CX1191D Deuterium Thyratron

ABRIDGED DATA
Deuterium-filled tetrode thyratron of ruggedised construction,suitable for use in airborne or mobile military radar systems. It isused for switching peak powers up to 8.0 MW at high repetition rates under a wide range of operating conditions. It has arugged, internally connected reservoir. Samples are subjected to extensive environmental test procedures including vibration at 2g from 50 to 200 Hz.
Peak forward anode voltage	35				kVmax
Peak anode current	500				A max
Average anode current	0.5				A max
Electrical			Mechanical
Cathode (connected internally to mid-point of heater)	oxide coated		Overall length	223.8 mm max
Heater voltage	6.3 ± 7 1/2%	V	Base	B4D, bayonet
Heater current	12.5	A	Net weight	340 g approx
Tube heating time (minimum) (see note 1)	5.0	min	Overall diameter	65.1 mm max
Inter-electrode capacitances (approximate):			Mounting position (see note 2)	any
anode to grid 2 (grid 1 and cathode not connected)	9.0	pF	Top cap connector	BS448-CT3
anode to grid 1 (grid 2 and cathode not connected)	4.5		Cooling (see note 3)	natural
anode to cathode (grid 1 and grid 2 not connected)	18

NOTES

1. The maximum permissible peak forward voltage for instantaneous starting is 20 kV and there must be no overshoot. For single-shot and crowbar applications, each tube is tested to withstand 35 kV DC at 6.3 V heater voltage for 10 minutes, with 100 mA grid 1 drive current and 7100 V grid 2 bias.

2. Clamping is only permissible by the base.

3. In some applications, air cooling may be necessary to prevent the base temperature from exceeding 200

℃.

OUTLINE(All dimensions without limits are nominal)