Re: [TCML] SISG success

[mddeming@xxxxxxx]

Hi Finn,

I think the 275 is the highest voltage you can apply without danger of 
it turning on
and 350 is the highest the voltage could expect to see prior to 
turn-on.
But this "English as she is written" by them is not clear. ;^)

Matt D.


-----Original Message-----
From: Finn Hammer <f-h@xxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Tue, 14 Oct 2008 10:31 am
Subject: Re: [TCML] SISG success


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@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=2
0Littlefuse. > 
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 
 
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