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Old 11th January 2005, 02:24 AM   #1
pooge is offline pooge  United States
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Default Leach output transistors

Has anybody used the MJ10022/23 transistors for the outputs on a Leach amp?
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Old 11th January 2005, 02:45 AM   #2
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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
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Old 11th January 2005, 02:25 PM   #3
MikeB is offline MikeB  Germany
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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.
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Old 14th January 2005, 09:12 AM   #4
pooge is offline pooge  United States
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Whoops! I typed the wrong numbers. They should have been MJ15022/MJ15023. Sorry.
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Old 14th January 2005, 09:21 AM   #5
sajti is offline sajti  Hungary
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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
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Old 14th January 2005, 10:26 AM   #6
MikeB is offline MikeB  Germany
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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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