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NQ6U
02-21-2011, 11:12 PM
I recently acquired a box full of miscellaneous electronics components (thanks, Steve!) and am in the process of identifying everything. I'm done with most of the semiconductors but there are a couple of items that I'm having problems with. The picture below shows one of them--it looks like a transistor, but it's not. I figured it's probably a voltage regulator, but I can't find a number that matches up with it. Anyone here have an idea? The lettering reads ZEN 315.

http://i815.photobucket.com/albums/zz79/gyrogeerloose/wtf.jpg
KG4CGC
02-21-2011, 11:16 PM
Are you sure it's not? When I was about 10 years old, I used to buy transistors that looked just like that. Got a transistor tester? An old Micronta or Archer unit?
N2CHX
02-21-2011, 11:16 PM
http://www.nteinc.com/specs/100to199/pdf/nte100.pdf
N2CHX
02-21-2011, 11:17 PM
"NTE101 (NPN)
Germanium Complementary Transistors
Oscillator, Mixer for AM Radio,
Medium Speed Switch"
N2CHX
02-22-2011, 06:46 AM
You're welcome :)
NQ6U
02-22-2011, 08:49 AM
Okay, thanks. How did you find the info?
N2CHX
02-22-2011, 08:51 AM
Okay, thanks. How did you find the info?

NTE cross reference is your friend :) If you can't find it there, there's other places but if it exists it's probably in NTE's database.

You forget I spent 20 years maintaining obsolete equipment.
NQ6U
02-22-2011, 08:54 AM
NTE cross reference is your friend :) If you can't find it there, there's other places but if it exists it's probably in NTE's database.

You forget I spent 20 years maintaining obsolete equipment.

Okay, good to know.

BTW, if anyone needs a transistor to repair the horizontal deflection circuit on a TV/CRT monitor, drop me a line. I've got a bunch of them.
NQ6U
02-22-2011, 09:23 AM
Just downloaded the NTE cross reference app. Thanks for the heads-up--I've got a few other unidentifiable transistors.
KA9MOT
02-22-2011, 01:19 PM
See why I didn't want to sort and try to identify all of that stuff?
NQ6U
02-22-2011, 01:22 PM
See why I didn't want to sort and try to identify all of that stuff?

Yep, I sure do. It wasn't exacty difficult, but it sure was tedious. I made up an Open Office database of all the semiconductors so I could check and see what I have on hand. Still have to sort through the capacitors and resistors but at least I won't be trying to hunt down datasheets for those.
KA9MOT
02-22-2011, 01:24 PM
Did you find any Diodes? Seems to me a radio and tv repair shop should have thousands of them......I didn't see many.
NQ6U
02-22-2011, 01:31 PM
A few, not a huge amount, but some of them are pretty interesting:

1N142
1N4143
1N4735A
1N4737
1N4740
1N5231B
D10SC4MR
ECG109
ECG597
GP15D
NTE506
NTE570
KA9MOT
02-22-2011, 01:31 PM
Looks like you got them all!
N8YX
02-22-2011, 02:24 PM
A few, not a huge amount, but some of them are pretty interesting:

1N4735A
1N4737
1N4740

These are Zeners.

Have to check on the rest, however.
NQ6U
02-22-2011, 02:27 PM
These are Zeners.

Have to check on the rest, however.

I already got the info on 'em. Some are Zener diodes, some are germanium rectifiers, some are silicon rectifiers and a few are Schottky diodes.