unmask]
Date:
Fri, 21 Apr 2006 16:38:19 -0400
Content-Type:
text/plain
Parts/Attachments:
text/plain (51 lines) 
They work fine when filled and plated. I've had limited but bad experience
with open blind vias in pad. It may be possible to work out a good process
if the via hole is small enough and shallow enough for repeatable solder
thieving.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Ted Kong
Sent: Friday, April 21, 2006 1:57 PM
To: [log in to unmask]
Subject: [TN] Solder joint reliability of BGAs and 0402 chip on blind
vias


Hi all,

Has anyone used blind vias on BGAs or 0402 chip
packages? Will they form reliable solder joints?

Thanks all in advance.

Ted

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