fast bridge rectifiers

slogan2112 · 19th December 2003, 09:32 PM

Has anyone found/used fast recovery full bridge rectifiers in the 400V, 35A range?

millwood · 20th December 2003, 01:03 PM

why do you have to have a fast recovery bridge?

sam9 · 20th December 2003, 04:37 PM

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".

millwood · 20th December 2003, 05:15 PM

sam, how do you configure one pair of those CT type rectifiers into a bridge? I thought it was impossible.

sam9 · 20th December 2003, 09:29 PM

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.

peranders · 20th December 2003, 09:50 PM

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.

Magura · 20th December 2003, 10:03 PM

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.

Magura

millwood · 21st December 2003, 11:42 AM

Quote:

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,

K-amps · 21st December 2003, 01:43 PM

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?

slogan2112 · 22nd December 2003, 07:32 PM

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

19th December 2003, 09:32 PM	#1
slogan2112 diyAudio Member Join Date: Dec 2003 Location: austin, tx	fast bridge rectifiers Has anyone found/used fast recovery full bridge rectifiers in the 400V, 35A range?

20th December 2003, 10:03 PM	#7
Magura diyAudio Member Join Date: Oct 2003 Location: Denmark, Viborg	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. Magura __________________ Everything is possible....to do the impossible just takes a little while longer. www.class-a-labs.com

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20th December 2003, 01:03 PM	#2
millwood Account Disabled Join Date: Apr 2003 Location: US	why do you have to have a fast recovery bridge?

20th December 2003, 04:37 PM	#3
sam9 diyAudio Member Join Date: Jun 2002 Location: Left Coast	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".

20th December 2003, 05:15 PM	#4
millwood Account Disabled Join Date: Apr 2003 Location: US	sam, how do you configure one pair of those CT type rectifiers into a bridge? I thought it was impossible.

20th December 2003, 09:29 PM	#5
sam9 diyAudio Member Join Date: Jun 2002 Location: Left Coast	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.

21st December 2003, 01:43 PM	#9
K-amps diyAudio Member Join Date: Nov 2003 Location: Indiana	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?

22nd December 2003, 07:32 PM	#10
slogan2112 diyAudio Member Join Date: Dec 2003 Location: austin, tx	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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