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CV797 xenon filled shield-grid thyratron.

Size This valve measures 53x17mm overall and has a B7G base.
This valve has an indirectly heated cathode, a control grid, an anode, and an additional shield-grid electrode which almost completely surrounds the other electrodes.


Heater voltage 6.3V
Heater current 600mA
Max peak anode voltage 650V
Max working PIV 1300V
Max screen grid voltage -100V
Max control grid voltage -100V
Max peak cathode current 500mA
Max mean cathode current 100mA
Max surge cathode current (0.1s max duration) 10A
Anode voltage drop 8V

See also CV4018 which is a 'reliable' version

Pin Function
1 Control grid
2 Cathode
3 Heater
4 Heater
5 Auxiliary grid
6 Anode
7 Auxiliary grid