[TCML] SISG success

[Finn Hammer]

Terry, Jim, Bert, Bart, all

I had a look at the new ones, and stumbeled on 2 specifications that I 
just cannot get to make sence together. To me they are contradictory, 
and perhaps the best reason why it`s not _me_ that is going to call 
Littlefuse.

On this datasheet:
http://www.littelfuse.com/part/P3100AD.html
which describes a possible substitute to the old ones, there are 2 
voltages described:

Vdrm1 voltage 275V
"Peak Off-state Voltage
Maximum voltage that can be applied while maintaining off state."

Then there is:

Vs at Vdrm1 voltage 350V
"Switching Voltage
Maximum voltage prior to switching to on state."

The way I read it, both voltages describe the voltage which determines 
the point where the device turns on.
How can thay be so different?

Cheers, Finn Hammer


piranha skrev:
> Hi,
>
> The 300V K3000F1 SIDACs are no longer available from Littlefuse.  
> However they are directly replaced now by their new product lines for 
> such things.  They also now have much higher voltages and such 
> available.  Somebody needs to call Littlefuse's engineering reps up 
> and get all of that figured out.  "I" don't have time, but there are 
> much newer and better SIDACs now that need to be looked into!
>
> Best Regards,
>
>    Terry