[Amps] How to recognize beryllium

[Alf Pousar]

Beryllium is between junctio area and the heatsink, so beryllium is the bottom substrate. I dont know how to detect or recognoce "this is beryllium" other than reading the manufacturers 
description regarding beryllium.
Under no circumstances make any attempt  to grind or smooth beryllium surfaces, as the beryllium is VERY unhealty if inhaling beryllium particles.

Alf   OH2QM