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From: "Harry Dellamano"
Subject: Re: Two diodes in series to double PIV rating - is that a "no-no"?
Date: Wed, 20 Nov 2002 18:32:04 -0800
Organization: Posted via Supernews, http://www.supernews.com
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"Mike Engelhardt" wrote in message
> If the diodes are "avalanche grade" then you can
> get away with it. An avalanche grade diode is supposed
> to be able to zener instead of destrucituvely breaking
> down in order to equalize the reverse drop in a diode
> stack. Very high voltage diodes are a bunch of avalanche
> grade diodes in series. That's why they can have a
> reverse rating of several to many kilovolts but also have
> a forward drop of several volts.
> Every year it seems like there's fewer sources for
> high voltage devices. Varo used to sell avalanche
> grade diodes but went out of business about 5 years
> ago. I'd check maybe Semtech.
> Otherwise, take the well-placed advice of the first
> two people who followed up.
Hey Mike, great stuff but your companies are out of date, try this one.
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