2n5088 and 2n5089

[foozertone]

How can I tell em apart...explicity. I've been looking

Thanks

Jeff

[R.G.]

Every one I've ever seen have the numbers printed on the package.

[km-r]

both are NPN?

maybe he wants the differences "spec-wise"

[foozertone]

It's printed on them but it's too small for me to read even with a magnifying glass.

[QSQCaito]

Well, physically they look almost the same. You could measure hfe, 2n089 should be considerably larger I think. So you could use your multimeter to differ one from the other. Otherwise, I can't imagine any other way of testing them. Maybe If you have transistor sockets and put one, right after the other you'd most probably be able to tell who is who.


Bye bye

hope it helps

DAC

PS According to datasheets:
2N5088 hfe 300-900
2N5089 hfe 400-1200

[foozertone]

How do I test HFE? My meter has a transistor tester but it always reads first a 769 but settles down to 0. Which leads do I test or whatever. Please help.

[sengo]

Google "picking transistors" it's the first link.

Nick

[killerkev]

I can't believe that the #'s are sooo small that you can't read them!
To test Hfe, you need to put the pins of the transistors (EBC) in the correct slots of your meter. With me so far? a number should come up if it's in correctly. If not you'll get 1 or nothing(at least that's what mine does). This number will slowly drop the longer you leave it in the meter. 2N5088 should be in the range of 400 to 600 and the 2N5089 around 600 to 900 usually. What's the difference though? These trannies are pretty interchangable.