Thank you William.

The main culprit is: is it really a standard type thyristor?

The pin names make me a little scared: K1, A, K2
That make it look like a double diode, but "K2" is a smaller pin and go to=
 what looks like a trig section on the PCB... so it must be some transistor=
 cousin...

I am used only to Thyristor=3D A, G, C
Triac=3D A1, A2, G

The fried device is short between K1 and K2, and A to theese measures like a=
 diode.

Yes, it might be an alternistor (like triac but faster), still; can somebody=
 confirm K1, K2, A is relevant pin names.

The whole device is a FANUC DCmotor/tacho servo speed driver A06B-6047-H002.
They do not tell the data of the semiconductor, will not supply schematics,=
 and i have not yet got an answer of when a replacement can arrive.

If i can just get data i can probably use a standard device.
I have got space and tools to mount other packages if necessary.

I am currently dissasembling and drawing schematic.
There is in the output stage a H-bridge, a fat NPN, and this thyristor, plus=
 three power resistors involved.  Motor is 140VDC 26A peak.

Thank you so far.

/Morgan

Hej William Bross. Tack f=F6r ditt meddelande 14:42 2003-09-16 enligt nedan:
>Morgan,
>Have you looked at Teccor? 600v 35a triac is Q6035P5.  They are about
>the only to-3 fastpak mfrs. I can find.
>
>http://www.teccor.com/web/menuitems/downloads/datasheets.htm#ds_alternis
>tor
>
>look under triac section.
>
>Bill
>
>-----Original Message-----
>From: pic microcontroller discussion list
>[mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Morgan Olsson
>Sent: Tuesday, September 16, 2003 3:42 AM
>To: PICLIST@MITVMA.MIT.EDU
>Subject: [EE:] Toshiba 30LDZ41 power thyristor(?)- Somebody got data
>please?
>
>
>I need data on 30LDZ41 for urgent replacement.
>This is a discontinued part from Toshiba.
>I guess it is a thyristor 400V 30A.
>
>I hope somebody here got an old databook from Toshiba
>-They seem to have lost their own old databooks! :(
>And i have found nothing on the net except a broker that did not want to
>dig unless i wanted at least 20pcs, and others who have not yet
>answered.
>
>Anyway, If I get data on it I can throw in a standard device!
>
>I attach a photo of the fried one i have.
>
>Thanks in advance
>/Morgan
>
>--
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--
Morgan Olsson, Kivik, Sweden

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