T i m expressed precisely :
On Sat, 11 Feb 2006 22:12:54 GMT, raden wrote:

In message , Harry Bloomfield
writes
T i m formulated the question :
Wasn't it also in the heatsink compound we used to use ..?

No, it was inside the actual device -usually the higher power rated
devices.

The main danger was from insulating heatsink washers - I've got some
somewhere. The danger being from inhaling beryllium dust if one got
broken

Were they the translucent ones you found under 2N3055's ;-)

All the best ..

T i m

Those I think were mica.

--

Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk