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Specialized tube type

Specialized - Ignitron vacuum tubes

Specialized - Ignitron records in Tube Tinker cover 115 tube designations, including 231 preserved original datasheets. Compare bases, sockets, heater requirements, construction, exact variations, and directional replacement options.

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Tube records
115
Original datasheets
231
Variation families
3
Tubes with alternatives
1

About Specialized - Ignitron tubes

Ignitron switching tube, mercury filled, for welding, etc.

Electrical range

Nominal heater voltage
0–16 V
Nominal heater current
0–21 A

Common specialized - ignitron characteristics

These are the most frequently recorded attributes among tubes in this category.

Bases

  • Unpackaged coaxial magnetron2
  • 9QA1
  • SUPER JUMBO1

Sockets

  • B9A7
  • IO3
  • B4B1

Constructions

  • IgnitronPowerSwitch104
  • Triode6
  • Magnetron2
  • Thyratron2
  • Pentode-Triode1

Specialized - Ignitron tube list

Page 2 of 3

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  • 7736

    IgnitronPowerSwitch

    Ignitron designed for continuous-duty industrial power-rectifier service, using a mercury-pool cathode for controlled high-current conduction.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • 7740

    IgnitronPowerSwitch

    Sealed steel-envelope ignitron for low-inductance capacitor-discharge circuits, designed to switch extremely high pulse currents at voltages up to about 20 kV.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • 7998

    IgnitronPowerSwitch

    Sealed stainless-steel-jacketed water-cooled coaxial ignitron for electronic-contactor, resistance-welding, and AC-control service in high-current industrial power systems.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • 8205

    IgnitronPowerSwitch

    Water-cooled coaxial mercury-pool ignitron designed for AC-control welder service, providing controlled switching of very large industrial currents.

    Base
    Not recorded
    Socket
    B9A
    Heater
    Not recorded
    Sections
    1
  • 8306

    IgnitronPowerSwitch

    Sealed ignitron designed for low-inductance high-current capacitor-discharge circuits, switching pulses up to approximately 15 kV and 35 kA.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • 8360

    IgnitronPowerSwitch

    Coaxial mercury-pool ignitron electrically equivalent to type 7670 apart from mechanical dimensions, intended for high-current industrial switching and control service.

    Base
    Not recorded
    Socket
    B9A
    Heater
    Not recorded
    Sections
    1
  • 8420

    IgnitronPowerSwitch

    Forced-air-cooled coaxial mercury-pool ignitron designed specifically for railroad-locomotive electronic-contactor service and other high-current industrial switching applications.

    Base
    Not recorded
    Socket
    B9A
    Heater
    Not recorded
    Sections
    1
  • 8GJ7

    Pentode-Triode

    Medium-mu triode plus sharp-cutoff pentode used as a combined oscillator and mixer in television receivers.

    Base
    9QA
    Socket
    B9A
    Heater
    8.6 V
    Sections
    2
  • AGR9950

    Thyratron

    Radiation-cooled mercury-vapor thyratron for stepless voltage-output and DC motor control. Grid triggering regulates substantial industrial power.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    5 V
    Sections
    1
  • AJ5101

    IgnitronPowerSwitch

    Air-cooled glass ignitron for industrial AC switching. Controlled mercury-pool discharge handles heavy power-control currents.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • AJ5102

    IgnitronPowerSwitch

    Water-cooled metal ignitron for heavy industrial switching. Its controlled mercury-discharge path handles very high current.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • AJ5105

    IgnitronPowerSwitch

    Air-cooled high-voltage ignitron for capacitor-discharge and industrial RF-generator power supplies. Controlled mercury discharge switches substantial stored energy.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • AJ5551

    IgnitronPowerSwitch

    Water-cooled metal ignitron for high-power industrial switching. Its mercury-pool discharge path handles extremely large currents.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • AJ5551A

    IgnitronPowerSwitch

    Water-cooled thermostatically controlled ignitron for high-power industrial switching. Thermal regulation supports reliable heavy-current mercury-discharge operation.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • AJ5552

    IgnitronPowerSwitch

    Water-cooled mercury-pool ignitron designed for industrial AC power and resistance-welding control, providing controlled switching of very large currents.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • AJ5552A

    IgnitronPowerSwitch

    Water-cooled mercury-pool ignitron designed for industrial AC power and resistance-welding control, providing controlled switching of very large currents.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • AJ5553B

    IgnitronPowerSwitch

    Water-cooled mercury-pool ignitron designed for industrial AC power and resistance-welding control, providing controlled switching of very large currents.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • AJ6346

    IgnitronPowerSwitch

    Water-cooled mercury-pool ignitron designed for industrial AC power and resistance-welding control, providing controlled switching of very large currents.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • AJ6347

    IgnitronPowerSwitch

    Water-cooled mercury-pool ignitron designed for industrial AC power and resistance-welding control, providing controlled switching of very large currents.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • AX5551A

    IgnitronPowerSwitch

    Water-cooled sensing-plate ignitron for industrial welder control. This heavy-current mercury-discharge device combines rectification with controlled switching in resistance-welding power systems.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • AX5552

    IgnitronPowerSwitch

    Water-cooled sensing-plate ignitron for high-current industrial welder control. Its mercury-discharge construction provides controlled heavy-current switching and rectification.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • AX5555

    IgnitronPowerSwitch

    Water-cooled very-high-current ignitron for heavy industrial resistance-welding control. Its mercury-discharge construction switches and rectifies enormous currents in demanding welding systems.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • AX5822

    IgnitronPowerSwitch

    Water-cooled ignitron with sensing-plate provision for industrial welder control. This heavy-current mercury-discharge device combines controlled switching with rectification in resistance-welding equipment.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • AX9900

    Triode

    Industrial transmitting power triode intended for RF amplification, oscillation, or modulation. Manufacturer data emphasize substantial plate power, professional transmitter operation, and construction suited to continuous high-power service.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    6.3 V
    Sections
    1
  • AX9901

    Triode

    Industrial transmitting power triode intended for RF amplification, oscillation, or modulation. Manufacturer data emphasize substantial plate power, professional transmitter operation, and construction suited to continuous high-power service.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    5.25 V
    Sections
    1
  • AX9902

    Triode

    Industrial transmitting power triode intended for RF amplification, oscillation, or modulation. Manufacturer data emphasize substantial plate power, professional transmitter operation, and construction suited to continuous high-power service.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    10 V
    Sections
    1
  • F695

    Thyratron

    Four-electrode mercury-vapor thyratron designed for high-impedance, low-grid-power control sources. Its heavy heater supports substantial controlled current.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    5 V
    Sections
    1
  • FG235A

    IgnitronPowerSwitch

    Water-cooled ignitron for welder-control and rectifier service. Controlled mercury-pool discharge handles extremely high industrial currents.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • FG238B

    IgnitronPowerSwitch

    Water-cooled ignitron for industrial power rectifiers and welding control. Its controlled mercury discharge handles very high current.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • FG258A

    IgnitronPowerSwitch

    High-current water-cooled ignitron for resistance-welder control. Its mercury-pool discharge switches enormous industrial welding currents.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • FG259B

    IgnitronPowerSwitch

    Water-cooled ignitron for industrial power rectifiers and welding control. Controlled mercury discharge handles heavy power-system current.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • FG271

    IgnitronPowerSwitch

    Water-cooled ignitron for welder-control and intermittent rectifier service. Its mercury-pool discharge handles extremely high current.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • GL427

    IgnitronPowerSwitch

    Small air-cooled glass ignitron designed primarily for classroom and laboratory demonstration of ignitron construction and operation, with practical high-current rectifier ratings.

    Base
    Not recorded
    Socket
    B4B
    Heater
    Not recorded
    Sections
    1
  • GL7171

    IgnitronPowerSwitch

    Sealed stainless-steel-jacketed ignitron for capacitor-discharge and DC short-circuiting switch service. Controlled mercury discharge handles extremely high pulse currents.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • GL7703

    IgnitronPowerSwitch

    Jacketed ignitron for capacitor-discharge switching service. Its controlled mercury-discharge path handles very high short-duration industrial currents.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • I035

    IgnitronPowerSwitch

    Mercury-cathode ignitron for high-current switching in timing devices, welding controls, X-ray equipment, magnetizing circuits, and accelerator systems.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • J1010001GL

    IgnitronPowerSwitch

    Earlier J10/1000/1 Gl mercury-pool ignitron power-switch type, explicitly superseded by AJ5105.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • MPS1A

    IgnitronPowerSwitch

    Marconi mercury-pool ignitron using an electrostatic ignition electrode for controlled high-current power switching.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • NL1001

    IgnitronPowerSwitch

    Mercury-pool ignitron power switch for industrial welding, rectifier, or high-current control service.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • NL1005

    IgnitronPowerSwitch

    Mercury-pool ignitron power switch for industrial welding, rectifier, or high-current control service.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • NL1009

    IgnitronPowerSwitch

    Mercury-pool ignitron power switch for industrial welding, rectifier, or high-current control service.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • NL1022

    IgnitronPowerSwitch

    Mercury-pool ignitron power switch for industrial welding, rectifier, or high-current control service.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • NL1051

    IgnitronPowerSwitch

    Mercury-pool ignitron power switch for industrial welding, rectifier, or high-current control service.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • NL1052

    IgnitronPowerSwitch

    Mercury-pool ignitron power switch for industrial welding, rectifier, or high-current control service.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • NL1053

    IgnitronPowerSwitch

    Mercury-pool ignitron power switch for industrial welding, rectifier, or high-current control service.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • NL1054

    IgnitronPowerSwitch

    Mercury-pool ignitron power switch for industrial welding, rectifier, or high-current control service.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • NL5550

    IgnitronPowerSwitch

    Mercury-pool ignitron power switch for industrial welding, rectifier, or high-current control service.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    Not recorded
    Sections
    1
  • PL5544

    IgnitronPowerSwitch

    Directly heated xenon-filled thyratron triode for motor control and ignitron-firing service. Its heavy filament supports substantial controlled current.

    Base
    Not recorded
    Socket
    Not recorded
    Heater
    2.5 V
    Sections
    1