[SI-LIST] BGA Soldering

Hi Experts ,
While trying to solder some LGA's , we are seeing some strange issues.The XRAYS 
& the Die penetration test reveal the Soldering is Okay.However , the 
performance of the board reveals that there is a soldering issue.When we 
replace the LGA with another chip , the board works fine.Of course even the 
original LGA works fine when re soldered on some other board.

I guess the XRAY & the Die penetration test cannot be 100 % conclusive regarding
the Soldering quality.

Is there any way to establish the soldering quality authentically.I mean to say 
are
there any better tests ?

Thanks in Advance.

Regards
Sunil Bharadwaz



      

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