Hi Technetter,

According to the fab shops, the recommended immersion
Ag thickness ranges from 5-25 micro inches.  My
quesiton is whether having thicker immersion Ag (let
say around 20 micro inches)would cause PTh solder
joint defects?  Will it cause sunken solder joint on
PTH leads?  If so, what is causing this to happen?

Thanks all in advance.

Regards,

Ted Kong.

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