Wouter van Ooijen wrote:

>> But they actually specify the maximum forward voltage (at a certain
>> current) in maximum ratings sections.
> 
> I checked http://www.fairchildsemi.com/ds/1N/1N4148.pdf, it does not
> specify this. Only the maximum current.

I meant this to mean "in some maximum ratings sections", like for example
for the Diodes Inc S1A family. (However, this is a section "Maximum Ratings
and Electrical Characteristics", which doesn't make it clear what kind of
spec this is.)

>> We probably could conclude from this that going over this in a dynamic
>> situation takes the diode out of the specified operating range.
> 
> The 'this' is missing, so no conclusion can be drawn...

The 'this' was meant to be the fact that some datasheets seem to specify a
maximum forward voltage. But maybe not... the one I found is not really
clear about what kind of spec this is.

> I might be a sloppy reader, but I can't even find a switch-on time
> specification, which would be the root issue here. So again, no data =>
> no conclusions :(

I think what you mean is called "Reverse Recovery Time" and is 4 ns at 10
mA forward current in this datasheet.

Gerhard

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