Hi All,
Working in Penang right now on solving another RoHS PB-free induced problem.
These sBGA's warp because of their thermally asymmetric design [copper heat sink], and that causes head-on-pillow-type no-solders.
Werner
-----Original Message-----
From: Hernefjord Ingemar <[log in to unmask]>
To: [log in to unmask]
Sent: Tue, Feb 2, 2010 9:30 am
Subject: Re: [TN] Wattado?
Bev,
stands for superBGA, Xilinx's largest ones.
H in P, exactly what Xilinx guessed too.
/Inge
-----Original Message-----
From: Bev Christian [mailto:[log in to unmask]]
Sent: tisdag 2 februari 2010 13:28
To: [log in to unmask]; Hernefjord Ingemar
Subject: Re: [TN] Wattado?
Ing,
What is an sBGA?
Without seeing the pics, sounds like head on pillow.
Bev
RIM
----- Original Message -----
From: TechNet <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Sent: Tue Feb 02 06:51:46 2010
Subject: [TN] Wattado?
Hi Netters,
about sBGA soldering. Some aren't accepted when Xray'd, see photos that will
(hopefully) come up. Ain't all as we want. See Xray pics.
A number of packages (560) have their solder globes placed in a 'cup', like in
the SEM photo. Have anyone seen these? Can these have a negativ impact on the
soldering process.
/Inge
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