Hello all,

Have been looking for some kind of spec for HASL thickness and
uniformity. Having problems with small to fine pitch parts where HASL is
causing problems.

Only reference I can find so far is in 2221 where it says HASL is
checked not by mechanical thickness, but by the ability to solder per
JSTD003.
003 only talks about being able to solder - not about variability of
HASL causing problems.

My SMT people are giving me a hassle about the HASL......

Any suggestions??

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