Re: tReplacement Diodes for G-05 / Microsemi info

Well, like I said, if the originals are 600 and 1000 volts and the replacement
is 1500 volts there shouldn't be any problems. What you DON'T want to do is put
a slow rectifier like a 1N4007 in there. Though one guy on the group here had a
1N400x series part work as a damper (not a good idea, but a damper doesn't need
to turn off as fast), using one of these for rectification on a flyback winding
demands a fast turn-off device, which the ECG/NTE/SK part numbers given are.

John Mehrtens wrote:

> Does anyone know the specs of the original parts? Or are the tolerances of
> the ECG/NTE/SK replacements good enough to use without apprehension? I've
> had very bad luck with generic replacements in some equipment I've worked
> on, while most circuits take well to the replacements (ie ECG123).
>
> Microsemi has a great part-matching service if we know the original part
> specs. Also, they may have diodes with better current handling capacity.
>
> If the generic replacements are good enough, that'd be great too.
>
> -John
>
> Rodger Boots said,
>
> ] BY208-600 & BY208-1000 both cross to NTE558, ECG558, SK3998 which is a
> 1500
> ] volt fast-recovery 1 amp rectifier.
> ] The -600 stood for 600 volts and the -1000 stood for 1000 volts.
>
> John Mehrtens wrote:
>
> > I hate to say I don't have a cross-reference for Atari's diodes
> (BY-208-600
> > and BY-208-1000), though I did get this info about Micro Quality Semi /
> > Microsemi. It seems that according to their site, if Varo, Inc ever made
> > the diodes, they're still making it because of their "no product
> > obsolescense" policy. This is a GOOD thing!!
> >
> > Now if we can figure out the properties of the two HV diodes, someone at
> MQS
> > can cross-reference it for us. I have a feeling that the "Mike" mentioned
> > is the CEO of MQS.
>
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