Author Topic: CM600DU-24NF availability or substitute?  (Read 221 times)

Offline SAMGO

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CM600DU-24NF availability or substitute?
« on: October 20, 2020, 10:50:25 PM »
I to everyone, I hope you are doing well! ;)
I managed to get a contract on a giant tesla coil project with my school. I would like to use some CM600DU-24NF to be on the safe side, since they are already tested and proven components.
Would anyone know how to direct me on where to find them?
I'm looking around but the only place where I can find them is on ebay or cina.

I had also build a "smaller" DRSSTC for personal use using 2x CM300DY-24H for 41$ from cina and for now they have not yet become expensive fireworks, maybe worth the risk?

Any ideas on newer igbts? Many new igbts use springs and contacts systems that are good for pcb compact design but not for a project like a tesla coils.


Down here you can find some photos of my last tests which I imagine are always welcome.



Offline Mads Barnkob

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Re: CM600DU-24NF availability or substitute?
« Reply #1 on: October 20, 2020, 11:50:25 PM »
There are many different packages, so do not rule out CM600, just because you can not find the DU package. It is mostly just the terminal position on the pack that changes. There is also CM400,800,1000,1200 to look for, as long as you do the Fres2 loss calculations to insure they do not turn into fireworks ;)

There are also a wide use of Infineon FFxxx or Semikron SKMxxx IGBT bricks

IGBT chart is at the bottom of the article here: http://kaizerpowerelectronics.dk/tesla-coils/drsstc-design-guide/igbts/
http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
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Offline SAMGO

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Re: CM600DU-24NF availability or substitute?
« Reply #2 on: October 22, 2020, 11:21:19 AM »
There are many different packages, so do not rule out CM600, just because you can not find the DU package. It is mostly just the terminal position on the pack that changes. There is also CM400,800,1000,1200 to look for, as long as you do the Fres2 loss calculations to insure they do not turn into fireworks ;)

There are also a wide use of Infineon FFxxx or Semikron SKMxxx IGBT bricks

IGBT chart is at the bottom of the article here: http://kaizerpowerelectronics.dk/tesla-coils/drsstc-design-guide/igbts/

Hey Mads thank you for you answer, then I will search something else that is available near me and let you know what I can come up with ! ;D

Offline Daniel Uhrenholt

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Re: CM600DU-24NF availability or substitute?
« Reply #3 on: October 24, 2020, 11:07:33 PM »
Hi,

First off all, how big will the coil be, and how long do you hope the sparks will be?

My large coil is Around 2 meters tall and made 2.6-2.8 meter sparks, as I recall. ( being 10 years since last run )
I use a couple of SKM400GB124D running a full bridge running 550-600VDC on the bus capacitor using an 3 phase variac. And I have never had one of these IGBTs failing on this coil.

Cheers

Daniel

High Voltage Forum

Re: CM600DU-24NF availability or substitute?
« Reply #3 on: October 24, 2020, 11:07:33 PM »

 


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