I have a whole bunch of unknown power transistors that were obtained with some surplus aerospace parts.
I can't even identify the metal can package on these things. The major diameter is .600 in and the minor diameter is .500 and they have a .300 diameter pin circle. One pin is connected to the case.
They are all RCA 36810 and are silicon (.575 V drop @ 4mA). They are from several different lot numbers. I have no idea if they useful for audio, they might be for some sort of microwave component.
I can't even identify the metal can package on these things. The major diameter is .600 in and the minor diameter is .500 and they have a .300 diameter pin circle. One pin is connected to the case.
They are all RCA 36810 and are silicon (.575 V drop @ 4mA). They are from several different lot numbers. I have no idea if they useful for audio, they might be for some sort of microwave component.
Can these be characterized?
I sure do have a bunch of these things....
If anyone has the wherewithal to examine some of these mystery transistors to try and figure out what they are, and if you'd like to give it a shot, just let me know and I'll try and send some along to you for a look-see.
????
I sure do have a bunch of these things....
If anyone has the wherewithal to examine some of these mystery transistors to try and figure out what they are, and if you'd like to give it a shot, just let me know and I'll try and send some along to you for a look-see.
????
I have no idea what they are. But since you have many, can you crack one open to see the die size? Maybe then we can guess if they are small signal or power transistors.
Looks like a TO-8 case. That would make it an early silicon transistor like a 2N1701.
2N1701 | Microsemi
2N1701 | Microsemi
It has a heat spreader so I guess it is meant to dissipate some power. Probably the same rating as TO-220 devices or a bit more. Would be hard to mount it to a heatsink though.
A quick check of breakdown voltage and Beta should show they are about the same as a 2N1701.
Uses; relay driver, voltage regulator, 10 watt industrial amplifier, heater control and artwork.
Not really valuable, but should sub for just about any low to medium power transistor.
One nice thing to test is noise level, sometimes at low current large die transistors can be very quiet!
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