I have a few transistors(I think) I am trying to identify.
They look like stud mounted SCRs with a 1/4-28 stud but the ohmmeter
says they are NPN transistors. They were in a bag marked "servo amp
transistors" no ledgable markings on the transistors. Any suggestions
as to which type they maybe.


Jimmie

wrote in message
...
I have a few transistors(I think) I am trying to identify.
They look like stud mounted SCRs with a 1/4-28 stud but the ohmmeter
says they are NPN transistors. They were in a bag marked "servo amp
transistors" no ledgable markings on the transistors. Any suggestions
as to which type they maybe.


Jimmie

M cubed makes a nifty tester that automatically identifies the leads, type
(NPN etc) DC beta , leakage etc.

Dale W4OP

"Dale Parfitt" wrote in message
news:Vzrnk.526$ZV1.188@trnddc07...

M cubed makes a nifty tester that automatically identifies the leads, type
(NPN etc) DC beta , leakage etc.

This is a way cool device and no homebrewer should be without it.

...

On Aug 10, 8:39*am, "xpyttl" wrote:
"Dale Parfitt" wrote in message

news:Vzrnk.526$ZV1.188@trnddc07...

M cubed makes a nifty tester that automatically identifies the leads, type
(NPN etc) DC beta , leakage etc.

This is a way cool device and no homebrewer should be without it.

..

Sorry, they are NPN transistors. I was trying to find out what type
they may be to determin there suitability in a project. I have had
them since the early 70s. I also found another bag of them and they
are PNP. Beta measures at about 30.
Case style looks like a TO48.