Electronic tube and vacuum tube catalog

Base

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Socket code

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Electrical Summary

Heater	13 V / 200 mA
Ik max	S1: 1 mAS2: 1 mA

Sections

2

Double-diode receiving valve for detector and low-level signal-rectification duties in radio receivers. Two diode sections provide paired detection or control-voltage functions from one compact envelope.

Base

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Socket code

B7G

Electrical Summary

Heater	19 V / 100 mA
Ik max	S1: 9 mAS2: 9 mA
Rectifier	S1: 9 mA
V Inverse	S1: 500 V

Sections

2

7 pins - B7G - Miniature 7-contact

Double-diode valve for radio detection and related signal rectification. Its two diode sections permit multiple detector or control-voltage functions, while the 19 V heater suits series-string receiver operation.

Base

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Socket code

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Electrical Summary

-

Sections

2

Russian twin diode designed for high-frequency oscillation detection and conversion, providing paired rectifying sections for receiver detector and frequency-conversion circuitry.

Base

70

Socket code

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Electrical Summary

Heater	12.6 V / 150 mA
Ik max	S1: 8 mA
Rectifier	S1: 8 mA
V Drop	S1: 11 V
V Inverse	S1: 420 V

Sections

2

Twin high-vacuum diode for detector, discriminator, and general signal rectification, using a 12.6 V heater suitable for series-fed receiving equipment.

Base

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Socket code

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Electrical Summary

Heater	12.6 V / 735 mA

Sections

2

Russian twin diode intended for high-frequency detection and signal conversion, with two rectifying sections and a relatively substantial 12.6 V heater.

Base

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Socket code

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Electrical Summary

Heater	17.5 V / 300 mA
Ik max	75 mA

Sections

1

9 pins

Diode documented by General Electric; the available source establishes the device identity but does not provide enough clear application evidence for a narrower functional classification.

Base

9QM

Socket code

B9A

Electrical Summary

Heater	18.9 V / 150 mA
Rectifier	S1: 9 mA
V Drop	S1: 10 V
V Inverse	S1: 330 V

Sections

3

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

Triple high-perveance diode designed for AM detection and FM ratio-detector or discriminator applications, integrating three diode sections in one miniature envelope.

Base

5AP

Socket code

B7G

Electrical Summary

Heater	1.4 V / 150 mA
Ik max	0.5 mA
Rectifier	0.5 mA
V Inverse	330 V

Sections

1

7 pins - B7G - Miniature 7-contact

Battery-operated RF detector diode intended for radio signal detection and low-level rectification. Its simple thermionic diode construction is optimized for receiving-equipment signal processing rather than power-supply rectification.

Base

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Socket code

B7G

Electrical Summary

Heater	5 V / 1.5 A
Plate	150 V

Sections

1

7 pins - B7G - Miniature 7-contact

Directly heated noise diode designed specifically as a noise source in electronic noise generators.

Base

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Socket code

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Electrical Summary

Heater	5 V / 300 mA
Plate	0.1 W
Rectifier	1 mA
V Inverse	1,000 V
rP	8,000 Ω

Sections

1

Small low-capacitance high-vacuum diode designed for detector, switching, and special high-frequency instrument applications, with operation extending into UHF.

Base

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Socket code

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Electrical Summary

Heater	9.5 V / 200 mA
Rectifier	S1: 9 mA
V Inverse	S1: 500 V

Sections

2

Twin diode with separate cathodes for paired detector, discriminator, or control-voltage rectification functions in series-fed receiving equipment.

Base

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Socket code

B5

Electrical Summary

Heater	2 V / 200 mA

Sections

2

5 pins - B5 - European 5-pin base

Cossor twin-diode valve for detector, AVC, and related signal-rectification functions in battery receivers. Two diode sections permit complementary detector and control-voltage duties within one envelope.

Base

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Socket code

IO

Electrical Summary

Heater	4 V / 800 mA
Plate	100 V
Ik max	3 mA

Sections

1

8 pins - IO - International Octal

Directly heated high-vacuum control diode designed as the controlling element in electronic stabilizer circuits.

Base

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Socket code

B9A

Electrical Summary

Heater	1.8 V / 300 mA
Rectifier	0.6 mA
V Drop	55 V
V Inverse	8,250 V

Sections

1

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

Miniature directly heated high-voltage focus rectifier designed for television CRT focus-supply service.

Base

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Socket code

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Electrical Summary

Heater	13 V / 200 mA
V Inverse	S1: 200 V

Sections

2

Common-cathode double diode for detector and signal-rectification service in AC/DC receivers and automobile radios, with a 13 V series-string heater.

Base

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Socket code

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Electrical Summary

Heater	13 V / 200 mA
V Inverse	S1: 200 V

Sections

2

Common-cathode detector double diode electrically equivalent to 2D13C except for its base, intended for receiving-equipment signal rectification.

Base

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Socket code

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Electrical Summary

Heater	13 V / 200 mA
V Inverse	S1: 200 V

Sections

2

Common-cathode double diode for detector and signal rectification in AC/DC and automobile receivers, using a 13 V heater suited to series-string operation.

Base

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Socket code

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Electrical Summary

Heater	2.3 V / 400 mA

Sections

1

Indirectly heated UHF detector and measuring diode.

Base

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Socket code

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Electrical Summary

Heater	1.4 V / 1.45 A
Plate	200 V / 5 W
gm	0.1 mA/V

Sections

1

Russian diode documented in technical reference literature; available source material does not clearly establish a narrower specialized functional role.

Base

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Socket code

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Electrical Summary

Heater	2.2 V / 110 mA
Plate	150 V / 6 W

Sections

1

Russian diode documented in technical reference literature; available source material does not clearly establish a narrower specialized functional role.

Base

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Socket code

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Electrical Summary

Heater	1.4 V / 2.12 A
Plate	400 V / 6 W
Ik max	5.5 mA
gm	0.03 mA/V

Sections

1

Russian diode documented in technical reference literature; available source material does not clearly establish a narrower specialized functional role.

Base

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Socket code

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Electrical Summary

Heater	3.7 V / 550 mA
Plate	500 V
gm	0.03 mA/V

Sections

1

Russian diode documented in technical reference literature; available source material does not clearly establish a narrower specialized functional role.

Base

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Socket code

B7G

Electrical Summary

Heater	2.1 V / 450 mA
Ik max	S1: 5 mAS2: 5 mA
V Drop	S1: 5 V

Sections

2

7 pins - B7G - Miniature 7-contact

Double diode for detector, discriminator, and general signal-rectifier service, with paired thermionic sections for balanced or complementary functions.

Base

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Socket code

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Electrical Summary

Heater	2.2 V / 130 mA

Sections

2

Indirectly heated dual detector and discriminator diode.

Base

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Socket code

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Electrical Summary

Heater	6.3 V / 150 mA
Rectifier	5 mA
V Inverse	500 V

Sections

1

9 pins

Western Electric heater-cathode special-purpose diode documented in the manufacturer's diode table; available source does not clearly establish a narrower application.

Base

E7-1

Socket code

B7G

Electrical Summary

Heater	3.15 V / 600 mA
Rectifier	S1: 9 mA
V Drop	S1: 10 V
V Inverse	S1: 330 V

Sections

2

7 pins - B7G - Miniature 7-contact

High-perveance twin diode intended especially for FM and television detection, including balanced ratio-detector circuits and related discriminator service.

Base

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Socket code

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Electrical Summary

Heater	3.15 V / 320 mA
V Inverse	450 V

Sections

1

Base

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Socket code

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Electrical Summary

Heater	4 V / 2.25 A
Plate	125 V / 15 W

Sections

1

4 pins

Two-electrode high-vacuum laboratory tube designed for studying fundamental electron phenomena, using a pure tungsten filament for emission experiments.

Base

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Socket code

SPECIAL4LOWLOSS

Electrical Summary

Heater	2.5 V / 8 A
Rectifier	1 mA
V Inverse	20,000 V

Sections

1

4 pins - SPECIAL4LOWLOSS - Special 4-contact low-loss base

High-voltage diode designed specifically for electrostatic voltmeter service, with published construction and operating limits for measurement applications.

Base

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Socket code

UX4

Electrical Summary

Ik max	200 mA

Sections

1

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

Inert-gas-filled cold-cathode two-electrode tube designed for message-register, switching, pulse-counting, and control circuits.

Base

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Socket code

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Electrical Summary

Heater	6.3 V / 180 mA
Plate	180 V

Sections

1

4 pins

Low-capacitance acorn diode designed for high-frequency detector service, using compact construction to minimize anode-cathode capacitance.

Base

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Socket code

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Electrical Summary

Heater	4 V / 1.8 A
Plate	1.2 W

Sections

1

Directly heated diode for voltage-regulator service.

Base

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Socket code

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Electrical Summary

Heater	4 V / 1.8 A
Plate	1 W

Sections

1

Directly heated diode for voltage-regulator service.

Base

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Socket code

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Electrical Summary

Heater	4 V / 210 mA

Sections

1

Base

RIMLOCK

Socket code

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Electrical Summary

Heater	4.6 V / 155 mA
Plate	300 V
Ik max	0.4 mA

Sections

1

8 pins

Directly heated saturated diode designed for stabilizing circuits, using controlled saturated-emission characteristics as an electronic reference or control element.

Base

Special2Lead

Socket code

SPECIAL2

Electrical Summary

Heater	1.25 V / 200 mA
Rectifier	0.25 mA
V Drop	70 V
V Inverse	10,000 V

Sections

1

2 pins - SPECIAL2 - Special 2-contact base

Subminiature directly heated high-voltage half-wave vacuum rectifier with approximately 10 kV inverse capability, suitable for high-frequency and pulsed rectifier service.

Base

7CX

Socket code

B7G

Electrical Summary

Heater	6.3 V / 150 mA
Rectifier	S1: 8 mA
V Drop	S1: 11 V

Sections

2

7 pins - B7G - Miniature 7-contact

Cathode-type twin diode for detector, discriminator, clipping, and general signal rectification, providing two compact thermionic rectifiers in one envelope.

Base

5704

Socket code

B9A

Electrical Summary

Heater	6.3 V / 150 mA
Rectifier	9 mA
V Drop	2 V
V Inverse	420 V

Sections

1

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

Subminiature cathode-type diode designed for VHF detector applications and usable as a compact half-wave rectifier.

Base

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Socket code

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Electrical Summary

Heater	6.3 V / 150 mA
Rectifier	10 mA
V Inverse	460 V

Sections

1

Base

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Socket code

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Electrical Summary

Heater	4.9 V / 1.6 A
Plate	5 W
Ik max	35 mA

Sections

1

8 pins

Tungsten-filament diode designed as an RF noise generator, with published operation extending into the VHF range.

Base

E7-1

Socket code

B7G

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S1: 0.25 W
Rectifier	S1: 10 mA
V Inverse	S1: 360 V

Sections

2

7 pins - B7G - Miniature 7-contact

Ruggedized dual diode with separate cathodes for detector, rectifier, switching, and instrumentation service in demanding industrial or communications equipment.

Base

5829

Socket code

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Electrical Summary

Heater	6.3 V / 150 mA
Rectifier	S1: 5 mA
V Drop	S1: 5 V
V Inverse	S1: 320 V

Sections

2

Special high-frequency twin diode intended for detector and low-current rectifier service, providing paired sections for RF signal processing.

Base

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Socket code

SUBMINIATURE8

Electrical Summary

Heater	6.3 V / 300 mA
Rectifier	S1: 5 mA
V Drop	S1: 5 V
V Inverse	S1: 350 V

Sections

2

8 pins - SUBMINIATURE8 - Subminiature 8-lead base

Premium rugged subminiature twin diode with independently shielded sections for military and industrial detector service to approximately 400 MHz.

Base

Refer to variations

Socket code

B7G

Electrical Summary

Heater	4.3 V / 435 mA
Plate	S1: 300 V
Ik max	S1: 2 mA

Sections

2

7 pins - B7G - Miniature 7-contact

Temperature-limited tungsten-filament double diode whose plate current is deliberately controlled by filament voltage, intended for specialized regulation, measurement, or signal-processing circuits.

Base

8DJ

Socket code

SUBMINIATURE8

Electrical Summary

Heater	6.3 V / 300 mA
Rectifier	S1: 10 mA
V Drop	S1: 4.5 V
V Inverse	S1: 460 V

Sections

2

8 pins - SUBMINIATURE8 - Subminiature 8-lead base

Subminiature twin diode with separate cathodes for detector, AGC, and low-current rectifier service in industrial and communications equipment.

Base

8DJ

Socket code

SUBMINIATURE8

Electrical Summary

Heater	26.5 V / 75 mA
Rectifier	S1: 10 mA
V Drop	S1: 4.5 V
V Inverse	S1: 460 V

Sections

2

8 pins - SUBMINIATURE8 - Subminiature 8-lead base

High-perveance double diode for detector applications in low-current series-string equipment, using an unusual 26.5 V, 75 mA heater.

Base

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Socket code

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Electrical Summary

Heater	6.3 V / 150 mA

Sections

1

Base

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Socket code

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Electrical Summary

Heater	1 A

Sections

1

8 pins

Temperature-limited tungsten-filament diode designed as a stable reference source for voltage regulators and circuits requiring predictable temperature-limited emission characteristics.

Base

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Socket code

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Electrical Summary

Heater	6.3 V / 360 mA
V Inverse	S1: 460 VS2: 460 V

Sections

2

Subminiature twin diode designed for detector and signal-rectification operation through the UHF region, with compact construction minimizing high-frequency parasitic effects.

Base

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Socket code

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Electrical Summary

Heater	26.5 V / 85 mA
V Inverse	S1: 460 VS2: 460 V

Sections

2

Subminiature high-frequency double diode for detector and signal rectification, using a 26.5 V low-current heater for specialized series-string equipment.