Identify motorola transistor

[Cyclotron]

I bought an electronics workbench on the FB marketplace and found some old components from when it was used at a GE factory.

I've been attempting to identify these transistors in the attached image, but so far, no luck.

Does anyone recognize them?

[fzabkar]

Could it be this?

https://www.datasheetarchive.com/datasheet/2N1993/Motorola?id=b469800425cb3ff7&term=2n1993

[factory]

Could it be this?

https://www.datasheetarchive.com/datasheet/2N1993/Motorola?id=b469800425cb3ff7&term=2n1993

Probably not, as that is a Germanium transistor in a TO-39 metal can package.

It's possible it's a house coded generic part, labelled for GE.

David

[Benta]

Certainly custom marking. No telling what they are.

[joeqsmith]

We would commonly have them mark parts for us where I worked.   I too suspect this is what you have.  We would do this even with standard parts.  It may be a common part. 

Start by checking if they are NPN, Darlington...

Case is not the common EBC and I doubt they made too many TO92 case style 14(?).   Download a copy of their old 1980's small signal transistor databook.  Search for the case style.   Should narrow it down pretty fast.   If you can't Google find a databook, let me know as I am sure I have a PDF somewhere.   

In the end, do you really care?  Do you have a few reels or something and you have a need? 

[Cyclotron]

In the end, do you really care?  Do you have a few reels or something and you have a need?

It is a case of curiosity only. I found little bits of circuits and such that I just know some engineer made for testing or manufacturing harness.  A bunch of random components and these. I will test them and determine their nature but again, its all a case of curiousity.

Unless they are some "unobtaninium" part (doubtful) in which case they might be useful to someone.

[CaptDon]

Any chance it is 2SC1993 I checked the NEC specs and it looks right. Also, I would have to look at my old cross reference guide for ECG/NTE parts but as I recall GE, Sylvania and Zenith had a common prefix for there parts. I think one of them was 151 so with the transistor you have in the picture the 151 becomes assumed and the stock number becomes 1511993 or possibly 151-1993. The parts were ONLY marked with the last four digits. I could do some more digging since I have the old ECG cross reference catalogs. They are handy since they show the case diagrams and other useful data. I also have all 3 ECG technical manuals!! Nearly 1000 pages in each!!

[coromonadalix]

this one ?

https://www.datasheetcatalog.com/datasheets_pdf/2/N/1/9/2N1993.shtml

yep there was a time    if not mistaken     2n ....

do you have some component tester ?   at least in diode mode of a dmm,     you could read the junction voltage

[schmitt trigger]

Did Motorola second-source Japanese transistors?
Who knows. But if I were to bet money on it, I would say they are private-labeled devices. In another company I worked for, they also had that practice. It helps when they were buying millions of devices a year.

[coromonadalix]

?

[CaptDon]

I edited my earlier post, check it!

[factory]

this one ?

https://www.datasheetcatalog.com/datasheets_pdf/2/N/1/9/2N1993.shtml

yep there was a time    if not mistaken     2n ....

do you have some component tester ?   at least in diode mode of a dmm,     you could read the junction voltage

See reply #2, wrong package & material.

There are some small transistors in the TO-92 package with ECB lead configuration, such as the 2N370x (aka MPS370x) series, 2N3391 is another I remember, but the OP hasn't checked what type of transistor (NPN, PNP) they are yet.

David

[Cyclotron]

There are some small transistors in the TO-92 package with ECB lead configuration, such as the 2N370x (aka MPS370x) series, 2N3391 is another I remember, but the OP hasn't checked what type of transistor (NPN, PNP) they are yet.

David

I'm sorry, I got sidetracked. 
my DSO-TC3 claims it is a PNP.,  hFE=262, Vbe=0.76v, Ic=2.3mA

[factory]

Could be 2N3702, 2N4058 to 2N4062 (minus 2N4060), there are probably others that match the pinout and spec.

David