Question about diodes I just received

bitzie

bitzie

Active member
OK, so a noob question here. I just received a couple ebay orders of germanium diodes. The middle diode in the image was listed as "D9V/Д9В/1N295X/1N87T/1S75/AA137/GD72E3/AAZ10 GERMANIUM DETECTOR DIODE" and the other two as "D9V Germanium diode. 30V 20mA. USSR." I have yet to test them at all as I just opened the packages, but obviously the black ones were a bit of a surprise to see. There's 8 of them in with the package with the bottom diode and they are also printed with 8192 below the Д311A. Are these interchangeable? Although I guess my first question should be did I get the right diodes for pedals in the first place?

20210720_143414.jpg
 
They are all beautiful in their own way. 🤣
Test them out. I bet they all will work quite well for your needs. Make sure you test the cathode from the anode and don’t assume the band represents the cathode side. (Those sneaky Russians.....lol...I kid).
 
The D9Vs that I have look like your middle and bottom ones (I can't check for sure right now but I have a memory of a couple of them having only dots instead of full stripes). The Russian letter that looks like an A is a D in English, which may help you find the datasheet for the other ones.

To see how well they'll work you can socket the diodes and try a few out. Can't hurt!
 
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