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Specialized - Thyratron ·Thyratron

632B

Gas-filled grid-controlled thyratron for controlled rectifier, relay, motor-control, industrial switching, or pulse service.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: IO
Base pins: 8
Nominal heater: 5 V / 5 A

Description

Mercury-vapor tetrode thyratron for ignitor firing and grid-controlled rectifier service.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: IO
Base pins: 8
Nominal heater voltage: 5 V
Nominal heater current: 5 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: 1500 V
Max cathode current: 30 A
Rectifier forward voltage drop: 12 V

Thyratron section; peak/average current, inverse voltage, timing, and gas/mercury 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

1963 Amperex Condensed

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Characteristic

Filament heating time
300 s
MercuryVaporThyratron
Tube voltage drop
12 V
MercuryVaporThyratron
Deionization time
1000 µs
MercuryVaporThyratron

Other

Peak forward voltage maximum
1500 V
MercuryVaporThyratron
Peak inverse voltage maximum
1500 V
MercuryVaporThyratron
Peak anode current maximum
30 A
MercuryVaporThyratron
Average anode current maximum
5 A
MercuryVaporThyratron
Maximum grid voltage
-300 V
MercuryVaporThyratron
Recommended mercury temperature range
+45 to +50 °C
MercuryVaporThyratron
Application
Ignitor firing and grid-controlled rectifier service
Section1

Data set 02

1971 RCA HB3 Binder 2 of 7

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

Peak forward anode voltage
1500 V
Peak inverse anode voltage
1500 V
Peak cathode/anode current
30 A
Average cathode/anode current
2.5 A
Fault or surge current
150 A
ShortDuration
Ambient temperature range
40 to 80 C condensed-mercury
Heater voltage
5 V
Heater current
5 A
Peak grid No.2 voltage
-300 V
Peak grid No.1 voltage
-1000 V

Characteristic

Ionization time
10 us
Approximate
Deionization time
1000 us
Approximate
Anode voltage drop
12 V
Conducting
Minimum heating time
5 min
BeforeConduction

Construction

Gas fill
Mercury vapor

Capacitance

Grid-to-anode capacitance
0.04 pF
Approximate
Grid No.2-to-anode capacitance
3 pF