Electronic tube and vacuum tube catalog

Base

—

Socket code

B9A

Electrical Summary

Heater	10.2 V / 450 mA
Plate	S3: 330 V / 4 W
Screen	S3: 1.1 W
rP	S3: 50,000 Ω
gm	S3: 20 mA/V

Sections

3

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

Frame-grid sharp-cutoff pentode combined with two diode sections for television video amplification and horizontal phase-detector service.

Base

9RL

Socket code

B9A

Electrical Summary

Heater	11.4 V / 315 mA
Plate	S1: 330 V / 3.1 W
Screen	S1: 330 V / 0.65 W
rP	S1: 200,000 Ω
gm	S1: 13 mA/V

Sections

3

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

Twin discriminator diodes and sharp-cutoff pentode designed for television horizontal AFC discrimination and low-frequency horizontal-oscillator service.

Base

7-K

Socket code

UX7

Electrical Summary

Heater	12.6 V / 300 mA
Plate	S2: 135 V
Screen	S2: 135 V
Rectifier	S1: 30 mA
V Drop	S1: 15 V
rP	S2: 102,000 Ω
gm	S2: 0.975 mA/V
μ	S2: 100

Sections

2

7 pins - UX7 - Small 7-contact (0.75-inch pin circle)

Combination half-wave rectifier and power-amplifier pentode designed for compact AC/DC receivers, integrating power-supply rectification with audio output amplification.

Base

Refer to variations

Socket code

B9A

Electrical Summary

Heater	17 V / 100 mA
Plate	S3: 250 V / 1.5 W
Screen	S3: 250 V / 0.3 W
Ik max	S1: 0.8 mAS2: 0.8 mAS3: 10 mA
V Inverse	S1: 350 VS2: 350 V
rP	S3: 1,000,000 Ω
gm	S3: 2.2 mA/V

Sections

3

B9A - Small-button Noval 9-contact

Double-diode remote-cutoff pentode designed for RF, IF, or AF amplification together with receiver detection functions.

Base

6AU

Socket code

B7G

Electrical Summary

Heater	1.4 V / 25 mA
Plate	S1: 110 V
Screen	S1: 110 V
Ik max	S1: 2.5 mA
rP	S1: 2,000,000 Ω
gm	S1: 0.6 mA/V

Sections

2

7 pins - B7G - Miniature 7-contact

Source mismatch prevents a defensible functional classification: the supplied manufacturer page does not contain a printed 1AF5 entry, so neighboring tube data were not inferred.

Base

6AU

Socket code

—

Electrical Summary

Heater	1.4 V / 25 mA
Plate	S2: 90 V
Screen	S2: 90 V

Sections

2

Directly heated battery diode-pentode combining radio signal detection with subsequent low-frequency voltage amplification. The diode recovers the received signal while the pentode provides AF gain in economical portable receivers.

Base

—

Socket code

—

Electrical Summary

Heater	1.2 V / 30 mA
Plate	S2: 90 V
Screen	S2: 67.5 V
Ik max	S2: 4.5 mA
gm	S2: 0.25 mA/V

Sections

2

Russian diode-pentode designed for low-frequency voltage preamplification and signal detection in receiving equipment.

Base

—

Socket code

B7G

Electrical Summary

Heater	1.4 V / 50 mA
Plate	S2: 90 V
Screen	S2: 90 V
Ik max	S1: 0.2 mAS2: 3 mA
rP	S2: 600,000 Ω
gm	S2: 0.625 mA/V

Sections

2

7 pins - B7G - Miniature 7-contact

Battery diode-pentode combining signal detection with subsequent voltage amplification. The diode supplies detector action while the pentode operates from low-voltage receiver supplies with an economical directly heated filament.

Base

—

Socket code

—

Electrical Summary

Heater	2 V
Plate	S1: 180 V
Screen	S1: 135 V
μ	S1: 15

Sections

3

6 pins

Duo-diode pentode combining two detector diodes with a pentode amplifier section; available documentation does not support a narrower functional assignment.

Base

—

Socket code

—

Electrical Summary

Heater	2 V / 120 mA
Plate	S1: 180 V / 0.35 W
Screen	S1: 135 V / 0.07 W
rP	S1: 1,250,000 Ω
gm	S1: 0.8 mA/V

Sections

3

8 pins

Directly heated Radiotron dual-diode pentode, combining two signal detector diode plates with a pentode amplifier. Uses a 2 V, 120 mA coated filament and an eight-contact octal base.

Base

7AM

Socket code

IO

Electrical Summary

Heater	1.4 V / 50 mA
Plate	S1: 110 V
Screen	S1: 110 V
rP	S1: 300,000 Ω
gm	S1: 0.8 mA/V

Sections

2

8 pins - IO - International Octal

Battery-receiver combination tube containing a detector diode and power-amplifier pentode for signal detection and audio output service.

Base

7AM

Socket code

—

Electrical Summary

Heater	1.4 V / 50 mA
Plate	S2: 110 V
Screen	S2: 110 V
rP	S2: 300,000 Ω
gm	S2: 0.8 mA/V

Sections

2

GT-envelope battery-receiver tube combining a detector diode with a power-amplifier pentode for detection and audio output service.

Base

—

Socket code

—

Electrical Summary

Heater	20 V / 100 mA
Plate	S2: 300 V / 3 W
Screen	S2: 0.6 W
rP	S2: 250,000 Ω
gm	S2: 3.8 mA/V

Sections

2

Diode and sharp-cutoff pentode for detection and IF amplification.

Base

—

Socket code

—

Electrical Summary

Heater	12.6 V / 150 mA
Plate	S3: 300 V / 2.25 W
Screen	S3: 125 V / 0.3 W
Rectifier	S1: 1 mA
rP	S3: 600,000 Ω
gm	S3: 1.325 mA/V

Sections

3

8 pins

Reliable duplex-diode pentode related to the 12C8 family, designed for operation under severe vibration and intermittent service.

Base

9CY

Socket code

B9A

Electrical Summary

Heater	4.7 V / 600 mA
Plate	S2: 300 V / 2.8 W
Screen	S2: 300 V / 0.5 W
Ik max	S1: 5 mA
Rectifier	S1: 5 A
V Inverse	S1: 330 V
rP	S2: 600,000 Ω
gm	S2: 7 mA/V

Sections

2

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

High-perveance diode and sharp-cutoff pentode combination for television IF amplification, video detection, AGC, and DC-restorer service.

Base

9DB

Socket code

B9A

Electrical Summary

Heater	4.7 V / 600 mA
Plate	S2: 300 V / 2.5 W
Screen	S2: 300 V / 0.5 W
Rectifier	S1: 5 A
V Inverse	S1: 330 V
rP	S1: 300 ΩS2: 300,000 Ω
gm	S2: 6.2 mA/V

Sections

2

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

General-purpose combination of a high-perveance diode and sharp-cutoff pentode for receiver detector and amplifier applications.

Base

—

Socket code

B9A

Electrical Summary

Heater	4.7 V / 600 mA
Plate	S3: 300 V / 2 W
Screen	S3: 0.5 W
rP	S3: 300,000 Ω
gm	S3: 6.2 mA/V

Sections

3

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

Indirectly heated double-diode, sharp-cutoff pentode designed for television AFC and detector circuits, IF and video amplification, and automatic gain control. Features a 4.7 V, 600 mA controlled-warm-up heater suitable for series-string operation.

Base

9HK

Socket code

B9A

Electrical Summary

Heater	4.7 V / 600 mA
Plate	S3: 330 V / 3 W
Screen	S3: 330 V / 0.55 W
Ik max	S1: 5 mAS2: 10 mA
rP	S3: 250,000 Ω
gm	S3: 5.2 mA/V

Sections

3

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

Double-diode pentode designed for television detector and amplifier service.

Base

8FW

Socket code

Refer to variations

Electrical Summary

Heater	6.3 V / 200 mA
Plate	S2: 190 V / 0.75 W
Screen	S2: 190 V / 0.4 W
Ik max	S2: 10 mA
rP	S2: 100,000 Ω
gm	S2: 2.5 mA/V
μ	S2: 30

Sections

2

8 pins

Mullard diode-pentode with published amplifier characteristics; available documentation does not establish a sufficiently specific functional role for narrower classification.

Base

—

Socket code

BUTTON12

Electrical Summary

Heater	6.3 V / 600 mA
Plate	S1: 330 V / 2.5 W
Screen	S1: 330 V / 0.55 W
Ik max	S2: 5 mAS3: 5 mA
rP	S1: 150,000 Ω
gm	S1: 10 mA/V

Sections

3

BUTTON12 - Button 12-contact base

Compactron pentode and double-diode combination designed for color-television IF amplification and phase-detector service.

Base

9CY

Socket code

B9A

Electrical Summary

Heater	6.3 V / 450 mA
Plate	S2: 300 V / 3.2 W
Screen	S2: 150 V / 0.55 W
Ik max	S1: 5 mA
rP	S2: 600,000 Ω
gm	S2: 7 mA/V

Sections

2

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

Miniature diode-pentode designed for combined television video-detector and final-IF amplifier service.

Base

9CY

Socket code

B9A

Electrical Summary

Heater	6.3 V / 450 mA
Plate	S2: 330 V / 3.2 W
Screen	S2: 330 V / 0.55 W
rP	S2: 300,000 Ω
gm	S2: 7.8 mA/V

Sections

2

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

High-perveance diode and sharp-cutoff pentode for television IF amplification, video detection, AGC, and DC-restorer service.

Base

9AK

Socket code

B9A

Electrical Summary

Heater	6.3 V / 450 mA
Plate	S1: 200 V / 2.5 W
Screen	S1: 330 V / 0.5 W
Ik max	S2: 5 mA
Rectifier	S2: 5 A
V Inverse	S2: 330 V
rP	S1: 300,000 Ω
gm	S1: 6.2 mA/V

Sections

2

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

High-perveance diode and sharp-cutoff pentode for television or radio IF, video, AGC, detector, and DC-restorer applications.

Base

—

Socket code

IO

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S2: 300 V / 2.25 W
Screen	S2: 125 V / 0.3 W

Sections

3

IO - International Octal

Receiving tube combining radio signal detection or control-voltage rectification with associated voltage amplification. Its detector function is integral to receiver signal processing and supports classification within the radio detector/converter family.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S2: 275 V / 4 W
Screen	S2: 140 V / 0.3 W
gm	S2: 1.85 mA/V

Sections

3

Receiving tube combining radio signal detection or control-voltage rectification with associated voltage amplification. Its detector function is integral to receiver signal processing and supports classification within the radio detector/converter family.

Base

—

Socket code

IO

Electrical Summary

Heater	6.3 V / 300 mA
rP	S2: 800,000 Ω
gm	S2: 1 mA/V

Sections

3

IO - International Octal

Receiving tube combining radio signal detection or control-voltage rectification with associated voltage amplification. Its detector function is integral to receiver signal processing and supports classification within the radio detector/converter family.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 800 mA
Plate	S0: 250 V / 10 W
Screen	S0: 250 V / 2 W
rP	S0: 100,000 Ω
gm	S0: 10 mA/V

Sections

3

9 pins

Australian Radiotron dual-diode audio-output power pentode.

Base

Refer to variations

Socket code

B9A

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S3: 50 V
Screen	S3: 50 V
rP	S3: 200,000 Ω
gm	S3: 2.1 mA/V

Sections

3

B9A - Small-button Noval 9-contact

Double-diode pentode designed for IF amplification, detection, and automatic gain control in automobile radio receivers.

Base

—

Socket code

B9A

Electrical Summary

Heater	6.3 V / 750 mA
Plate	S3: 330 V / 5 W
Screen	S3: 1.1 W
rP	S3: 60,000 Ω
gm	S3: 11.5 mA/V

Sections

3

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

Double-diode pentode combining detector and control-voltage rectification with signal amplification. Paired diodes permit complementary detection or control functions while the pentode supplies the active gain stage.

Base

B7G

Socket code

B7G

Electrical Summary

Heater	6.3 V / 350 mA
Plate	S1: 250 V / 2.5 W
Screen	S1: 250 V / 0.8 W
Ik max	S1: 18 mA
gm	S1: 4.35 mA/V
μ	S1: 38

Sections

2

7 pins - B7G - Miniature 7-contact

High-frequency pentode with auxiliary diode for controlled amplification, mixing, variable-reactance, modulator, and timing applications at HF through UHF.

Base

—

Socket code

B9A

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S2: 330 V
Screen	S2: 330 V
rP	S2: 90,000 Ω
gm	S2: 3.2 mA/V

Sections

2

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

Diode and twin-plate tetrode designed specifically for frequency-divider and complex-wave-generator circuits, combining switching or waveform generation with an integrated rectifying/control diode.

Base

9CY

Socket code

B9A

Electrical Summary

Heater	6.3 V / 450 mA
Plate	S2: 330 V / 3.2 W
Screen	S2: 330 V / 0.55 W
rP	S2: 200,000 Ω
gm	S2: 9.3 mA/V

Sections

2

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

Television diode-pentode combining a video-detector diode with a high-transconductance sharp-cutoff pentode for IF amplification, integrating picture-signal detection and wideband IF gain.

Base

9QG

Socket code

B9A

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S2: 330 V / 1 W
Screen	S2: 330 V / 0.65 W
Ik max	S1: 1 mA
Rectifier	S1: 1 A
rP	S2: 30,000 Ω
gm	S2: 3.4 mA/V
μ	S2: 45

Sections

2

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

Diode and three-plate tetrode for frequency-divider and complex-wave-generator circuits in electronic musical instruments, intended for pulse and timing service rather than ordinary amplification.

Base

B9A

Socket code

—

Electrical Summary

Heater	6.3 V / 725 mA
Plate	S3: 330 V / 4 W
Screen	S3: 1.1 W
rP	S3: 50,000 Ω
gm	S3: 20 mA/V

Sections

3

9 pins

Diode-pentode intended for television IF and video-detector service, combining a high-frequency pentode amplifier with a diode for picture-signal rectification.

Base

9RL

Socket code

B9A

Electrical Summary

Heater	6.3 V / 600 mA
Plate	S1: 330 V / 3.1 W
Screen	S1: 330 V / 0.65 W
Ik max	S2: 5 mAS3: 5 mA
rP	S1: 200,000 Ω
gm	S1: 13 mA/V

Sections

3

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

Television diode-pentode combining IF amplification with video detection, allowing the pentode to provide wideband gain while the diode recovers the detected picture signal.

Base

—

Socket code

B9A

Electrical Summary

Heater	8 V / 450 mA
Plate	S2: 300 V
gm	S2: 9 mA/V

Sections

3

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

Series-heater diode-pentode for television IF amplification and video detection, integrating a high-transconductance pentode with a separate detector diode.

Base

9RL

Socket code

B9A

Electrical Summary

Heater	8.1 V / 450 mA
Plate	S3: 330 V / 3.1 W
Screen	S3: 330 V / 0.65 W
Ik max	S2: 5 mA
rP	S3: 200,000 Ω
gm	S3: 13 mA/V

Sections

3

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

Series-string television diode-pentode intended for IF and video-detector service, combining wideband pentode amplification with a dedicated signal-detection diode.

Base

—

Socket code

—

Electrical Summary

Heater	20 V / 180 mA
Plate	S2: 200 V
Screen	S2: 200 V / 0.25 W
gm	S2: 1.2 mA/V

Sections

2

Philips binode combining a signal diode with an amplifying tetrode for receiver detection and signal amplification, integrating two radio signal-processing functions in one envelope.