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5948

Hydrogen-filled zero-bias pulse thyratron for very-high-power radar modulators. Its massive heater and fast gas discharge switch extreme pulse energy.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 29 A

Description

The 5948 is a three-electrode hydrogen-filled zero-bias thyratron designed to generate high-power, high-voltage pulses in radar modulators, with an internal hydrogen reservoir and pulse capability around 12 MW.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: -
Nominal heater voltage: 6.3 V
Nominal heater current: 29 A
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Thyratron

X-ray radiationInterelectrode capacitances

Max plate voltage: 25000 V
Max cathode current: 1000 A

Thyratron pulse ratings promoted where semantically compatible; trigger, delay, jitter, reservoir and current-rate data retained as parameters.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1950 General Electric Transmitting Types

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Characteristic

HeaterOrFilamentVoltage
6.3 V
HeaterOrFilamentCurrent
30 A

Other

Maximum Peak Anode Voltage
25000 V
Pulsed

Data set 02

1961 Tung Sol

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

Peak Anode Voltage Forward
25 kV
Peak Cathode Current
1000 A
PulseService
PulsePower
12 MW
RadarModulator

Data set 03

1962 ITT

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Characteristic

Heater current
25 A to 33 A
Heater voltage nominal
6.3 V

Other

Minimum heating time
15 min
Maximum peak forward anode voltage
25000 V
Maximum peak inverse anode voltage
25000 V
Maximum peak anode current
1000 A
Maximum average anode current
1 A
Maximum RMS anode current
31.8 A
Maximum anode current rate of rise
5000 A/us
Maximum peak inverse trigger voltage
650 V
Maximum anode delay time
1 us
Maximum anode delay-time drift
0.25 us
Initial maximum time jitter
0.01 us

Data set 04

1966 Tung Sol Electronic Tubes 4 of 4

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

Peak forward anode voltage
25 kV
PulseService
Peak inverse anode voltage
25 kV
PulseService
Peak cathode current
1000 A
PulseService
Average cathode current
1 A
PulseService
RMS cathode current
33 A
PulseService
Peak grid voltage
1500 V
PulseService
Current rate of rise
500 A/us
PulseService
Anode delay time
1 us
PulseService

Characteristic

Heater current bogey
29 A
WholeTube
Cathode heating time minimum
15 min
WholeTube
Hydrogen reservoir present
TRUE
WholeTube
Pulse power capability
12 MW
RadarModulator

Data set 05

1982 Toshiba

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

Peak Anode Current
1000 A
Average Anode Current
1 A
Minimum DC Supply Voltage
5000 V
Maximum Rate of Rise of Anode Current
5000 A/us
Pulse Repetition Rate
1500 pps
Pulse Duration
6 us