Hey guys, I'm new. I live in the USA, and go to school for electrical engineering at carnegie mellon.

Questions are:

1) How do I identify the collector / emitter on an nkt275. Can't seem to find it online.

2) Why don't I get reasonable leakage values when I try testing them as suggested on the famous "The technology of the fuzz faec" article. I will link. No matter what I do I cant seem to even get more than millivolts running through the 2.8k ohm resistor. PLEASE HELP!

article: Technology of the Fuzz Face - Frame Definition

Arbiter Fuzz Face, eh?

NKT275 is PNP.

Datasheet Archive - NKT275 datasheet - NKT275 application note - NKT275 pdf



So both cathodes are at the base.

Stick your multimeter on a low ohm range. Emitter to collector and base to emitter should be open.

Newmarket stopped making this component a long time ago. The cheap US modern copies are nowhere near as good, and you'll get a COMPLETELY different performance (and hence sound) from them.

Analog Man Sun Face and Fuzz Face Page

How might I distinguish between the cheap US copies and the real ones.

See here:

My '59

You could always substitute it with another germanium transistor, of course.