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Old 19th December 2003, 09:32 PM   #1
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Default fast bridge rectifiers

Has anyone found/used fast recovery full bridge rectifiers in the 400V, 35A range?
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Old 20th December 2003, 01:03 PM   #2
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why do you have to have a fast recovery bridge?
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Old 20th December 2003, 04:37 PM   #3
sam9 is offline sam9  United States
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Look at: http://www.edidiodes.com/pdf/Bridges/xPIR.pdf

also www.diodes.com, a pair of MURB161OCT configured into a bridge might work for you. Or a a pair of Schottky rectifier assemblies SBG3030CT. Spice models are available so you could "try before you buy".
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Old 20th December 2003, 05:15 PM   #4
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sam, how do you configure one pair of those CT type rectifiers into a bridge? I thought it was impossible.
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Old 20th December 2003, 09:29 PM   #5
sam9 is offline sam9  United States
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Millwood, The answer is you can't. All this Christmas eggnog has addled my brain. Diodes Inc only has common cathode configurations. You would need to match one of those with a common anode configuration. I have seen datasheets from someone else where you can order them that way by changing a suffix. Anyway, just buying a super/ultra fasr bridge would be easier. Edidiodes does have those.

The REAL problem is finding a distributor that stocks any of them, or talking the manufacturer out of samples.

Of course, it may all depend on what the original poster wants one for. Unless it is something very, very special I'd bet you can get what you are looking for just by snubbing them. The definitive dyi article on that seems to be the one a www.hagtech.com.
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Old 20th December 2003, 09:50 PM   #6
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Quote:
Originally posted by millwood
sam, how do you configure one pair of those CT type rectifiers into a bridge? I thought it was impossible.
What about using 4 of them and connect them in parallel internally? I'll guess that the current sharing won't be perfect but rather useful anyway.
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Old 20th December 2003, 10:03 PM   #7
Magura is offline Magura  Denmark
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Im gonna try making a schottky bridge rectifier by paralelling the units and using 4, mount the whole thing on a copper plate and cast them in heat conductive epoxy...should be a good solution and easy to mount/ replace in case of failure, since its one unit.

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Old 21st December 2003, 11:42 AM   #8
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Originally posted by sam9
Millwood, The answer is you can't.

thanks, Sam9 for the clarification. I am quite surprised why companies make those common cathode diode "modules" given that most of those modules are used in SmPS.

only if they also make matching common anode modules,
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Old 21st December 2003, 01:43 PM   #9
K-amps is offline K-amps  United States
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Anyone used the RURG8060 by fairchild?

80Amp 600PIV ratings discrete diodes.
Fast and soft recovery.
800Amp peaks.

I want to use these for a 800watt per channle amp?

ideas?
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Old 22nd December 2003, 07:32 PM   #10
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I was just curious, the full bridge makes connections easier. They will be used on the secondary of the power transformer so schottky's don't have the voltage I need.

I did find one supplier but I know nothing about them.
http://www.diotec-usa.com/GUIDE3.html
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