<The original transistor has the following markings :
<
<Ti (Texas Instruments Logo)
<SWC0166
HP/TI house number doesn't cross in any of my books and I have a pile of
them(some very old).
<6934A (Date code, I think).
Most likely.
<It's in a TO5 can, and is certainly NPN.
There lie the next questions:
SIlicone or GErmainium? (makes a difference)
What is the collector to emitter voltage in circuit?
What is the base/emitter voltage for the ON case and OFF case?
How much current does it handle in circuit?
Allison
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My first try would be 2n2219, 2n3638 or even the standard roach (2n3904 or
2n2222).
Allison