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Looking for dual FET (I think...)

Hi all, I am looking for a replacement for what I believe is a dual FET. Or specs for this device so that I could fine a suitable replacement. The part I have is in a small metal can "transistor" type package (I forget the package designation, but it is the size of a metal can

2N2222) but with 6 leads. Base upon the application and the markings on the circuit board (G1, S1, G2, S2) I believe this to be a dual FET. The only marking on the can is "9610-TM" and "LS". I tried googling this p/n but did not find anything helpful. The manufacturer of the unit this is in no longer supports it or makes anything like it, and has no data on it, as it is 12+ years old.

Any ideas as to what that part is or where to find one?

Thanks for any ideas.

-AL A.

Reply to
alanganes
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Do you mean a dual gate , single FET or 2 FETs in a can - a lot of difference. What sort of frequencies is it handling?

-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on

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Reply to
N Cook

He said "dual fet". It also has six leads and no MOSFET I ever saw had six leads. Also, the circuit board has "S1" and "S2" which would indeed suggest to source pins.

Michael

Reply to
Michael Black

snipped-for-privacy@gmail.com wrote in news:1180093615.689349.323840 @k79g2000hse.googlegroups.com:

I had a similsr problem with a B&K analog FET meter, I used 2 matched audio amp fets to92 plastic case and glued them together with super glue.

Complete recalabration was required after this sub still use the ohm- meter part of the old meter yet today it has Hi and Lo power ohms 1.25 to 1.35 volts across leads on hi and 0.33 volts on Lo. Still find this usefull today.

R!!

Reply to
R!

It is 2 FETs in one package, matched, I'm sure. This is part of a preamplifier for a LN2 cooled infrared detector. The detector is essentially a reverse biased diode, so the currents involved are extremely small, in the range of 10^-8 to 10^-9 amps.

I have not yet determined with 100% certainty that the FET is dead, I will likely know that next week. If it is, I have a few options involving what amount to semi-educated guesses, but would rather know exactly what to get, if possible.

Thanks to all for taking the time to reply!

-AL A.

Reply to
Al A.

Oops, too quick with the send button. To answer the question of what frequency is involved here, they are low, 400-500 Hz, max.

Thanks again, AL A.

Reply to
Al A.

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