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DIY Stompboxes => Building your own stompbox => Topic started by: Govmnt_Lacky on July 26, 2011, 07:56:52 AM

Title: Need help to ID a transistor
Post by: Govmnt_Lacky on July 26, 2011, 07:56:52 AM
Found this 4-legged transistor in a drawer here at work and I have not been able to find any info on it:

(http://i1139.photobucket.com/albums/n541/redmangreg/RT127transistor.jpg)

Any help on what the heck this is would be appreciated. The only other markings are on the side and they read:

3010480
6733 USA

The challenge is ON!  ;D
Title: Re: Need help to ID a transistor
Post by: Fender56 on July 26, 2011, 08:23:55 AM
Can it be a 2N6733?

http://alltransistors.com/transistor.php?transistor=6094

The 4th leg is ground and is connected to the casing. It is usually used in RF transistor. Though this one seems to be a power transistor.
Title: Re: Need help to ID a transistor
Post by: Govmnt_Lacky on July 26, 2011, 08:44:32 AM
Quote from: Fender56 on July 26, 2011, 08:23:55 AM
Can it be a 2N6733?

Can you explain how you came up with this?
Title: Re: Need help to ID a transistor
Post by: Fender56 on July 26, 2011, 08:54:21 AM
Bah, I took a guess from the marking, since 4-digits (without the "2N" marking) are usually used to determine american-made transistor (and diode). "3010480" must be a date code or production code.

But I may be wrong.
Title: Re: Need help to ID a transistor
Post by: amptramp on July 26, 2011, 09:18:26 AM
6733 probably is the date code.  It would be week 33 of 1967, week 33 being the second week of August.
Title: Re: Need help to ID a transistor
Post by: anchovie on July 26, 2011, 09:41:29 AM
This page (http://www.wbparts.com/rfq/5961-01-008-9968.html) cross-references the 3010480 code to a 2N1515. Long discontinued, but a modern equivalent is NTE160 (http://www.nteinc.com/specs/100to199/pdf/nte160.pdf).
Title: Re: Need help to ID a transistor
Post by: Govmnt_Lacky on July 26, 2011, 09:58:12 AM
Quote from: anchovie on July 26, 2011, 09:41:29 AM
This page (http://www.wbparts.com/rfq/5961-01-008-9968.html) cross-references the 3010480 code to a 2N1515. Long discontinued, but a modern equivalent is NTE160 (http://www.nteinc.com/specs/100to199/pdf/nte160.pdf).

Thanks James. I found that as well. After some research it looks like it is just a substitute. The pinouts for the 1515 do not match. I would like to find an EXACT match or datasheet for this piece but I doubt one will turn up  :'(
Title: Re: Need help to ID a transistor
Post by: Govmnt_Lacky on July 27, 2011, 09:46:53 AM
I was able to find that this is "possibly" a COMMON EMITTER transistor but still nothing beyond that.
Title: Re: Need help to ID a transistor
Post by: Govmnt_Lacky on July 27, 2011, 09:58:40 AM
Mystery solved!  :P

They are PNP Germaniums with an extra leg tied to the case.  :icon_lol: