QUOTE:
原帖由41楼楼主 fofo0223 于2007-11-26 09:39发表 
I just thinking about how can the solder ball be grown under the CSP backside.
Thanks very much for the CSP package file and BGA file.
In the manufacturing of BGA or CSP, there exist a special equipment :
==> Solder Ball Attach Machine or Solder Ball Mounter [ BGA植球機 ]
Procedure :
==> Flux was added on the IC substrate
==> Use the Nozzle to Pcik-and-Place the Solder Ball
==> Pass through the Reflow Oven回銲爐 for the melting of solder ball into IC substrate
==> Machine Vision System to inspect any missing Solder Ball ,
==> Daye Ball Shear tester: to test for Solder ball's shear force
One of the Solder Ball Mounter is Shibuya and you can take a look on the Web-site as follows:
http://www.shibuya.co.jp/english/sby/products/semiconductor/SBM250.htm
http://www.shibuya.co.jp/english/sby/products/semiconductor/index.htm#Anchor-58111
http://tw.acesuppliers.com/company/information_3695.html
[ 此贴被samnet1在2007-11-26 14:35重新编辑 ]