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Old 7th October 2012, 07:29 AM   #1
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Default Power module for class A single ended amplifier

I have a pair of these power modules, i know these are for industrial power use rated for 500A Ic and 2500Pd . i know it would be non linear in characteristic curves BUT can i use it say for 10A conitnous IC for 60V supply via a 8 ohm resistive load or current drain Power mosfet so i will get around 100W single ended class A amp.
The module is ID500A-030 by mitsubishi. Please note that i already have a spare pair of these with some serious heat sinks and swithcing mode power supply available. regards
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Old 7th October 2012, 08:28 AM   #2
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here is the pdf file for the module
Attached Files
File Type: pdf 500-030.pdf (130.3 KB, 118 views)
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Old 7th October 2012, 01:30 PM   #3
djk is offline djk
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The SOA on that part for linear use is horrible, 150W at 30V.

The $2 MJ15015 is better, it has 180W SOA at 60V.

The $3 MJ21194 has 250W SOA at 60V, and is faster than the MJ15015.

I have about 600 pcs of 2N6274 that are equally horrible for linear use. Rated at 50A and 30Mhz they have about 30W SOA at 30V. This part was about $40 (30 years ago) as an MRO part, and is about $300 today for mil-qualified use (we use these at work). At $300 each, 600 pcs of these would theoretically be worth $180,000. I made a big mistake when I bought them for $1 each. I saw this part in a cheap 12V power supply used as a pass transistor, that's about all they're good for.
Candidates for the Darwin Award should not read this author.

Last edited by djk; 7th October 2012 at 01:33 PM.
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