Leach output transistors

pooge · 11th January 2005, 01:24 AM

Has anybody used the MJ10022/23 transistors for the outputs on a Leach amp?

acenovelty · 11th January 2005, 01:45 AM

From the data sheet:

MJ10022 : 40 AMPERE NPN SILICON POWER DARLINGTON TRANSISTORS 350 AND 400 VOLTS 250 WATTS

Why would anybody "want" to use these in a Leach amp?

Prosit

MikeB · 11th January 2005, 01:25 PM

That's a big NO !
This transistor was designed for switching. Did you look at SOA ?
0.3Ampere at 100volts, there are really better devices !
Also, this transistor seems to be no longer in production.

pooge · 14th January 2005, 08:12 AM

Whoops! I typed the wrong numbers. They should have been MJ15022/MJ15023. Sorry.

sajti · 14th January 2005, 08:21 AM

Quote:

Originally posted by pooge
Whoops! I typed the wrong numbers. They should have been MJ15022/MJ15023. Sorry.

Looks much better!

The MJ15022/23 is good for Leach amplifier.

sajti

MikeB · 14th January 2005, 09:26 AM

Or use the mj15024/25, this one is often used in many applications,
as it's been prooven to be very robust.
Ampslabs use these throughout their bipolar amps.

11th January 2005, 01:24 AM	#1
pooge diyAudio Member Join Date: May 2003 Location: Northern Va.	Leach output transistors Has anybody used the MJ10022/23 transistors for the outputs on a Leach amp?

11th January 2005, 01:45 AM	#2
acenovelty diyAudio Member Join Date: Aug 2004 Location: SF Bay Area	From the data sheet: MJ10022 : 40 AMPERE NPN SILICON POWER DARLINGTON TRANSISTORS 350 AND 400 VOLTS 250 WATTS Why would anybody "want" to use these in a Leach amp? Prosit __________________ Two people can keep a secret if one of them is dead.

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11th January 2005, 01:25 PM	#3
MikeB diyAudio Member Join Date: Apr 2004 Location: Gütersloh	That's a big NO ! This transistor was designed for switching. Did you look at SOA ? 0.3Ampere at 100volts, there are really better devices ! Also, this transistor seems to be no longer in production.

14th January 2005, 08:12 AM	#4
pooge diyAudio Member Join Date: May 2003 Location: Northern Va.	Whoops! I typed the wrong numbers. They should have been MJ15022/MJ15023. Sorry.

14th January 2005, 09:26 AM	#6
MikeB diyAudio Member Join Date: Apr 2004 Location: Gütersloh	Or use the mj15024/25, this one is often used in many applications, as it's been prooven to be very robust. Ampslabs use these throughout their bipolar amps.

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