hi...

...of coarse lots of specifics but to have a series/parallel banks of to220 types as a fast high voltage switch

 

.... TYN1225's ( 3 in series for 3600v max ) x 7banks total 21 devices

 

what product? as a ballpark value use few microseconds.

 

thank you..no product, want to try to use as a spark gap replacement--if i hit the gate pretty hard, the series stack of 3 is expected to be around 200-300 peak amps and discharging a few hundred pf-- hoping it to be sub microsecond
...probably have to build/ test it but thought to post/ ask here

...it is for exciting a transverse discharge laser

 

GE’s SCR Manual addresses this concern exactly: which is how fast the SCR reaches its minimum holding current, the forward conduction voltage drop and the actual gate sensitivity.
The subject matter is complex enough for the book to warrant a full chapter. 30 pages total.

EDIT, there are 2kA continuous conducting SCRs available. You don’t require to go through electrical hell attempting to parallel several devices.

 

...yes, thank you ( 1972 print )- the current squared/time for damage apears to be thermal and the low energies involved and the parasitic resistance should prevent this i think- in the application intended ( hopefully to get nitrogen to lase ) it should be at least fast enough for a co2 laser ??

 

..this link has some solid state switch with a nitrogen laser i think they are indeed series/ parallel scr's