-=> Roy J. Tellason said to All
 -=> about "*BIG* TRANSISTORS" on 12-11-03  20:16.....

 RJT> Got some fairly hefty transistors here,  stud-mount package with a
 RJT> 1/4"-28 stud on the bottom of the package.  The ECG book I have here
 RJT> handy calls that a "TO61" package,  and they list a
variant with an
 RJT> isolated stud (which this is not),  and the version I have is called
 RJT> out for ECG73,  which does not appear anywhere else in the book.

I haven't seen transistors like that for about 40 years. But a
lot of SCRs use that package.

 RJT> There can't be _that_ many different types of numbers that use this
 RJT> package

HA! I wish.....

 RJT> Anybody care to guess as to what assumptions might be reasonable for
 RJT> these?

Yep. For my money they are SCRs.

But IMO doing some tests will be the only way you'll find what
they are, and even then ratings will be purely guesswork.

Unless of course you can find their part numbers.

 RJT> I'll bet I can find something to do with them...   :-)

Yup, once you know what they are ;-)

From Greg Mayman, in beautiful Adelaide, South Australia
   "Queen City of The South"    34:55 S  138:36 E

... A thing is not necessarily true because a man dies for it.
___ Blue Wave/386 v2.30

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