[PCB_FORUM] Re: bga balls

Balls are typically 80% of the pad.
 
 

Jerry 

        -----Original Message-----
        From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of
sjchar3@xxxxxxxxxxxx
        Sent: Wednesday, April 26, 2006 10:13 AM
        To: icu-pcb-forum@xxxxxxxxxxxxx
        Subject: [PCB_FORUM] bga balls
        
        
        Group: I have a data sheet that says the solderballs are .019
nominal. Is there a rule of thumb for what pads size I should use?
        TIA
        Sam
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