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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.

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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

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  • 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