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Wed, 22 Jul 1998 07:55:32 -0700 |
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REGARDING ASSY:Reliability, SMT
With regards to surfmnt glass diodes (melf-type), how does one protect the body
from conformal coating. In the past, we sleeved the axial body to protect it from
CTE mismatch. I haven't yet contacted Mfg about the exact P/N of the conformal
coat material. Is this necessarily the reason for crack initiation? Could the cause be
the 'cooling' slope during reflow, thereby allowing the coating mismatch to
propogate the cracking?
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