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.
- 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
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
