Correct me if I am wrong, is it depend on the layout? Like copper weight, tg, ground plane, etc. Much easy way to me is rent a high speed camera and get the true deflection by data. My silly 2 cents .
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----- Original Message -----
From: TechNet <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Sent: Thu May 08 10:20:03 2008
Subject: Re: [TN] deflection data???
Look for an SMTA paper
"FLEXURAL STRENGTH OF BGA SOLDER JOINTS WITH ENIG SUBSTRATE
FINISH USING 4-POINT BEND TEST" SMTA Pan Pacific
Microelectronics Symposium, Kauai, HI, Jan. 25 – 27, 2005
At 07:03 AM 5/8/2008, Dan Skweres wrote:
>Good day all!
>I have received an inquiry from a customer
>regarding deflection data. They want to know if
>there's any data they can input so they can
>simulate if their BGAs will be ejected off their
>PCBs in a high vibe environment. The PCB is a 14
>layer FR-4 .062 thick. Any guidance would be greatly appreciated.
>Thanks,
>Dan S.
>
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