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.
>
>  
>
>>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...
>
>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 :(
>  
>
The guaranteed switching time for the 1N4148 is 4 nS. The switching time 
for a unidirectional TVS
is less than 1 pS; I calculate that to be 4000 times faster.

--Bob


>Wouter van Ooijen
>
>-- -------------------------------------------
>Van Ooijen Technische Informatica: www.voti.nl
>consultancy, development, PICmicro products
>docent Hogeschool van Utrecht: www.voti.nl/hvu
> 
>
>  
>


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