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June 1997

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From [log in to unmask] Tue Jun 24 16:
28:57 1997
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>From willli Thu Jun 19 11:
38:44 1997
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Re: IONIC TESTING
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text/plain (21 lines) 
Graham brings up a good point.  When a stringent end-item ionic cleanliness
requirement is levied, it can be very difficult to meet consistently if you
have either absorbed contaminants in the solder mask or laminate, or if you
have a less than fully cured mask, a ROSE test will be hard  to pass.  If the
mask is not fully cured prior to HASL, they tend to absorb more flux and
leach it out in a subsequent ROSE test.

Doug Pauls
CSL

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