Re: Bulletproof your WG6100!

From: Clay Cowgill <clayc_at_diamondmm.com>
Date: Tue Jan 20 1998 - 14:17:31 EST

>Have various breakdown voltages; some to consider are: 27V, 30V, 33V, 51V, 68V
>They come in a large diode package (DO-201) so could easily just be
>soldered directly onto the transistor socket.
>Are relatively inexpensive: $1.36 each for the ones I am looking at.

Those are the Diodes, Inc. ones? (LiteOn)

General Instruments makes them too-- little different voltage selections:

24V
27V
30V
33V
36V
39V

(and then 51V and 68V)

In 10's they're $1.15 a pop. Singles are $1.28.

Do you think we're really need 1500W peak dissipation? 600W unidirectional
ones are only $.68 each in the above voltage ranges...

Anyone have any idea what a good clamping voltage would be? I don't even
know what to expect across CE on the transistors. Maybe 30V? What's rated
breakdown on the CE junction on a 3792 or 3716?

(Hey Anders, get that 6400 schematic scanned yet? ;-)

-Clay

Clayton N. Cowgill Engineering Manager
_______________________________________________________________________
/\ Diamond Multimedia Systems, Inc. clay@supra.com
\/ Communications Division http://www.supra.com/
Received on Tue Jan 20 11:17:51 1998

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