CX1154 Ceramic Thyratron

ABRIDGED DATA
Deuterium-filled tetrode thyratron with ceramic/metal envelope, featuring low jitter, firing time and drift. Suitable for switching high power at high pulse repetition rates or for switching long pulses. A reservoir operating from a separate heater supply is incorporated.
Peak forward anode voltage	40				kVmax
Peak anode current	3.0				kA max
Average anode current	2.0				A max

Electrical
Cathode (connected internally to one end of heater)	oxide coated
Cathode Heater voltage	6.3 ± 0.5	V
Cathode Heater current	22.5	A
Reservoir heater voltage (see note 1)	5.0	V
Reservoir heater current	7.0	A
Tube heating time (minimum)	15	min
Anode to grid 2 capacitance	15 to 20	pF

Mechanical
Seated height	165.1 mm max
Clearance required below mounting flange	38.1 mm max
Overall diameter (mounting flange)	111.1 mm nom
Net weight	1.8 kg (4 pounds) approx
Mounting position (see note 2)	any
Tube connections	see outline
Cooling	liquid or forced-air

NOTES

1. The reservoir heater must be decoupled with a suitable capacitor to avoid damage by spike voltages.  The recommended reservoir heater voltage for each individual tube is stamped on the tube envelope. This recommended value is determined for hold-off at the maximum anode voltage under DC conditions.
For lower voltages and modulator operation the reservoir heater voltage should be increased to a
value consistent with voltage hold-off at the operating level. Maximum reservoir voltage (i.e. maximum gas pressure in the tube) is one prerequisite for maximum thyratron life. The reservoir voltage should be stabilised to +0.05 V.

 

2. The tube must be fitted using its mounting flange.

 

OUTLINE(All dimensions without limits are nominal)