200V 50A Fast Recovery POWER Rectifiers - diyAudio
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Old 16th February 2004, 01:47 AM   #1
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Default 200V 50A Fast Recovery POWER Rectifiers

Moderators, don't beat me up too much for this but I found this on ebay today. I know there will be alot of aleph-x's being built soon and hope this helps some of the builders.


STMicroelectronics BYV52-200 200V 50A High Efficiency Fast Recovery Rectifier Diodes in SOT-93 Package $1.00 ea.

http://cgi.ebay.com/ws/eBayISAPI.dll...&category=7287
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Old 17th February 2004, 12:00 PM   #2
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Default Kind?

Are these the Schottky type of rectifiers? Only 3 pins config.

BQ
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Old 17th February 2004, 12:15 PM   #3
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The previous auction has expired so the new one is at: http://cgi.ebay.com/ws/eBayISAPI.dll...tem=2596844068

The specifications for the diodes can be found at: http://www.st.com/stonline/books/pdf/docs/2963.pdf

I am not the seller. I spotted them and thought they would be of interest.
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Old 17th February 2004, 01:00 PM   #4
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Would these be good for amplifier PSU's oe would they generate gobs of RF?

I like the 500 amp peak burst value...

-K
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Old 17th February 2004, 03:02 PM   #5
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I believe one of their suggested applications is power supplies.
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Old 17th February 2004, 03:20 PM   #6
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If you put some snubber caps accross the diodes this will help reduce any HF junk that is created by the switching.

You could have a look at this thread here (can I possibly plug this any more? ) if you are intrested in using these diodes for a power supply (They are very close to the BYW99W-200's that are now used in the PASS equipment I believe).
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Old 17th February 2004, 04:13 PM   #7
K-amps is offline K-amps  United States
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Quote:
Originally posted by kilowattski
I believe one of their suggested applications is power supplies.

Guy, SMPS are also power supplies and for those, I guess ultra fast recovery types are needed but for low tech Linear Amplifier PSU's (Toroid-Diode-Cap combo) I have read that the ultra fast types are a bad idea and that "Soft recovery" types are in order.

So if I understand you, these are good for Power amp applications as well?? And bigparsnip says that using snubbing caps will make them as good as any other .... correct?
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Old 17th February 2004, 04:15 PM   #8
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If you have a look in the link below you should find an answer to your questions of sorts (or at least on opinion from someone who is rather well respected round here.

high speed diode to-220 package for Aleph-x
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