Hello all

Is there anyone can give me some info of pin hole in PTH.
Our end-customer complain that there is poor solderanility of our product.
After micro-section teh problem hole. there is some pin hole on teh PTH wall. Is
this is teh root cause of the poor solderability.
Any comment?


More, is there any reasons can cause poor solderability(non-wetting)?

Is there any good source can know more about the poor
solderability(non-wetting)?

Best Regard,
Nicholas Lai
9/18/99

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