I refer to problems experienced by Andrew Buonviri. Some of the present
families of "No Clean" flux contain a higher alcohol content than those
of their predecessors. Under certain conditions, they can attack even the
best of prepared boards. It may be due to the lower solids content which
reduces the thermal barrier. I think you may need to talk to your
assembler and his flux supplier.
Alistair F. Murray
Artetch Circuits Ltd
U.K.
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