Electronic tube and vacuum tube catalog

Base

9DP

Socket code

B9A

Electrical Summary

Heater	10 V / 450 mA
Plate	S1: 300 V / 2.5 WS2: 300 V / 2.5 W
Screen	S1: 300 VS2: 300 V
rP	S1: 50,000 ΩS2: 50,000 Ω
gm	S1: 6 mA/VS2: 6 mA/V

Sections

2

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

Twin-pentode television tube used as a combined color demodulator and matrix amplifier in high-level color-demodulation systems.

Base

12DM

Socket code

B12C

Electrical Summary

Heater	11.2 V / 450 mA
Plate	S1: 300 V / 2.5 WS2: 300 V / 2.5 W
Screen	S1: 300 V / 0.65 WS2: 300 V / 0.65 W
rP	S1: 200,000 ΩS2: 200,000 Ω
gm	S1: 10.5 mA/VS2: 10.5 mA/V

Sections

2

12 pins - B12C - Duodecar 12-contact

Duodecar twin semiremote-cutoff pentode designed for television intermediate-frequency amplifier stages.

Base

12DM

Socket code

B12C

Electrical Summary

Heater	11.2 V / 450 mA
Plate	S1: 330 V / 3.1 WS2: 330 V / 3.1 W
Screen	S1: 330 V / 0.65 WS2: 330 V / 0.65 W
rP	S1: 200,000 ΩS2: 200,000 Ω
gm	S1: 10.5 mA/VS2: 13 mA/V

Sections

2

12 pins - B12C - Duodecar 12-contact

Duodecar dual semiremote-cutoff pentode designed specifically for television intermediate-frequency amplification.

Base

Refer to variations

Socket code

Refer to variations

Electrical Summary

Heater	11 V / 450 mA
Plate	S1: 275 V / 5.8 WS2: 275 V / 1.75 W
Screen	S1: 275 V / 2.9 WS2: 275 V / 0.6 W
Ik max	S1: 66 mAS2: 16.5 mA
rP	S1: 40,000 ΩS2: 160,000 Ω
gm	S1: 21 mA/VS2: 8.5 mA/V

Sections

2

Refer to variations

Base

12HB

Socket code

—

Electrical Summary

Heater	12.6 V / 450 mA
Plate	S1: 300 V / 1.7 WS2: 330 V / 3.1 W
Screen	S1: 300 VS2: 330 V / 0.65 W
rP	S1: 170,000 ΩS2: 200,000 Ω
gm	S1: 3.2 mA/VS2: 13 mA/V

Sections

2

12 pins

Compactron sharp-cutoff twin pentode designed as color-demodulator elements in color television receivers.

Base

9QZ

Socket code

B9A

Electrical Summary

Heater	15 V / 300 mA
Plate	S1: 300 V / 2 WS2: 300 V / 2 W
Screen	S1: 150 VS2: 150 V
rP	S1: 50,000 ΩS2: 50,000 Ω

Sections

2

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

Twin-pentode television tube used as a combined color demodulator and matrix amplifier in high-level color-demodulation systems.

Base

12DM

Socket code

B12C

Electrical Summary

Heater	16 V / 315 mA
Plate	S1: 330 V / 3.1 WS2: 330 V / 3.1 W
Screen	S1: 330 V / 0.65 WS2: 330 V / 0.65 W
rP	S1: 200,000 ΩS2: 200,000 Ω
gm	S1: 10.5 mA/VS2: 13 mA/V

Sections

2

12 pins - B12C - Duodecar 12-contact

Semiremote-cutoff dual pentode designed for television intermediate-frequency amplification, electrically cross-referenced to the 11BQ11 apart from heater characteristics.

Base

G-8C

Socket code

IO

Electrical Summary

Heater	2 V / 240 mA
Plate	S1: 135 VS2: 135 V
Screen	S1: 135 VS2: 135 V
rP	S1: 260,000 ΩS2: 260,000 Ω
gm	S1: 1.425 mA/VS2: 1.425 mA/V
μ	S1: 370S2: 370

Sections

2

8 pins - IO - International Octal

Directly heated twin power pentode containing two identical sections for push-pull audio output in battery-operated receivers.

Base

8C

Socket code

IO

Electrical Summary

Heater	2 V / 240 mA
Plate	S1: 135 VS2: 135 V
Screen	S1: 135 VS2: 135 V
rP	S1: 260,000 ΩS2: 260,000 Ω
gm	S1: 1.425 mA/VS2: 1.425 mA/V

Sections

2

8 pins - IO - International Octal

GT-envelope directly heated twin power pentode designed for push-pull audio-output service in battery receivers.

Base

—

Socket code

UX7

Electrical Summary

Heater	2 V / 260 mA
gm	S1: 1.6 mA/VS2: 1.6 mA/V

Sections

2

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

Battery double pentode designed specifically for push-pull audio-output power service.

Base

Refer to variations

Socket code

B9A

Electrical Summary

Heater	3.15 V / 600 mA
Plate	S1: 300 V / 1.1 WS2: 300 V / 1.1 W
Screen	S1: 150 V / 0.75 WS2: 150 V / 0.75 W
Ik max	S1: 12 mAS2: 12 mA
gm	S1: 1 mA/VS2: 1 mA/V

Sections

2

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

Sharp-cutoff twin pentode designed as combined television sync separator, sync clipper, and automatic-gain-control amplifier.

Base

Refer to variations

Socket code

B9A

Electrical Summary

Heater	3.15 V / 600 mA
Plate	S1: 300 V / 1.1 WS2: 300 V / 1.1 W
Screen	S1: 150 V / 1 WS2: 150 V / 1 W
Ik max	S1: 12 mAS2: 12 mA
gm	S1: 1.5 mA/VS2: 1.5 mA/V

Sections

2

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

Sharp-cutoff twin pentode designed as combined television sync separator, sync clipper, and automatic-gain-control amplifier.

Base

—

Socket code

B9A

Electrical Summary

Heater	3.15 V / 600 mA
Plate	S1: 300 V / 1.7 WS2: 300 V / 1.7 W
Screen	S1: 150 V / 0.75 WS2: 150 V / 0.75 W
Ik max	S1: 22 mAS2: 22 mA
gm	S1: 1.1 mA/VS2: 1.1 mA/V

Sections

2

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

Twin pentode designed for television AGC, sync-separator, sync-clipper, and noise-gating service.

Base

Refer to variations

Socket code

B9A

Electrical Summary

Heater	4.2 V / 450 mA
Plate	S1: 300 V / 1.1 WS2: 300 V / 1.1 W
Screen	S1: 150 V / 0.75 WS2: 150 V / 0.75 W
Ik max	S1: 12 mAS2: 12 mA
gm	S1: 1.5 mA/VS2: 1.5 mA/V

Sections

2

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

Sharp-cutoff twin pentode designed as combined television sync separator, sync clipper, and automatic-gain-control amplifier.

Base

Refer to variations

Socket code

B9A

Electrical Summary

Heater	4.2 V / 450 mA
Plate	S1: 300 V / 1.1 WS2: 300 V / 1.1 W
Screen	S1: 150 V / 0.75 WS2: 150 V / 0.75 W
Ik max	S1: 12 mAS2: 12 mA
gm	S1: 1.2 mA/VS2: 0.27 mA/V

Sections

2

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

Sharp-cutoff twin pentode designed as combined television sync separator, sync clipper, and automatic-gain-control amplifier.

Base

Refer to variations

Socket code

B9A

Electrical Summary

Heater	4.2 V / 450 mA
Plate	S1: 300 V / 1.1 WS2: 300 V / 1.1 W
Screen	S1: 150 V / 0.75 WS2: 150 V / 0.75 W
Ik max	S1: 12 mAS2: 12 mA

Sections

2

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

Twin pentode designed for television AGC, sync-separator, sync-clipper, and noise-gating service.

Base

9F6

Socket code

B9A

Electrical Summary

Heater	4.2 V / 450 mA
Plate	S1: 300 V / 1.1 WS2: 300 V / 1.1 W
Screen	S1: 150 V / 0.75 WS2: 150 V / 0.75 W
Ik max	S1: 32 mAS2: 32 mA
gm	S1: 1.1 mA/VS2: 1.1 mA/V

Sections

2

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

Sharp-cutoff twin pentode for television sync separation, clipping, AGC, and low-level color-demodulator circuits.

Base

—

Socket code

SUBMINIATURE8

Electrical Summary

Heater	1.25 V / 160 mA
Ik max	S1: 5 mAS2: 5 mA
rP	S1: 170,000 ΩS2: 170,000 Ω
gm	S1: 1.85 mA/VS2: 1.85 mA/V

Sections

2

8 pins - SUBMINIATURE8 - Subminiature 8-lead base

Directly heated subminiature dual remote-cutoff pentode designed for Class-A VHF radio-frequency amplification.

Base

—

Socket code

B10B

Electrical Summary

Heater	6.3 V / 850 mA
Plate	S1: 250 V / 5.1 WS2: 250 V / 1.5 W
Screen	S1: 250 VS2: 250 V
Ik max	S1: 60 mAS2: 15 mA
rP	S1: 32,000 ΩS2: 160,000 Ω
gm	S1: 22 mA/VS2: 8.5 mA/V

Sections

2

10 pins - B10B - Decal 10-contact

Dissimilar dual pentode for television receivers, combining a video-output section with a sound-IF, AGC, and sync-separator section.

Base

12DM

Socket code

B12C

Electrical Summary

Heater	6.3 V / 800 mA
Plate	S1: 330 V / 3.1 WS2: 330 V / 3.1 W
Screen	S1: 330 V / 0.65 WS2: 330 V / 0.65 W
rP	S1: 200,000 ΩS2: 200,000 Ω
gm	S1: 10.5 mA/VS2: 10.5 mA/V

Sections

2

12 pins - B12C - Duodecar 12-contact

Semiremote-cutoff twin pentode designed as an intermediate-frequency amplifier in television receivers.

Base

—

Socket code

B12C

Electrical Summary

Heater	6.3 V / 800 mA
Plate	S1: 330 V / 3.1 WS2: 330 V / 3.1 W
Screen	S1: 330 V / 0.65 WS2: 330 V / 0.65 W
rP	S1: 200,000 ΩS2: 200,000 Ω
gm	S1: 13 mA/VS2: 13 mA/V

Sections

2

12 pins - B12C - Duodecar 12-contact

Compactron twin pentode designed for television intermediate-frequency amplification.

Base

—

Socket code

B12C

Electrical Summary

Heater	10.6 V / 450 mA
Plate	S1: 125 V / 3.1 WS2: 125 V / 3.1 W
Screen	S1: 330 VS2: 330 V
gm	S1: 13 mA/VS2: 13 mA/V

Sections

2

12 pins - B12C - Duodecar 12-contact

Twin pentode designed for television receiver applications; available documentation does not establish a more specific role than general television signal amplification.

Base

9FG

Socket code

B9A

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S1: 300 V / 1.1 WS2: 100 V / 1 W
Screen	S1: 150 V / 0.75 WS2: 150 V / 0.75 W
Ik max	S1: 12 mA
gm	S1: 1.5 mA/VS2: 0.18 mA/V

Sections

2

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

Sharp-cutoff twin pentode designed for television sync-separator, sync-clipper, and AGC-amplifier service.

Base

12HB

Socket code

B12C

Electrical Summary

Heater	6.3 V / 900 mA
Plate	S1: 300 V / 1.7 WS2: 300 V / 1.7 W
Screen	S1: 300 V / 1 WS2: 300 V
rP	S1: 200,000 Ω
gm	S1: 3.7 mA/VS2: 3.2 mA/V
μ	S1: 70S2: 67

Sections

2

12 pins - B12C - Duodecar 12-contact

Compactron twin dual-control sharp-cutoff pentode designed as color-demodulator elements in color television receivers.

Base

—

Socket code

B12C

Electrical Summary

Heater	6.3 V / 800 mA
Plate	S1: 330 V / 4 WS2: 330 V / 3.1 W
Screen	S1: 330 V / 0.8 WS2: 330 V / 0.65 W
rP	S1: 120,000 ΩS2: 200,000 Ω
gm	S1: 8.5 mA/VS2: 13 mA/V

Sections

2

12 pins - B12C - Duodecar 12-contact

Dual pentode designed for television video, bandpass, burst, sound-IF, and video-IF signal-processing applications.

Base

—

Socket code

B12C

Electrical Summary

Heater	6.3 V / 1.2 A

Sections

2

12 pins - B12C - Duodecar 12-contact

Dissimilar dual-pentode Compactron combining an audio power-output amplifier and a dual-control pentode for FM detector service. Uses a 6.3 V, 1.2 A heater and 12EZ basing.

Base

9FG

Socket code

B9A

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S1: 300 V / 1.1 WS2: 300 V / 1.1 W
Screen	S1: 150 V / 0.75 WS2: 150 V / 0.75 W
Ik max	S1: 12 mAS2: 12 mA
gm	S1: 1.2 mA/VS2: 1.2 mA/V

Sections

2

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

Twin pentode with shared control electrodes designed for combined television sync and automatic-gain-control functions.

Base

9FC

Socket code

B9A

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S1: 300 V / 1.1 WS2: 300 V / 1.1 W
Screen	S1: 150 V / 0.75 WS2: 150 V / 0.75 W
Ik max	S1: 12 mAS2: 12 mA
rP	S1: 4,600 ΩS2: 4,600 Ω
gm	S1: 1.1 mA/VS2: 1.1 mA/V
μ	S1: 300S2: 300

Sections

2

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

Twin pentode designed for television AGC, sync separation, sync clipping, and noise-limiting circuits in color and monochrome receivers.

Base

—

Socket code

B12C

Electrical Summary

Heater	6.3 V / 800 mA
Plate	S1: 330 V / 3.1 WS2: 330 V / 3.1 W
Screen	S1: 0.65 WS2: 0.65 W
rP	S1: 200,000 ΩS2: 200,000 Ω
gm	S1: 13 mA/VS2: 13 mA/V

Sections

2

12 pins - B12C - Duodecar 12-contact

Compactron containing two sharp-cutoff pentodes designed primarily for television intermediate-frequency amplification, providing paired high-gain sections for multistage picture or sound IF service.

Base

9QZ

Socket code

B9A

Electrical Summary

Heater	6.3 V / 750 mA
Plate	S1: 300 V / 2 WS2: 300 V / 2 W
Screen	S1: 150 V / 2 WS2: 150 V / 2 W
rP	S1: 50,000 ΩS2: 50,000 Ω
gm	S1: 11 mA/VS2: 11 mA/V

Sections

2

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

Twin pentode designed for color-television chroma processing, combining color demodulation with matrix amplification in one compact receiving tube.

Base

B9A

Socket code

—

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S1: 300 V / 1.1 WS2: 300 V / 1.1 W
Screen	S1: 150 V / 0.75 WS2: 150 V / 0.75 W
Ik max	S1: 12 mAS2: 12 mA

Sections

2

9 pins

The 6MK8 is a miniature double-pentode designed for television chrominance demodulation, synchronization separation, clipping, and automatic-gain-control circuits. Its paired controlled sections share a common envelope and offer versatile signal-processing functions for color television receiving equipment.

Base

9F6

Socket code

B9A

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S1: 300 V / 1.1 WS2: 300 V / 1.1 W
Screen	S1: 67.5 VS2: 67.5 V
Ik max	S1: 32 mAS2: 32 mA
rP	S1: 6,250 ΩS2: 6,250 Ω
gm	S1: 7.5 mA/VS2: 7.5 mA/V

Sections

2

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

Dissimilar pentode pair for television sync separation, clipping, AGC, and low-level color-demodulator circuits, integrating several pulse and chroma-processing functions.

Base

12EZ

Socket code

B12C

Electrical Summary

Heater	6.3 V / 830 mA
Plate	S1: 300 V / 4.8 WS2: 300 V / 1.7 W
Screen	S1: 300 V / 1.1 WS2: 300 V / 1 W
Ik max	S1: 30 mAS2: 20 mA
rP	S1: 150,000 ΩS2: 140,000 Ω
gm	S1: 8.4 mA/VS2: 3.7 mA/V

Sections

2

12 pins - B12C - Duodecar 12-contact

Compactron with dissimilar pentodes combining an audio power-output section with a dual-control pentode for television FM sound detection.

Base

Refer to variations

Socket code

Refer to variations

Electrical Summary

Heater	6.3 V / 800 mA
Plate	S1: 550 VS2: 550 V
Screen	S1: 550 VS2: 550 V
Ik max	S1: 60 mAS2: 15 mA
rP	S1: 40,000 ΩS2: 160,000 Ω

Sections

2

10 pins

Dissimilar dual pentode for television receivers, combining video-output amplification with a second section usable for sound IF, AGC, or sync separation.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V
Plate	S1: 275 V / 3 WS2: 275 V / 3 W
Screen	S1: 1.25 WS2: 1.25 W
Ik max	S1: 50 mAS2: 50 mA
gm	S1: 7.5 mA/VS2: 7.5 mA/V

Sections

2

Long-life wideband push-pull amplifier tube for test instruments, distributed amplifiers, and computers, using two sections with common screen and cathode.

Base

12DM

Socket code

B12C

Electrical Summary

Heater	8.4 V / 600 mA
Plate	S1: 330 V / 3.1 WS2: 330 V / 3.1 W
Screen	S1: 330 VS2: 330 V
rP	S1: 200,000 ΩS2: 200,000 Ω
gm	S1: 10.5 mA/VS2: 10.5 mA/V

Sections

2

12 pins - B12C - Duodecar 12-contact

Semiremote-cutoff twin pentode designed specifically for television intermediate-frequency amplification, providing paired controlled-gain sections for receiver IF strips.

Base

12FU

Socket code

B12C

Electrical Summary

Heater	8.4 V / 450 mA
Plate	S1: 160 V / 2.2 WS2: 160 V / 2.2 W
Screen	S1: 160 V / 0.55 WS2: 160 V / 0.55 W
rP	S1: 220,000 ΩS2: 300,000 Ω
gm	S1: 8.8 mA/VS2: 8.5 mA/V

Sections

2

12 pins - B12C - Duodecar 12-contact

Dissimilar dual-pentode television IF amplifier combining a semiremote-cutoff first section with a sharp-cutoff second section for cascaded controlled-gain amplification.

Base

—

Socket code

B12C

Electrical Summary

Heater	8.4 V / 600 mA

Sections

2

12 pins - B12C - Duodecar 12-contact

Compactron containing two sharp-cutoff pentodes intended primarily for television intermediate-frequency amplifier service, providing two similar high-gain stages in one envelope.

Base

12DM

Socket code

B12C

Electrical Summary

Heater	8.4 V / 600 mA
Plate	S1: 330 V / 3.1 WS2: 330 V / 3.1 W
Screen	S1: 330 VS2: 330 V
rP	S1: 200,000 ΩS2: 200,000 Ω
gm	S1: 10.5 mA/VS2: 13 mA/V

Sections

2

12 pins - B12C - Duodecar 12-contact

Semiremote-cutoff dual pentode intended for television intermediate-frequency amplification, integrating two controlled-gain pentode stages in one Compactron envelope.

Base

12DM

Socket code

B12C

Electrical Summary

Heater	8.4 V / 600 mA
Plate	S1: 330 V / 3.1 WS2: 330 V / 3.1 W
Screen	S1: 330 V / 0.66 WS2: 330 V / 0.66 W
rP	S1: 200,000 ΩS2: 200,000 Ω
gm	S1: 13 mA/VS2: 13 mA/V

Sections

2

12 pins - B12C - Duodecar 12-contact

Color-television Compactron with two sharp-cutoff pentodes for IF amplification, also usable as bandpass, burst, and low-level video amplifiers.

Base

—

Socket code

—

Electrical Summary

Heater	8 V / 600 mA
Plate	S1: 300 V / 2 WS2: 300 V / 2 W
Screen	S1: 150 V / 2 WS2: 150 V / 2 W
gm	S1: 5.8 mA/VS2: 5.8 mA/V

Sections

2

Base

—

Socket code

—

Electrical Summary

Heater	1.4 V / 100 mA
Plate	S1: 135 V / 0.5 WS2: 135 V / 0.5 W
Screen	S1: 135 V / 0.4 WS2: 135 V / 0.4 W
Ik max	S1: 25 mAS2: 25 mA

Sections

2

Directly heated dual output pentode designed for Class-B push-pull or parallel Class-A audio power service in battery-operated equipment.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 600 mA
Plate	S1: 300 VS2: 300 V
Screen	S1: 225 VS2: 225 V
rP	S1: 350,000 ΩS2: 350,000 Ω
gm	S1: 8 mA/VS2: 8 mA/V

Sections

2

Twin RF pentode designed for ultra-short-wave push-pull and wideband parallel amplification, combining two matched high-frequency amplifier sections.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 600 mA
Plate	S1: 300 VS2: 300 V
Screen	S1: 225 VS2: 225 V
rP	S1: 350,000 ΩS2: 350,000 Ω
gm	S1: 7.5 mA/VS2: 7.5 mA/V

Sections

2

Twin RF pentode designed for push-pull ultra-short-wave amplification to approximately 500 MHz, providing two matched sections for VHF service.

Base

Refer to variations

Socket code

B10B

Electrical Summary

Heater	6.3 V / 810 mA
Plate	S1: 250 V / 5 WS2: 250 V / 2.5 W
Screen	S1: 250 V / 1.5 WS2: 250 V / 0.6 W
Ik max	S1: 60 mAS2: 25 mA
rP	S1: 100,000 ΩS2: 500,000 Ω
gm	S1: 18 mA/VS2: 5.5 mA/V

Sections

2

10 pins - B10B - Decal 10-contact

Dual pentode designed for television video-frequency amplification and sync-separator service, integrating wideband video gain and pulse separation in one envelope.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 650 mA
Plate	S1: 250 V / 4.5 WS2: 250 V / 4.5 W
gm	S1: 1.8 mA/VS2: 1.8 mA/V

Sections

2

Dual output pentode intended for push-pull automobile-receiver audio stages, integrating two matched power sections for compact low-frequency output service.

Base

—

Socket code

IO

Electrical Summary

Heater	2 V / 300 mA
gm	S1: 2.6 mA/VS2: 2.6 mA/V

Sections

2

8 pins - IO - International Octal

Battery-operated double output pentode designed for push-pull audio power amplification, combining two directly heated power sections in one envelope.

Base

Refer to variations

Socket code

Refer to variations

Electrical Summary

Refer to variations

Sections

2

Refer to variations

Base

—

Socket code

—

Electrical Summary

Heater	12.6 V
Plate	S1: 300 V / 3 WS2: 300 V / 3 W
Screen	S1: 300 V / 0.6 WS2: 300 V / 0.6 W
Ik max	S1: 25 mAS2: 25 mA
rP	S1: 300,000 ΩS2: 300,000 Ω

Sections

2

Matched push-pull dual pentode for broadband receiving and externally driven low-power transmitting stages, combining two RF sections with a common cathode.

Base

B10B

Socket code

B10B

Electrical Summary

Heater	17 V / 300 mA
Plate	S1: 250 V / 5.1 WS2: 250 V / 1.5 W
Screen	S1: 230 V / 2.5 WS2: 250 V / 0.5 W
Ik max	S1: 60 mAS2: 15 mA
rP	S1: 33,000 ΩS2: 150,000 Ω
gm	S1: 22 mA/VS2: 8.5 mA/V

Sections

2

10 pins - B10B - Decal 10-contact

Series-heater dual pentode for television video-frequency amplification and sync-separator service, integrating wideband signal amplification and pulse processing.