Need to identify a diode

[Dazza]

I found some old circuit boards at a scrapyard I'm not sure what their out of, but sure do have some useful bits. Including some stud Mount diodes which I would really like to find out their voltage and ampere rating.

This is what is written on the diodes
86 40
Z322402 1-805

thanks in advance :).

[ante]

Dazza,

No symbols like a diode or a zenerdiode? I might be a zener since there is a Z in front of the digits. I think it

[Dazza]

Ante, this is what you call a late late reply ;D. I managed to find a few more of these diodes on heat sinks, the boards I salvage them from, are identical to the first one that I salvage them from, but they have different part numbers. Does the picture give you any ideas of what they might be ???.

[steven]

dazza there stud mount 10 amp diodes , i dont know the voltage rateings, theres a picture of them in one of my books

[Dazza]

Hi steven,
how can you be sure that they are 10 amp diodes?. I can be fairly certain that these are not zener diodes, from the diode symbol printed on them :).

[steven]

dazza zener diodes havr a similiar symbol your ones are stud mount, there the same types as listed in my book ,that are 10 amps but the ones you have i cant be sure on the corect current rateings

[steven]

:)

[steven]

[ante]

Hi Dazza, Steven,

Well I can see International Rectifier has produced it and as Steven says its very likely to be a 10A diode. The one to the right, does it have a clear diode symbol too other than the one in the IR logo?

[Dazza]

No ante, the second diode doesn't have a symbol like the first one. I was hoping that they were more than 10A but still very useful. The problem now is finding out their voltage rating. Any guesses of what the minimum voltage rating might be ???.

[ante]

It