looking for a part replacement/compatible substitute...

modessitt

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looking for a part replacement/compatible substitute...

trying to find a 2N4093/ITE4093. NTE cross is NTE466. Apparently it is obsolete (according to Mouser). I have 3 shorted on my Carnival sound board, and would like to replace them. Anyone got a good substitute. I tried looking in my NTE catalog at the specs, and the only part I have even listed on the same page is a 2N7000 (NTE491)...
 
I was hoping for something I may have on hand, or something common (like a Williams sound board) that I could steal them from.

And those links are for the TO-18 package. The ones I pulled are the TO-92. Not sure if that matters or not...
 
The datasheets I find show 2N4092 as TO-18, and ITE4092 as TO-92. Their specs are the same... but watch the pin configurations.

ITE4092 produces no NTE cross.
2N4092 crosses to NTE 466 (as you mentioned).

If you're looking for a cross to another (non-NTE) xistor, the link I posted above shows several possibilities: BFS 75, BFS 77, 2N4857, 2N4860, 2N4392.

Looks like several manufacturers make a version of the 2N4392 in a TO-92 package: PN4392. They go for $0.17 at Mouser.

EDIT:

In second thought, the xistor is probably just being being used as an analog switch (to pass or block the audio signal, not as an amplifier). If that's the case, a lot of N-channel JFETs might fit the bill. I'd bet even an MPF102 (available at Radio Shack) would do the job...
 
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In second thought, the xistor is probably just being being used as an analog switch (to pass or block the audio signal, not as an amplifier). If that's the case, a lot of N-channel JFETs might fit the bill. I'd bet even an MPF102 (available at Radio Shack) would do the job...

Hmm. I might try that. What's the worst-case scenario if use one and it doesn't work? Blow the transistor? Blow one of my chips?
 
Hmm. I might try that. What's the worst-case scenario if use one and it doesn't work? Blow the transistor? Blow one of my chips?

I'd be happy to consider that. Can you point to the schematics of the subject PCB, and identify the component in question?

EDIT: I just re-read your original post, more closely. ALL THREE of them being bad sounds unlikely to me... How are you testing the transistors?? Testing FETs is different from bipolar junction transistors: http://www.allaboutcircuits.com/vol_3/chpt_5/3.html (and I'm sure there are hundreds of other pages on testing FET/JFET/J-FET transistors). Point is, it's NOT like a BJT (where you use diode-test mode, and expect to find either open or a ~0.6V drop) It may appear to be short source to drain (which are interchangable), or when the base is properly biased (which is different for N-channel & P-channel).
 
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Wonderful.

Was checking it like a normal transistor. Two of the legs measure as shorted out-of-circuit. Didn't think about it being normal...
 
Well, I found ONE NTE466 at Fry's, so I got it just to see if it checks the same. It's a TO-18 package, but it should work if installed properly...
 
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