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4hv.org :: Forums :: General Science and Electronics
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Schottky Diodes in //

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ScotchTapeLord
Sun Jan 02 2011, 11:31PM
ScotchTapeLord Registered Member #1875 Joined: Sun Dec 21 2008, 06:36PM
Location:
Posts: 635
Grenadier wrote ...

So my 48V 6A SMPS makes me a rich man? tongue

Yeah, I don't see any reason for a diode like that to be so expensive.


That's because you aren't designing them, making them, or selling them.

Though I'd certainly opt for a series connection of cheaper ones...
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Adam Munich
Mon Jan 03 2011, 07:15AM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
I suppose, but I think a better market strategy would be to make a bunch of them and sell them cheap. They could become a big hit with the manufacturers and then they buy them by the millions.
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Pinky's Brain
Mon Jan 03 2011, 11:40AM
Pinky's Brain Registered Member #2901 Joined: Thu Jun 03 2010, 01:25PM
Location:
Posts: 837
AFAICS there's only two manufacturers making 1200 Volt parts (and one which packages Cree chips). That's not going to help prices.
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Steve Conner
Mon Jan 03 2011, 12:11PM
Steve Conner Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
Grenadier wrote ...

I suppose, but I think a better market strategy would be to make a bunch of them and sell them cheap. They could become a big hit with the manufacturers and then they buy them by the millions.
Who buy them by the millions? There isn't a large market for the kind of exotic power electronics that would have 1200v silicon carbide diodes in it. I know of one high-end PC power supply that uses one, but it's presumably a 600v part.

Similar situation as with the miniblock IGBTs. The Fairchild part we loved to use in our Tesla coils cost about 30bux and was discontinued due to lack of demand. They never sold enough for the price to start coming down. I guess the hundreds of samples we vaporised didn't count. smile

A shame, because there's nothing quite as good left on the market.

Iamsmooth's project is the first amateur use of SiC diodes I know of.
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