Electronic tube and vacuum tube catalog

Base

Refer to variations

Socket code

CANDELABRA2

Electrical Summary

Refer to variations

Sections

1

CANDELABRA2 - Candelabra double-contact base

Cold-cathode glow-discharge relay tube for DC operation. Gas ionization provides abrupt electronic control without a heater, similar in function to the OA4-G.

Base

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Socket code

UX4

Electrical Summary

Ik max	35 mA

Sections

1

UX4 - Medium-shell UX 4-contact

Three-electrode inert-gas cold-cathode control tube for relay and switching circuits. Gas ionization provides abrupt controlled conduction without a heater.

Base

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Socket code

UX4

Electrical Summary

Ik max	35 mA

Sections

1

UX4 - Medium-shell UX 4-contact

Three-electrode inert-gas cold-cathode control tube for relay and switching circuits. Its discharge provides abrupt controlled conduction without thermionic heating.

Base

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Socket code

UX4

Electrical Summary

Ik max	35 mA

Sections

1

UX4 - Medium-shell UX 4-contact

Three-electrode inert-gas cold-cathode control tube for relay and switching circuits. Gas-discharge action provides heaterless electronic control.

Base

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Socket code

UX4

Electrical Summary

Plate	165 V
Ik max	15 mA

Sections

1

UX4 - Medium-shell UX 4-contact

Cold-cathode relay and control tube using gas-discharge conduction. It provides heaterless electronic switching for control and signaling circuits.

Base

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Socket code

UX4

Electrical Summary

Ik max	40 mA

Sections

1

UX4 - Medium-shell UX 4-contact

Three-electrode inert-gas cold-cathode relay tube for communication, triggering, counting, switching, and control circuits. Gas ionization provides abrupt heaterless conduction.

Base

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Socket code

UX4

Electrical Summary

-

Sections

1

UX4 - Medium-shell UX 4-contact

Four-electrode inert-gas cold-cathode tube intended for relay service. Multiple electrodes provide controlled gas-discharge switching without a heater supply.

Base

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Socket code

UX4

Electrical Summary

Ik max	200 mA

Sections

1

UX4 - Medium-shell UX 4-contact

Western Electric cold-cathode gas-discharge device for specialized switching and control. Gas ionization provides abrupt heaterless conduction useful for triggering and relay functions.

Base

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Socket code

UX4

Electrical Summary

Ik max	50 mA

Sections

1

UX4 - Medium-shell UX 4-contact

Four-electrode inert-gas-filled cold-cathode relay tube with isolated starter and main discharge gaps, providing electrical isolation between control and switched portions of a circuit.

Base

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Socket code

UX4

Electrical Summary

Ik max	60 mA

Sections

1

UX4 - Medium-shell UX 4-contact

Three-electrode inert-gas-filled miniature cold-cathode tube for relay, regulator, rectifier, and control service, providing heaterless gas-discharge switching in communications and industrial equipment.

Base

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Socket code

UX4

Electrical Summary

Ik max	50 mA

Sections

1

9 pins - UX4 - Medium-shell UX 4-contact

Four-electrode inert-gas-filled cold-cathode relay tube with isolated starter and main gaps, providing controlled gas-discharge switching with isolation between control and load circuits.

Base

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Socket code

—

Electrical Summary

-

Sections

1

Three-electrode inert-gas-filled cold-cathode control tube with documented starter and anode operating characteristics, intended for heaterless relay and switching applications.

Base

Refer to variations

Socket code

Refer to variations

Electrical Summary

Plate	1,300 V

Sections

1

4 pins

Cold-cathode specialized relay and control switching tube. Available source material confirms the control-switch role but does not support a more specific functional description.

Base

—

Socket code

—

Electrical Summary

Plate	1,000 V
Ik max	60 A

Sections

1

Rugged inert-gas cold-cathode trigger tube capable of very high peak currents for rapid relay, control, and trigger switching.

Base

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Socket code

—

Electrical Summary

-

Sections

1

Electrostatic relay for electronic control and switching. Electrostatic force operates the sealed switching mechanism without conventional electromagnetic relay coils.

Base

—

Socket code

B7G

Electrical Summary

Ik max	15 mA

Sections

1

B7G - Miniature 7-contact

High-speed primed-trigger cold-cathode tube developed as a coupling element for G10/241E decade-counter systems, transferring counting pulses between stages.

Base

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Socket code

IO

Electrical Summary

Ik max	30 mA

Sections

1

IO - International Octal

Cold-cathode three-electrode gas-filled triode with activated cathode for relay and counter applications. Gas-discharge conduction provides heaterless control switching.

Base

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Socket code

IO

Electrical Summary

Ik max	30 mA

Sections

1

IO - International Octal

Cold-cathode gas-filled triode, printed G240/2D, for higher-power relay and counter applications. Its discharge provides heaterless electronic control.

Base

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Socket code

—

Electrical Summary

Ik max	15 mA

Sections

1

Cold-cathode electronic touch-button relay tube triggered by touching its external control electrode. The cathode glow provides visible indication as an orange ring.

Base

—

Socket code

—

Electrical Summary

Ik max	40 mA

Sections

1

9 pins

Cold-cathode gas relay triode with molybdenum cathode for AC anode supply and starter control. Gas discharge provides heaterless relay switching.

Base

—

Socket code

B9A

Electrical Summary

Ik max	30 mA

Sections

1

9 pins - B9A - Small-button Noval 9-contact

Cold-cathode DC relay triode with two starters and a keep-alive electrode, suitable for control and counting circuits requiring stable switching.

Base

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Socket code

B9A

Electrical Summary

Ik max	40 mA

Sections

1

9 pins - B9A - Small-button Noval 9-contact

Cold-cathode DC relay triode with starter and keep-alive anode for stable sensitive control. Gas discharge provides reliable heaterless switching.

Base

—

Socket code

—

Electrical Summary

-

Sections

1

Cold-cathode relay tube with stable starter breakdown voltage for DC control. Gas-discharge operation provides repeatable heaterless switching.

Base

—

Socket code

—

Electrical Summary

-

Sections

1

Cold-cathode two-starter relay tube for DC control. Multiple starter electrodes provide flexible gas-discharge triggering and switching.

Base

—

Socket code

—

Electrical Summary

-

Sections

1

Cold-cathode relay tube for stable relay and timing control. Gas-discharge conduction provides repeatable heaterless switching.

Base

—

Socket code

—

Electrical Summary

-

Sections

1

Cold-cathode relay tube with starter and keep-alive electrodes. Its gas discharge supports stable control and switching without a heater.

Base

—

Socket code

—

Electrical Summary

-

Sections

1

Subminiature cold-cathode relay tube for timing and industrial electronics. Gas-discharge operation provides compact heaterless control switching.

Base

—

Socket code

—

Electrical Summary

Ik max	25 mA
Regulator	0.08 V
Min/Max I	25 mA

Sections

1

Cold-cathode touch-button tube used as a self-indicating electronic switch. Touching its control electrode triggers gas discharge capable of operating a relay.

Base

—

Socket code

—

Electrical Summary

-

Sections

1

Electrostatic relay for electronic switching and control. Electrostatic force operates the sealed switching mechanism without a conventional electromagnetic relay coil.

Base

Refer to variations

Socket code

B7G

Electrical Summary

Refer to variations

Sections

1

B7G - Miniature 7-contact

Cold-cathode relay and control switching tube. Available source classification establishes heaterless gas-discharge control service without enough detail for a narrower description.

Base

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Socket code

—

Electrical Summary

-

Sections

1

Base

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Socket code

—

Electrical Summary

-

Sections

1

Base

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Socket code

—

Electrical Summary

-

Sections

1

Subminiature cold-cathode glow-relay tube with two equivalent starter electrodes and auxiliary anode for counting, multivibrator, and relay-control circuits.