OC74.... Anyone got any experience with them?

[ch1naski]

I've got a couple Valvo OC74 transistors, both not to bad on leakage.... No a lot of info I've found for them, tho. A couple of old posts on diysb
concerning using them in a rangemaster.
I wanna throw one in a tonebender for q3. Usually I've only noticed folks staying with the tried and true combos for TB circuits.
Since I only have a bunch of Russian GT403'S and some crazy oddball germanium's from antique radios handy, I figured I'll be the guinea pig.
Thoughts about the valvo, anyone?
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[midwayfair]

As long as the gain is the right range and the leakage is right (you don't want it too low in a TB), then go ahead and rock it. You're probably using a socket anyway, right?

Most of the OC7x series is pretty good, but I do prefer the black glass ones in general over the metal bullets as the leakage is consistently better on the later construction.

[ch1naski]

Thanks, Jon.
Tested with the keen germanium setup, so leakage is not too good, but not too bad either . HFE is near 110, so I'm going with 65, 75, 110. I'll experiment from there

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