I am currently using a type UR (Humiseal 1A33) conformal coating which has
been shown to discolor over time and temp. Granted all UR's discolor over
time, but this one seams to be worse than others (Conathane 1155). The 1A33
is QPL approved and is very producible (no bubbles, very little T/U rework)

Is anyone out there using Humiseal 1A33? And what if any feedback or data
can you provide on reliability of this material as a conformal coating.

Appreciate any info
Thanks
Linda Woody
Lockheed Martin
Missiles and Fire Control

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