IPC
600 states that moisture content above 0.3% can lead to give rise to
measling. I'm not so concerned about measling as I am deriving an
acceptance limit for moisture in PWBs. My company is seeking a moisture
acceptance level for PWBs. Can any of you explain the rationale for this
0.3% or is this arbitrary?
thank
you, Mike Weekes
Electroless Nickel /Immersion Gold (ENIG) has been tested extensively
in a round robin study conducted by the IPC Plating Cimmittee 4-14.
The
finish withstood more than 1.5 million actautions without any appreciable
increase in resistance. This was published in a paper by G.Milad &
G.OBrien in the proceedings fo the IPC fall meeting 2000 in Orlando FL and
also in te IPC Review.
The committee recommends ENIG for this application.
George Milad
Chairman IPC Plating Committee 4-14