Tubelab SE diode substitute

sbelyo · 22nd April 2008, 03:29 AM

D2, D3

Manufacturer IXYS
Manufacturer Part Number DSEI12-12A
Description DIODE FRED 1200V 11A TO-220AC

Digikey and mouser are out of them until mid June...

Is there a substitute from mouser or allied that is just as good?

sbelyo · 22nd April 2008, 11:21 PM

I don't see anything on mouser

tubelab.com · 23rd April 2008, 02:14 AM

Any FRED diode that is rated for 1200 volts or more will work. Other TO220 packaged diodes with a "fast recovery" or "soft recovery" characteristic will also work.

I have used the IXYS DSEI 20-12A and the IR HFA06TB120PBF (now made by Vishay) before.

sbelyo · 23rd April 2008, 03:52 AM

Thanks George...

Is there any problem with using this resistor for R7 from mouser instead of the panasonic one from digikey.
https://www.mouser.com/Search/Produc...-MO2LT631R104J

It's bigger, but it looks like the lead spacing will just fit. I just don't want to use a part that will degrade the sound.

Evenharmonics · 23rd April 2008, 04:30 AM

It's same value and same type (metal oxide). I don't see why it wouldn't do the job just as well.

eddiemeddiem · 23rd April 2008, 08:05 PM

I was in the same situation over the weekend, and I decided to order p/n 747-DSEI12-10A. This has nearly the same specs as the 747-DSEI12-12A, the only differences being:

10A 12A
------ ------
Vfwd 2.1V 2.2V
Pdsp 75W 78W
Vrev 1000V 1200V

Are these specs not acceptable? I noticed that Mr. Tubelab mentioned a reverse voltage of 1200V...

Should I order the DSEI20-12A instead?

Thanks,
Eddie

22nd April 2008, 03:29 AM	#1
sbelyo diyAudio Member Join Date: May 2004 Location: East Coast	Tubelab SE diode substitute D2, D3 Manufacturer IXYS Manufacturer Part Number DSEI12-12A Description DIODE FRED 1200V 11A TO-220AC Digikey and mouser are out of them until mid June... Is there a substitute from mouser or allied that is just as good?

23rd April 2008, 02:14 AM	#3
tubelab.com diyAudio Member Join Date: Jul 2005 Location: South Florida	Any FRED diode that is rated for 1200 volts or more will work. Other TO220 packaged diodes with a "fast recovery" or "soft recovery" characteristic will also work. I have used the IXYS DSEI 20-12A and the IR HFA06TB120PBF (now made by Vishay) before. __________________ Too much power is almost enough! Turn it up till it explodes - then back up just a little.

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22nd April 2008, 11:21 PM	#2
sbelyo diyAudio Member Join Date: May 2004 Location: East Coast	I don't see anything on mouser

23rd April 2008, 03:52 AM	#4
sbelyo diyAudio Member Join Date: May 2004 Location: East Coast	Thanks George... Is there any problem with using this resistor for R7 from mouser instead of the panasonic one from digikey. https://www.mouser.com/Search/Produc...-MO2LT631R104J It's bigger, but it looks like the lead spacing will just fit. I just don't want to use a part that will degrade the sound.

23rd April 2008, 04:30 AM	#5
Evenharmonics diyAudio Member Join Date: Apr 2007	It's same value and same type (metal oxide). I don't see why it wouldn't do the job just as well.

23rd April 2008, 08:05 PM	#6
eddiemeddiem diyAudio Member Join Date: Apr 2008	I was in the same situation over the weekend, and I decided to order p/n 747-DSEI12-10A. This has nearly the same specs as the 747-DSEI12-12A, the only differences being: 10A 12A ------ ------ Vfwd 2.1V 2.2V Pdsp 75W 78W Vrev 1000V 1200V Are these specs not acceptable? I noticed that Mr. Tubelab mentioned a reverse voltage of 1200V... Should I order the DSEI20-12A instead? Thanks, Eddie

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