<<  The term "dentritic growth" is becoming more synonymous with 85 C /85 
      RH electrical testing. Some refer to it as "hydrolytic stability" as 
      well. This results in basically "shorts" in systems with tight 
      spacings and high voltages. >>

Duane,

I beg to differ.  Dendritic growth is metal migration across an insulative
space.  It happens at room temperature, 35/90, 65/90 etc., not just 85/85.  I
would disagree that it is "synonymous" with 85/85 testing.  It is not.  

As for hydrolytic stability, it is not an electrical test and has nothing to
do with dendritic growth.  It is a test to see if a polymeric material will
revert to individual components in a high humidity condition.  This test was
originally done during the Vietnam era when we found that many coatings and
potting compounds reverted to individual elements (part A and part B) under
hot and humid conditions.

Doug Pauls
CSL

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