Specialized - Thyratron vacuum tubes

Rectifier

Directly heated mercury-vapor grid-controlled rectifier combining rectification with control-grid switching. It is intended for regulated industrial power conversion where substantial DC must be electronically controlled.

Base

Not recorded

Socket

MEDIUM4BAYONET

Heater

Not recorded

Sections

1

Thyratron

Gas-filled control triode and thyratron with published operating and limiting ratings. It provides grid-controlled discharge for electronic power switching.

Base

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Heater

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1

Thyratron

Directly heated xenon-filled triode thyratron for stable arc switching over a wide ambient-temperature range, suitable for demanding control equipment.

Base

Not recorded

Socket

Not recorded

Heater

25 V

Sections

1

Thyratron

Higher-current mercury-vapor thyratron for stepless voltage-output and DC motor control. Its heavy filament supports substantial controlled power.

Base

Not recorded

Socket

Not recorded

Heater

5 V

Sections

1

Thyratron

Inert-gas triode thyratron with negative-control characteristic for industrial control and switching. Grid action initiates controlled gas conduction.

Base

Not recorded

Socket

Not recorded

Heater

4 V

Sections

1

Thyratron

Mercury-vapor thyratron for high-voltage controlled rectification and industrial switching. Its heavy filament supports substantial grid-triggered current.

Base

Not recorded

Socket

Not recorded

Heater

5 V

Sections

1

Triode

Mercury-vapor thyratron for industrial switching and control. Grid triggering initiates low-drop mercury-discharge conduction.

Base

Not recorded

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Not recorded

Heater

Not recorded

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1

Triode

Mercury-vapor thyratron for industrial switching and control. Controlled gas discharge provides reliable power switching.

Base

Not recorded

Socket

Not recorded

Heater

2.5 V

Sections

1

Triode

Inert-gas and mercury-vapor thyratron for industrial switching and control. Grid triggering provides controlled high-current discharge.

Base

Not recorded

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Not recorded

Heater

Not recorded

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1

Triode

Inert-gas and mercury-vapor thyratron for industrial switching and control. Its heavy heater supports substantial controlled current.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Triode

Inert-gas and mercury-vapor thyratron for industrial switching and control. Its heavy heater supports substantial controlled discharge.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Tetrode

Inert-gas tetrode thyratron for industrial switching and control. Grid-triggered gas discharge provides electronic power control.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Triode

Inert-gas and mercury-vapor thyratron for industrial switching and control. Controlled discharge provides low-drop power switching.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Triode

Inert-gas thyratron for industrial switching and control. Its heavy heater supports substantial grid-triggered discharge current.

Base

Not recorded

Socket

Not recorded

Heater

2.5 V

Sections

1

Triode

Inert-gas thyratron designed for industrial switching and control, using grid-triggered gas conduction for power-control applications.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Triode

Inert-gas thyratron designed for industrial switching and control, using grid-triggered gas conduction for power-control applications.

Base

Not recorded

Socket

MEDIUM4BAYONET

Heater

Not recorded

Sections

1

Thyratron

Hot-cathode gas-filled thyratron for electronic control, timing, relay, and power-control service, providing triggered conduction for industrial switching applications.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Tetrode

Inert-gas thyratron designed for industrial switching and control, using grid-triggered gas conduction for power-control applications.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Thyratron

Cold-cathode inert-gas triode designed for relay, timing, and control service, providing heaterless gas-discharge switching in industrial and electronic control circuits.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

Sections

1

Thyratron

Cold-cathode inert-gas triode with starter electrode for switching and discharge-control service, providing heaterless triggered operation in control circuits.

Base

B7G

Socket

Not recorded

Heater

Not recorded

Sections

1

Thyratron

Indirectly heated mercury-vapor thyratron used as a high-voltage half-wave controlled rectifier and as a switching and control tube in industrial regulating equipment.

Base

Not recorded

Socket

Not recorded

Heater

5 V

Sections

1

Thyratron

Directly heated inert-gas and mercury-vapor thyratron for high-current controlled-rectifier switching service in industrial power-control equipment.

Base

A4-10

Socket

Not recorded

Heater

2.5 V

Sections

1

Thyratron

Indirectly heated inert-gas tetrode thyratron with control and screen grids, designed for grid-controlled switching and power-conduction applications.

Base

B6-3

Socket

Not recorded

Heater

6.3 V

Sections

1

Thyratron

Directly heated inert-gas triode thyratron, issued as a preliminary-data type for high-current switching and controlled-conduction service.

Base

A4-18

Socket

SUPERJUMBO4B

Heater

2.5 V

Sections

1

Thyratron

Argon-filled cold-cathode tetrode designed as a stroboscopic photographic light source, producing intense short-duration flashes through controlled gas discharge.

Base

InternationalOctal

Socket

IO

Heater

Not recorded

Sections

1

Thyratron

Radiation-cooled mercury-vapor tetrode thyratron for controlled switching and power-conversion service in industrial electronic equipment.

Base

Not recorded

Socket

Not recorded

Heater

5 V

Sections

1

Thyratron

Heavy-duty mercury-vapor thyratron designed for motor control and AC welder control, providing grid-triggered switching of substantial industrial currents.

Base

Not recorded

Socket

Not recorded

Heater

5 V

Sections

1

Thyratron

Very-high-current heavy-duty mercury-vapor thyratron for motor and AC welder control, designed to switch exceptionally large industrial currents.

Base

Not recorded

Socket

Not recorded

Heater

5 V

Sections

1

Thyratron

Hydrogen thyratron, co-designated 6268/AX-9911, designed for high-pulse-current switching in pulse network and other demanding pulsed-power applications.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Thyratron

Hydrogen thyratron designed for high-speed pulse switching, with published ratings and operating characteristics for substantial pulsed-power service.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Thyratron

Mercury-vapor thyratron designed for high-voltage industrial control applications, providing grid-triggered power switching in substantial regulating and conversion equipment.

Base

Not recorded

Socket

Not recorded

Heater

25 V

Sections

1

Thyratron

Directly heated xenon negative-control thyratron with very high peak and average current capability for grid-controlled rectifier and pulse-power applications.

Base

Not recorded

Socket

Not recorded

Heater

2.5 V

Sections

1

Thyratron

Directly heated xenon negative-control thyratron designed for grid-controlled rectifier service, combining high inverse-voltage capability with controlled ampere-level conduction.

Base

4D

Socket

Not recorded

Heater

2.5 V

Sections

1

Thyratron

Xenon-filled three-electrode thyratron designed for relay, motor-control, and ignitor-firing service, providing triggered conduction for industrial control circuits.

Base

4CF

Socket

Not recorded

Heater

2.5 V

Sections

1

Thyratron

Xenon-filled three-electrode thyratron designed for reliable wide-temperature control service, providing stable grid-triggered switching across demanding environmental conditions.

Base

4CF

Socket

Not recorded

Heater

2.5 V

Sections

1

Thyratron

Long-envelope directly heated xenon negative-control thyratron with mid-tapped filament for high-voltage, high-current grid-controlled rectifier service.

Base

Not recorded

Socket

Not recorded

Heater

2.5 V

Sections

1

Thyratron

Grid-controlled xenon thyratron documented by Amperex for controlled switching and power-conduction service, with published operating ratings and characteristics.

Base

4BZ

Socket

Not recorded

Heater

2.5 V

Sections

1

Thyratron

Gas-filled high-current thyratron triode designed for applications requiring precise control of substantial power conduction.

Base

4BZ

Socket

Not recorded

Heater

2.5 V

Sections

1

Thyratron

Xenon-gas-filled power-control thyratron, co-designated C6J/L and WL-7321, designed for high-current grid-controlled switching and rectifier service.

Base

Not recorded

Socket

Not recorded

Heater

2.5 V

Sections

1

Thyratron

Zero-bias hydrogen thyratron designed specifically for crowbar protection circuits, capable of roughly 800 A peak current at approximately 18 kV.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Thyratron

Zero-bias hydrogen crowbar thyratron for high-voltage protection, capable of approximately 1.5 kA peak current at around 18 kV.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Thyratron

Zero-bias hydrogen crowbar thyratron for high-voltage protection, capable of approximately 2.5 kA peak current at around 25 kV.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Thyratron

National Electronics thyratron intended for control, timing, ignitor-firing, and related industrial switching service, with published peak-voltage and current ratings.

Base

Not recorded

Socket

Not recorded

Heater

2.3 V

Sections

1

Thyratron

Subminiature directly heated thyratron for compact control and switching applications. Available database evidence confirms the thyratron function but does not support a narrower functional assignment.

Base

Not recorded

Socket

SUBMINIATURE8

Heater

1.25 V

Sections

1

Thyratron

Directly heated subminiature thyratron for self-quenching super-regenerative detection and remote-control relay service around 27.225 MHz.

Base

Not recorded

Socket

SUBMINIATURE8

Heater

1.4 V

Sections

1

Thyratron

Cold-cathode gas tetrode for relay or indicator service, providing heaterless controlled gas-discharge switching.

Base

Not recorded

Socket

Not recorded

Heater

Not recorded

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1

Thyratron

Inert-gas triode thyratron for motor-speed and welding-control circuits, directly equivalent to the GL5545.

Base

Not recorded

Socket

Not recorded

Heater

2.5 V

Sections

1

Thyratron

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

Base

B7D

Socket

Not recorded

Heater

6.3 V

Sections

1