Medical Parts/Thyratron 2012.06.15 14:25

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)

 

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