At 02:49 PM 2/8/2006 -0700, you wrote:

> >>Ton should be about 5 nsec for 1N4148.
> >>
> >>
> >
> >'should' is not a valid input for design. Can you locate that parameter
> >in the (any?) datasheet?
> >
> >Wouter van Ooijen
> >
> >
> >
> >
>http://www.vishay.com/docs/85521/85521.pdf
>
>Shows time to "reverse its polarity", same thing as switching speed.
>
>--Bob

trr is reverse recovery time (time to switch "off").

This Philips datasheet shows the forward recovery characteristic in terms of
overshoot voltage Vfr:

http://ronja.twibright.com/datasheets/1N4148_1N4448_5.pdf


>Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
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