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Registered Member #56
Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
I don't know, seems kind of odd for it to have 6 pins... Perhaps a 3 phase one?
Are they all the same size? If one is smaller that might imply that that is the gate of an active component.
Can you measure the voltage drop across the terminals? That would give us an idea of id it is just diodes or if there is something else going on in there...
Registered Member #227
Joined: Mon Feb 20 2006, 10:47PM
Location: Cambridge Ontario, Canada!!
Posts: 127
part no. as printed: DM3 I(FUNNY SIDEWAYS DIODE)R 7734 1109534
its like one in the morning so i cant get my multi meter right now... maybe tomorow... the pins are heavy duty suckers! the ones in the middle seem to be thinner... "SEEM"
Registered Member #30
Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
I don't know what it is :-/ I guessed it might be a three-phase diode bridge but those only have five terminals. Maybe it's a pair of two-diode bridges in a common case, or some sort of SCR bridge?
If it helps, "I Funny Sideways Diode R" is the logo of International Rectifier (who also make IGBTs, SCRs and MOSFETs)
Registered Member #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3141
I don't know what it is but 7734 looks like the date code - Week 34 in 1977 so you're NOT looking for MOSFET or IGBT probably two Thyristors or two pairs of diodes.
Registered Member #227
Joined: Mon Feb 20 2006, 10:47PM
Location: Cambridge Ontario, Canada!!
Posts: 127
I talked toa guy today... A very smart guy...(been doing electronics all his life[40something]) and he said it coul be an SCR or 2 SCRs for that matter. Even if it is or is not, what the heck do I use it for? Maybe in my new tc... The guy who gave it too me didn't know what it was but said its rated 150 amps at 1.5KV or something like that. Transistor?
As for testing it I have my multi here, what and where do I test it? I have done a little but the readings mean nothing...
Registered Member #89
Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
Why dont you try to test it carefully? Or go around international rectifiers parts to find something similar? Thats probably not IGBT, nor SCR, maybe 3 phase graetz and one pin is auxiliary for something (maybe just internally connected to other)...
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