Hi! Servicing a SGI Fuel CPU, I found a short circuited diode. The only marking is S4 15. The companion diode, working, has 0.2V of forward voltage, so it could be a fast recovery Schottky switching diode. Could you help with the marking?
Thanks!
Diode identification
Apr 15, 2014
4 Replies
Maybe it is a protection zener of 15 volts? (which blew while protecting?)
1S415 ?
No, it's a small black axial diode, half lenght of the standard 1N4001...
Sure its S and not 5 ? "included within" on
formatting link
shows a lot of possibles
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