The balls HAVE TO have enough heat delivered to distribute Pb evenly throughout the joints. As a results they will collapse.
Regards,
Vladimir
SENTEC Testing Laboratory Inc.
11 Canadian Road, Unit 7.
Scarborough, ON M1R 5G1
Tel: (416) 899-1882
Fax: (905) 882-8812
www.sentec.ca
-----Original Message-----
From: Robert Kondner <[log in to unmask]>
Sender: TechNet <[log in to unmask]>
Date: Tue, 25 Sep 2012 20:26:28
To: <[log in to unmask]>
Reply-To: <[log in to unmask]>
Subject: [TN] Leaded Paste and Lead Free BGAs - Do they mix?
Hi,
I have a customer using leaded paste with lead free BGAs. I think they want
to have the balls NOT collapse for better optical inspection.
Sounds like a really bad idea to me but I have no explanation where I can
say as why.
Can anyone make suggestions either way?
Thanks,
Bob K.
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