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4hv.org :: Forums :: Tesla Coils
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Inside The CM600 Brick

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dude_500
Tue May 10 2011, 02:03AM Print
dude_500 Registered Member #2288 Joined: Wed Aug 12 2009, 10:42PM
Location: Cambridge, MA
Posts: 179
I've never seen a picture posted online, so I figure people might be curious what's inside the CM600, and to save you the work of doing this as it's not exactly a fun task opening it to this point (never, ever bandsaw a brick, unless you want a sticky 2 day clean up mess of goo... fortunately someone in the shop warned me of this as I was turning on the saw so I used a hole-saw on the mill instead). This one is a CM600HA-24H


1304993011 2288 FT0 Img 1953
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Arcstarter
Tue May 10 2011, 02:18AM
Arcstarter Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
Here are a couple pictures of a halfbridge IGBT module i have. It has a lot of different junctions, i have also taken apart a cm400 600v halfbridge brick which had few junctions like the picture you posted.
1304993915 1225 FT115250 Igbt Brick Internals 001

1304993915 1225 FT115250 Igbt Brick Internals 002

That small red square was where i cut a the copper terminal to make it two seperate IGBTs.
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Patrick
Tue May 10 2011, 02:19AM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
nice pic, but what are the wiskers for, those cant be the gate connections, right?
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Arcstarter
Tue May 10 2011, 02:22AM
Arcstarter Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
Patrick wrote ...

nice pic, but what are the wiskers for, those cant be the gate connections, right?
Those are actually aluminum wires that connect all of the dies to the terminals including the gate. They are spot welded it seems.
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dmg
Tue May 10 2011, 02:30AM
dmg Registered Member #2628 Joined: Fri Jan 15 2010, 12:23AM
Location:
Posts: 627
The only brick I ever bothered to look into was a dead SCR halfbridge.

I couldn't find any spot welded wires/bond wires, (either I missed and ripped them out when I took it apart, or it was destroyed in the failiure of the device) but there where mostly just tabs and bridges of sorts bonded to the die to form a half bridge..

And offcoarse, no shortage of the goo.

1304994644 2628 FT115250 Module
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James
Tue May 10 2011, 03:31AM
James Registered Member #3610 Joined: Thu Jan 13 2011, 03:29AM
Location: Seattle, WA
Posts: 506
I had something fall on a Fujitsu IGBT 6 pack and crack the cover, so I took it off to repair it. Snapped a pic while I had it apart.
1304998295 3610 FT115250 Igbt
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MRacerxdl
Fri May 27 2011, 04:46AM
MRacerxdl Registered Member #989 Joined: Sat Sept 08 2007, 02:15AM
Location: São Paulo, Brazil
Posts: 476
What beautiful modules!

The ISOTOP (SOT227) cant be opened right? I have two dead ISOTOP mosfets here.
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Dr. ISOTOP
Fri May 27 2011, 07:25AM
Dr. ISOTOP Registered Member #2919 Joined: Fri Jun 11 2010, 06:30PM
Location: Cambridge, MA
Posts: 652
I think minibricks just have an ordinary die in them...I'm not sure whether you can open them by bending the tabs back and poking them real hard.
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