> Does P equal I^2*R, Tom?
Yes, actually, it does!
> I thought P equals E*I = 4.48w.
Also correct!
> >You know diodes can run pretty hot and remain safe.
>
> Zener case temp is 25ºC/77ºF-max at rated dissipation.
>
Another point to ponder is that Zener devices have a TCZV which
makes them drift quite a lot. That applies to "zeners" having a Vz of
<5.6V. Devices having a Vz of >6.2V aren't really "zeners," they're
low-voltage avalanche diodes selected for specific avalanche voltages.
Those also have a TCBV, and it's just the opposite of zeners. Around 5.6V,
the TCZ or TCBV is usually zero, so this is a very good voltage to use, when
possible. It's about as stable as a zener gets.
-WB2WIK/6
> - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
> www.vcnet.com/measures.
> end
>
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