Don't know if Happy Holden is still at Big Blue/Fishkill. He ought to know a
lot, as being one of the column grid inventors.
Inge

-----Ursprungligt meddelande-----
Från: TechNet [mailto:[log in to unmask]] För Tan Geok Ang
Skickat: den 15 april 2008 13:23
Till: [log in to unmask]
Ämne: Re: [TN] Column Grid Arrays

I did it once, important thing is that the solder paste volume must have at
least 30% of the column height. If rework is needed, solder paste volume has
to be about that of SMT solder paste printing process.

________________________________

From: TechNet on behalf of Edwin Louis
Sent: Fri 4/11/2008 12:24 AM
To: [log in to unmask]
Subject: [TN] Column Grid Arrays



Does anyone know what specification calls out the board pad
diameter/solder column diameter ratio for column grid arrays and what
the values are?


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