Specialized tube type
Specialized - Thyratron vacuum tubes
Specialized - Thyratron records in Tube Tinker cover 571 tube designations, including 1,229 preserved original datasheets. Compare bases, sockets, heater requirements, construction, exact variations, and directional replacement options.
- Tube records
- 571
- Original datasheets
- 1,229
- Variation families
- 42
- Tubes with alternatives
- 23
About Specialized - Thyratron tubes
If the tube is described as a thyratron then apply this type.
Electrical range
- Nominal heater voltage
- 1.25–220 V
- Nominal heater current
- 0.05–190 A
Common specialized - thyratron characteristics
These are the most frequently recorded attributes among tubes in this category.
Bases
- DOWN13
- 4BZ7
- A4-107
- 4CF4
- 4D4
- B7G4
- B7D3
- 3G2
Sockets
- UX435
- IO27
- B9A23
- B7G19
- A10
- SPECIAL38
- B4B7
- SJ45
Constructions
- Thyratron519
- Triode36
- Rectifier9
- Tetrode7
Specialized - Thyratron tube list
Page 1 of 12
105 Thyratron
Mercury-vapor tetrode thyratron for high-current grid-controlled switching. Its control grid triggers low-drop gas conduction for industrial power control.
- Base
- Not recorded
- Socket
- UX4
- Heater
- 5 V
- Sections
- 1
1257 Thyratron
Heavy-duty thyratron with a very high heater demand for substantial controlled-current switching. Available source data establish thyratron service without supporting a narrower gas classification.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 6.3 V
- Sections
- 1
1258 Thyratron
Zero-bias miniature hydrogen thyratron for low-power radar pulse-modulator service. Fast gas switching provides rapid, repeatable high-voltage pulses.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 6.3 V
- Sections
- 1
12QR205 Thyratron
Mercury-vapor thyratron for high-voltage controlled rectification and industrial switching. Grid triggering controls substantial gas-discharge current with low forward drop.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 5 V
- Sections
- 1
15QR40 Thyratron
Mercury-vapor thyratron for high-voltage controlled rectification and industrial switching. Its heavy heater and grid control support substantial power conversion.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 5 V
- Sections
- 1
1701 Thyratron
Grid-controlled gas thyratron for controlled rectification and switching. Published ratings support substantial electronic power-control service.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 2.5 V
- Sections
- 1
1754 Thyratron
Hydrogen-reservoir grid-controlled thyratron for high-repetition-rate, high-current, high-voltage pulse service. Reservoir control maintains suitable gas pressure for fast switching.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 6.3 V
- Sections
- 1
1907 Thyratron
Heavy-duty hydrogen thyratron with built-in reservoir for high-voltage pulsed switching. Its construction supports rapid, high-current pulse discharge.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 6.3 V
- Sections
- 1
1G32P Thyratron
Hydrogen thyratron for high-speed pulse switching. Gas discharge provides rapid high-current conduction for pulse-power and modulator circuits.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 6.3 V
- Sections
- 1
1G35P Thyratron
Hydrogen thyratron for high-speed pulse switching. Its controlled gas discharge supports rapid high-current pulse-power operation.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 6.3 V
- Sections
- 1
1G45P Thyratron
Hydrogen thyratron for high-speed pulse-switching service. Controlled gas discharge provides fast, repeatable conduction in pulse-power circuits.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 6.3 V
- Sections
- 1
2050 Thyratron
Gas-filled thyratron for relay and grid-controlled rectifier service. Grid triggering initiates controlled gas conduction for switching and power-control circuits.
- Base
- 8J
- Socket
- IO
- Heater
- 6.3 V
- Sections
- 1
2050A Thyratron
Gas-filled thyratron for relay and grid-controlled rectifier service. Its control grid triggers gas discharge for electronic switching.
- Base
- Not recorded
- Socket
- IO
- Heater
- 6.3 V
- Sections
- 1
2050F Thyratron
2050-family gas-filled thyratron for relay and controlled-switching service. Available source material confirms the family function without supporting a narrower description.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 6.3 V
- Sections
- 1
2050W Thyratron
Ruggedized xenon-filled four-electrode thyratron, electrically equivalent to 2050, for relay and controlled-rectifier service in demanding equipment.
- Base
- Not recorded
- Socket
- IO
- Heater
- 6.3 V
- Sections
- 1
2051 Thyratron
Gas tetrode thyratron for relay service. Grid-controlled gas discharge provides abrupt electronic switching for control circuits.
- Base
- 8J
- Socket
- Not recorded
- Heater
- 6.3 V
- Sections
- 1
20A2 Tetrode
Gas-filled tetrode used as a grid-controlled rectifier. Control-grid triggering initiates gas conduction for electronically controlled power conversion.
- Base
- Not recorded
- Socket
- IO
- Heater
- 6.3 V
- Sections
- 1
20A3 Tetrode
Gas tetrode thyratron for relay service. Controlled discharge provides heater-driven electronic switching and relay action.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 6.3 V
- Sections
- 1
20TC4 Thyratron
Thyratron for electronic switching and controlled conduction. Available manufacturer material confirms thyratron service without supporting a narrower functional description.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 6.3 V
- Sections
- 1
21A1 Tetrode
Gas-filled tetrode half-wave grid-controlled rectifier designed for high-altitude service. Grid triggering provides controlled gas conduction under reduced atmospheric pressure.
- Base
- Not recorded
- Socket
- IO
- Heater
- 6.3 V
- Sections
- 1
21B12 Triode
Directly heated inert-gas thyratron for welding and motor-control service. Controlled gas discharge switches substantial industrial currents.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 2.5 V
- Sections
- 1
21B13 Triode
Heavy-current thyratron for industrial controlled-power service. Published ratings identify substantial grid-controlled gas-discharge switching capability.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 5 V
- Sections
- 1
21N12 Triode
Mercury-vapor thyratron for power supplies and welding equipment. Grid-controlled mercury discharge provides low-drop switching of substantial industrial current.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 5 V
- Sections
- 1
21N13 Triode
Mercury-vapor thyratron for heavy industrial power control. Grid triggering initiates low-drop gas conduction for substantial current switching.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 5 V
- Sections
- 1
21N14 Triode
Mercury-vapor thyratron for heavy industrial controlled-power service. Its grid initiates low-drop gas conduction for substantial current switching.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 5 V
- Sections
- 1
21N15 Triode
Mercury-vapor thyratron for industrial welding and motor-control switching, using grid control of a high-current gas discharge.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 3 V
- Sections
- 1
21TE31 Thyratron
Xenon-filled tetrode thyratron for industrial switching and regulating circuits, including controlled-rectifier and sawtooth-generator service.
- Base
- Not recorded
- Socket
- B7G
- Heater
- 6.3 V
- Sections
- 1
256A Thyratron
Argon-filled heater-cathode thyratron for controlled switching, with millisecond-class deionization and moderate-current operation.
- Base
- Not recorded
- Socket
- UX4
- Heater
- 2.3 V
- Sections
- 1
269A Thyratron
Argon-filled grid-controlled rectifier for relay and trigger circuits, controlled-frequency oscillators, level indication, and sweep generation.
- Base
- Not recorded
- Socket
- MEDIUM5
- Heater
- 2.2 V
- Sections
- 1
277A Thyratron
Gas-filled grid-controlled thyratron for switching, controlled-rectifier, relay, motor-control, oscillator, or pulse service as documented by the manufacturer.
- Base
- Not recorded
- Socket
- B5
- Heater
- 5 V
- Sections
- 1
2A4G Thyratron
Gas-filled grid-controlled thyratron for switching, controlled-rectifier, relay, motor-control, oscillator, or pulse service as documented by the manufacturer.
- Base
- 5S
- Socket
- IO
- Heater
- 2.5 V
- Sections
- 1
2B4 Thyratron
Gas-filled grid-controlled thyratron for switching, controlled-rectifier, relay, motor-control, oscillator, or pulse service as documented by the manufacturer.
- Base
- 5A
- Socket
- IO
- Heater
- 2.5 V
- Sections
- 1
2C33RX233A Thyratron
Gas-filled trigger-service thyratron triode.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 2.5 V
- Sections
- 1
2C4 Thyratron
Gas-filled grid-controlled thyratron for switching, controlled-rectifier, relay, motor-control, oscillator, or pulse service as documented by the manufacturer.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 2.5 V
- Sections
- 1
2D21 Thyratron
Gas-filled tetrode thyratron widely used for relay, controlled-rectifier, and pulse-switching applications.
- Base
- B7G
- Socket
- B7G
- Heater
- 6.3 V
- Sections
- 1
2D21W Thyratron
Ruggedized xenon-filled four-electrode thyratron for switching, pulse modulation, relay, and grid-controlled rectifier service under shock and vibration.
- Base
- Not recorded
- Socket
- IO
- Heater
- 6.3 V
- Sections
- 1
2G22P Thyratron
Hydrogen thyratron for high-power, high-speed pulse switching, interchangeable with 5C22 in pulse-modulator service.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 6.3 V
- Sections
- 1
30TC1 Thyratron
Gas-filled tacitron for relay, pulse-shaping, oscillator, switching, and servo-control circuits.
- Base
- Not recorded
- Socket
- Not recorded
- Heater
- 6.3 V
- Sections
- 1
323A Thyratron
Western Electric argon/mercury special-purpose diode for high-current switching and rectifier service rather than a grid-controlled thyratron.
- Base
- Not recorded
- Socket
- UX4
- Heater
- 2.5 V
- Sections
- 1
323B Thyratron
Gas-filled grid-controlled thyratron for switching, controlled-rectifier, relay, motor-control, oscillator, or pulse service as documented by the manufacturer.
- Base
- Not recorded
- Socket
- B4B
- Heater
- 2.5 V
- Sections
- 1
338A Thyratron
Western Electric argon-filled heater-cathode special-purpose diode; available manufacturer documentation does not establish a grid-controlled thyratron function.
- Base
- Not recorded
- Socket
- UX4
- Heater
- 10 V
- Sections
- 1
354A Thyratron
Gas-filled grid-controlled thyratron for switching, controlled-rectifier, relay, motor-control, oscillator, or pulse service as documented by the manufacturer.
- Base
- Not recorded
- Socket
- UX4
- Heater
- 2.5 V
- Sections
- 1
355A Thyratron
Gas-filled grid-controlled thyratron for switching, controlled-rectifier, relay, motor-control, oscillator, or pulse service as documented by the manufacturer.
- Base
- Not recorded
- Socket
- UX4
- Heater
- 2.5 V
- Sections
- 1
393A Thyratron
Gas-filled grid-controlled thyratron for switching, controlled-rectifier, relay, motor-control, oscillator, or pulse service as documented by the manufacturer.
- Base
- Not recorded
- Socket
- B4B
- Heater
- 2.5 V
- Sections
- 1
394A Thyratron
Gas-filled grid-controlled thyratron for switching, controlled-rectifier, relay, motor-control, oscillator, or pulse service as documented by the manufacturer.
- Base
- Not recorded
- Socket
- UX4
- Heater
- 2.5 V
- Sections
- 1
395A Thyratron
Small cold-cathode neon thyratron requiring no heater, intended primarily for relay operation and also useful as a trigger tube, relaxation oscillator, and voltage regulator.
- Base
- Not recorded
- Socket
- UX4
- Heater
- Not recorded
- Sections
- 1
3C23 Thyratron
Gas-filled grid-controlled thyratron for switching, controlled-rectifier, relay, motor-control, oscillator, or pulse service as documented by the manufacturer.
- Base
- UX4
- Socket
- IO
- Heater
- 2.5 V
- Sections
- 1
3C45 Thyratron
Hydrogen thyratron designed for fast high-power pulse switching, using rapid ionization and deionization for pulse-modulator and network-discharge service.
- Base
- Not recorded
- Socket
- UX4
- Heater
- 6.3 V
- Sections
- 1
