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Old 8th August 2004, 05:14 PM   #1
pburke is offline pburke  Germany
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Default source for Cree Schottky diodes

I've been trying to buy a few of these (in the US) but the source I used last (www.tubebuilder.com) seems to be non-functional.

Does anyone know where else I can order about two dozen 600V 1amp Schottky diodes? The quantity I need is well below what the manufacturer will sell, and none of the big online parts houses have anything over 100V

if not Cree - these parts would also work

Infineon P-TO220-2-2
ITC P-TO220-2-2 (IPD 45E60 labeled)

Thanks for any pointers

Peter
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Old 8th August 2004, 05:55 PM   #2
GaryB is offline GaryB  United States
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Digikey carries the Infiineon SiC diodes and will let you buy as few as 10 diodes.
Take a look at the following catalog page:
http://dkc3.digikey.com/PDF/T042/0621.pdf
or search for part # SDT04S60IN-ND which is a 600v 4A SiC diode.

---Gary
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Old 8th August 2004, 06:05 PM   #3
pburke is offline pburke  Germany
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great - impossible to find using the regular search function there (look for Schottky and you will get a menu with no more than 100V as filter option...O)

That's the stuff I need, although 4am is a little steep for a CD player mod. the 1amp Crees were about $1.50 each, but they'll work fine.

Peter
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Old 8th August 2004, 06:10 PM   #4
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Is a PIV of 200 high enough for your project? If it is, you can use ON Semiconductors MBR20200CT. It's a TO220 case part with 2X 10 A. diodes, with a common cathode connection.
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Old 8th August 2004, 07:51 PM   #5
GaryB is offline GaryB  United States
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[
Quote:
Originally posted by pburke
That's the stuff I need, although 4am is a little steep for a CD player mod. the 1amp Crees were about $1.50 each, but they'll work fine.
Peter,
Why do you want SiC schottky diodes for a CD player mod? The motivation for using SiC is high voltage operation. If you don't need that then you can use conventional schottky diodes at a much more reasonable price.
Something like the IR 11DQ10 100v / 1.1a for $0.30 each.
Unless you're doing a tube output stage, in which case it might still make sense.
---Gary
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Old 8th August 2004, 10:12 PM   #6
pburke is offline pburke  Germany
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Quote:
Originally posted by GaryB
[

Peter,
Why do you want SiC schottky diodes for a CD player mod? The motivation for using SiC is high voltage operation. If you don't need that then you can use conventional schottky diodes at a much more reasonable price.
Something like the IR 11DQ10 100v / 1.1a for $0.30 each.
Unless you're doing a tube output stage, in which case it might still make sense.
---Gary

yeah, I was thinking the same thing. I last used the Cree 600V schottky's in a tube preamp, but there the voltage was 170V after the transformer. I guess here we have much lower voltages, so, yeah, the 100V should do it. I did read somewhere that you should do 2 times the circut voltage at least with these diodes, so I was trying to be on the safe side (since the Caps there are rated 50V, not the usual 25 or 16V). I'll have to measure the transformer leads, just to make sure, but 100 V should cover me. I don't have any schematics for this player (would cost me more than the player or all the mod parts), so I am flying half blind here. However, $3.90 or $0.30 is enough of a difference per diode to make me go and measure the thing ;-)

thanks for the replies - let's see if the thing does anything without a usable PCB connected (all the caps have already been removed :-))

Peter
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