At 10:48 AM 8/28/01 -0500, you wrote:
>Dan:
>     "Mica is somewhat flimsy in the robustness
>      category. I wonder whether it will flake
>      apart under the constant vibration from the
>      motor."
>
>How would this ocurr if the insulator is coated
>in HS compound/thermal grease and securely
>held between the heatsink and transistor body?
>
>I have *never* seen a Mica insulator 'flake' apart
>in use - perhaps you have a scenrio where this has
>ocurred? Perhaps the extra-severe application
>on a lawn mower would contribute to this?
.............
>


Jim, my "conjecture" was based upon what I said in my
last sentence above, and what you said in your last
sentence here below ..... I could think of any number
of scenarios on how excessive, continuous hi-speed
vibrations could lead to mechanical failure, etc.

- dan
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