Hello all
It is an old topic on the bow or twist of PCB....
In IPC-TM-650 2.4.22 rev B has stated the testing method....
But I want to know that whether it is appliable on Thin PCB such thichness is
smaller than 0.020".
As when I try to use the testing methos to test the warpage. The degree of bow
or twist will be reduces due to
weight of the board.
Can anyone tell me how to do the test on a thin PCB?
Best Regard,
Nicholas Lai
9/9/99
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