Electronic tube and vacuum tube catalog

Base

9NF

Socket code

B9A

Sections

2

Heater

10.6 V / 500 mA

Plate

S1: 330 V / 1.5 W · S2: 330 V / 10 W

Ik max

S1: 22 mA · S2: 40 mA

rP

S1: 7,700 Ω · S2: 1,100 Ω

gm

S1: 2.6 mA/V · S2: 4.7 mA/V

μ

S1: 20 · S2: 6.3

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

Dissimilar dual triode developed for television vertical deflection, combining a medium-mu oscillator section with a low-mu, high-dissipation output amplifier capable of substantial pulse operation.

Base

9HF

Socket code

B9A

Sections

2

Heater

9.7 V / 600 mA

Plate

S1: 330 V / 1.6 W · S2: 275 V / 7 W

Ik max

S1: 22 mA · S2: 60 mA

rP

S1: 8,750 Ω · S2: 925 Ω

gm

S1: 2 mA/V · S2: 6.5 mA/V

μ

S1: 17.5 · S2: 6

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

Dissimilar dual triode for television vertical deflection, pairing an oscillator triode with a low-resistance power section rated for high positive plate pulses in vertical-output service.

Base

9NF

Socket code

B9A

Sections

2

Heater

9.7 V / 600 mA

Plate

S1: 330 V / 1 W · S2: 275 V / 7 W

Ik max

S1: 20 mA · S2: 50 mA

rP

S1: 40,000 Ω · S2: 925 Ω

gm

S1: 1.6 mA/V · S2: 6.5 mA/V

μ

S1: 68 · S2: 6

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

Dissimilar dual triode for television vertical deflection, combining a high-mu oscillator section with a low-mu, high-current output triode designed for pulsed vertical-amplifier operation.

Base

8BD

Socket code

B9A

Sections

2

Heater

9.7 V / 600 mA

Plate

S1: 330 V / 1.5 W · S2: 330 V / 10 W

Ik max

S1: 22 mA · S2: 40 mA

rP

S1: 8,750 Ω · S2: 800 Ω

gm

S1: 2 mA/V · S2: 7.5 mA/V

μ

S1: 17.5 · S2: 6

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

Dissimilar television vertical-deflection dual triode combining an oscillator section with a low-mu, high-transconductance output amplifier rated for 10 W plate dissipation and high pulse voltage.

Base

8B0

Socket code

IO

Sections

2

Heater

9.7 V / 600 mA

Plate

S1: 330 V / 1.5 W · S2: 330 V / 10 W

Ik max

S1: 77 mA · S2: 175 mA

rP

S1: 40,000 Ω · S2: 1,000 Ω

gm

S1: 1.5 mA/V · S2: 7 mA/V

μ

S1: 60 · S2: 6

8 pins - IO - International Octal

Dissimilar dual triode combining a high-mu voltage-amplifier section with a low-mu 10 W power section, suited to circuits requiring voltage gain followed by substantial current drive.

Base

9NF

Socket code

B9A

Sections

2

Heater

9.7 V / 600 mA

Plate

S1: 220 V / 1.5 W · S2: 330 V / 10 W

Ik max

S1: 22 mA · S2: 40 mA

rP

S1: 8,750 Ω · S2: 800 Ω

gm

S1: 2 mA/V · S2: 7.5 mA/V

μ

S1: 17.4 · S2: 6

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

Dissimilar dual triode for television vertical deflection, combining an oscillator section with a low-mu, high-transconductance 10 W output amplifier designed for high pulse voltages.

Base

Refer to variations

Socket code

Refer to variations

Sections

2

Heater

9.7 V / 600 mA

Plate

S1: 330 V / 1.5 W · S2: 330 V / 10 W

Ik max

S1: 20 mA · S2: 50 mA

rP

S1: 40,000 Ω · S2: 800 Ω

gm

S1: 1.6 mA/V · S2: 7.5 mA/V

μ

S1: 64 · S2: 6

Refer to variations

Base

—

Socket code

B9E

Sections

2

Heater

9.7 V / 600 mA

Plate

S1: 330 V / 2 W · S2: 330 V / 11 W

rP

S1: 40,000 Ω · S2: 1,000 Ω

gm

S1: 2.7 mA/V · S2: 7 mA/V

μ

S1: 46 · S2: 6.4

9 pins - B9E - Novar 9-contact

Dissimilar dual triode specifically intended for television vertical-deflection oscillator and amplifier service, combining a high-gain section with a low-mu, high-dissipation output section.

Base

9NF

Socket code

—

Sections

2

Heater

11 V / 450 mA

Plate

S1: 350 V / 1 W · S2: 350 V / 5.5 W

Ik max

S2: 35 mA

rP

S1: 42,000 Ω · S2: 920 Ω

gm

S1: 1.3 mA/V · S2: 5.4 mA/V

μ

S1: 68 · S2: 5

9 pins

Dissimilar dual triode combining a high-mu voltage section with a low-resistance power triode capable of substantial pulse voltage, characteristic of television vertical-deflection circuitry.

Base

9HF

Socket code

B9A

Sections

2

Heater

13 V / 450 mA

Plate

S1: 330 V / 1.5 W · S2: 275 V / 7 W

Ik max

S1: 22 mA · S2: 50 mA

rP

S1: 8,750 Ω · S2: 925 Ω

gm

S1: 2 mA/V · S2: 6.5 mA/V

μ

S1: 17.5 · S2: 6

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

Dissimilar dual triode for television vertical-deflection oscillator and amplifier service. A higher-mu section supplies oscillator/voltage-gain duty while the low-mu 7 W section provides the high-current vertical-output function.

Base

9HF

Socket code

B9A

Sections

2

Heater

13 V / 450 mA

Plate

S1: 330 V / 1 W · S2: 275 V / 7 W

Ik max

S1: 20 mA · S2: 50 mA

rP

S1: 40,000 Ω · S2: 925 Ω

gm

S1: 1.6 mA/V · S2: 6.5 mA/V

μ

S1: 65 · S2: 6

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

Dissimilar dual triode developed for combined television vertical-deflection oscillator and amplifier service. Its high-mu small-signal section works with a low-mu 7 W output section rated for high pulse voltage and current.

Base

8B0

Socket code

IO

Sections

2

Heater

13 V / 450 mA

Plate

S1: 330 V / 1.5 W · S2: 330 V / 10 W

Ik max

S1: 22 mA · S2: 50 mA

rP

S1: 40,000 Ω · S2: 750 Ω

gm

S1: 1.4 mA/V · S2: 7.2 mA/V

μ

S1: 57 · S2: 5.4

8 pins - IO - International Octal

Dissimilar dual triode for combined television vertical-deflection oscillator and amplifier service. The high-mu oscillator section is paired with a low-mu power section having 10 W plate dissipation and strong pulse-current capability.

Base

9HF

Socket code

B9A

Sections

2

Heater

13 V / 450 mA

Plate

S1: 330 V / 1.5 W · S2: 330 V / 10 W

Ik max

S1: 20 mA · S2: 50 mA

rP

S1: 40,000 Ω · S2: 1,000 Ω

gm

S1: 1.5 mA/V · S2: 7 mA/V

μ

S1: 60 · S2: 6

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

Dissimilar dual triode containing high- and low-mu sections for combined television vertical-deflection oscillator and amplifier service. The power section is rated for 10 W plate dissipation and demanding pulsed output operation.

Base

12EJ

Socket code

B12C

Sections

2

Heater

13 V / 450 mA

Plate

S1: 330 V / 1.5 W · S2: 330 V / 10 W

Ik max

S1: 20 mA · S2: 50 mA

rP

S1: 40,000 Ω · S2: 1,000 Ω

gm

S1: 1.5 mA/V · S2: 7 mA/V

μ

S1: 60 · S2: 6

12 pins - B12C - Duodecar 12-contact

Duodecar dissimilar dual triode designed for television vertical-deflection systems, combining an oscillator section with a low-mu power-amplifier section. Published ratings include 10 W plate dissipation and high pulse-voltage capability.

Base

—

Socket code

—

Sections

2

Heater

13 V / 450 mA

Plate

S1: 330 V / 1.5 W · S2: 330 V / 10 W

Ik max

S2: 50 mA

rP

S1: 40,000 Ω · S2: 1,000 Ω

gm

S1: 1.5 mA/V · S2: 7 mA/V

μ

S1: 60 · S2: 6.4

Dissimilar dual triode in the 6GF7/10GF7/13GF7 family, intended for television vertical-deflection oscillator and amplifier service. Its low-mu output section carries substantially greater plate dissipation than the companion oscillator section.

Base

—

Socket code

B9E

Sections

2

Heater

13 V / 450 mA

Plate

S1: 330 V / 11 W · S2: 330 V / 1.5 W

Ik max

S1: 175 mA · S2: 20 mA

rP

S1: 760 Ω · S2: 40,000 Ω

gm

S1: 7.2 mA/V · S2: 1.5 mA/V

μ

S1: 6 · S2: 60

9 pins - B9E - Novar 9-contact

Novar dissimilar dual triode for combined television vertical-deflection oscillator and amplifier service. It pairs a small-signal oscillator section with a low-mu 10 W power section designed for high pulse-voltage operation.

Base

8B0

Socket code

IO

Sections

2

Heater

14.8 V / 450 mA

Plate

S1: 350 V / 1 W · S2: 550 V / 10 W

Ik max

S1: 20 mA · S2: 175 mA

rP

S1: 30,000 Ω · S2: 900 Ω

gm

S1: 2.2 mA/V · S2: 6.7 mA/V

μ

S1: 65 · S2: 6

8 pins - IO - International Octal

Dissimilar dual triode for combined television vertical-deflection oscillator and amplifier service. Its high-mu oscillator section drives a low-mu 10 W output section capable of substantial peak current and kilovolt-level pulse voltage.

Base

—

Socket code

—

Sections

2

Heater

13 V / 450 mA

Plate

S1: 330 V / 1.5 W · S2: 330 V / 10 W

rP

S1: 40,000 Ω · S2: 750 Ω

gm

S1: 1.6 mA/V · S2: 7.2 mA/V

μ

S1: 64 · S2: 5.4

Base

9HF

Socket code

B9A

Sections

2

Heater

14.8 V / 450 mA

Plate

S1: 330 V / 1.5 W · S2: 330 V / 10 W

Ik max

S1: 22 mA · S2: 50 mA

rP

S1: 8,750 Ω · S2: 800 Ω

gm

S1: 2 mA/V · S2: 7.5 mA/V

μ

S1: 17.5 · S2: 6

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

Dissimilar dual triode designed for combined television vertical-deflection oscillator and amplifier service. It combines a small-signal oscillator section with a 10 W power section and published high pulse-voltage ratings.

Base

12EJ

Socket code

B12C

Sections

2

Heater

14.8 V / 450 mA

Plate

S1: 330 V / 1.5 W · S2: 330 V / 10 W

Ik max

S1: 20 mA · S2: 50 mA

rP

S1: 40,000 Ω · S2: 1,000 Ω

gm

S1: 1.5 mA/V · S2: 7 mA/V

μ

S1: 60 · S2: 6

12 pins - B12C - Duodecar 12-contact

Duodecar dissimilar dual triode for television vertical-deflection oscillator and amplifier service. One section serves as the oscillator while the second is a low-mu 10 W power amplifier designed for pulsed deflection duty.

Base

12E0

Socket code

B12C

Sections

2

Heater

14.7 V / 450 mA

Plate

S1: 330 V / 1.5 W · S2: 330 V / 10 W

Ik max

S1: 20 mA · S2: 50 mA

rP

S1: 40,000 Ω · S2: 1,000 Ω

gm

S1: 1.5 mA/V · S2: 7 mA/V

μ

S1: 60 · S2: 6

12 pins - B12C - Duodecar 12-contact

Duodecar dissimilar dual triode intended for combined television vertical-deflection oscillator and amplifier service. Its paired sections provide oscillator drive and 10 W power-output capability, with peak plate-pulse ratings reaching about 2 kV.

Base

—

Socket code

B9A

Sections

2

Heater

19.4 V / 300 mA

Plate

S1: 330 V / 1.5 W · S2: 275 V / 7 W

Ik max

S1: 22 mA · S2: 50 mA

rP

S1: 8,750 Ω · S2: 925 Ω

gm

S1: 2 mA/V · S2: 6.5 mA/V

μ

S1: 17.5 · S2: 6

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

Dissimilar television twin triode combining a vertical-deflection oscillator with a low-mu, high-current vertical-deflection amplifier; the output section carries a high positive-pulse plate-voltage rating.

Base

—

Socket code

—

Sections

2

Heater

18.9 V / 300 mA

Plate

S0: 330 V · S1: 330 V / 10 W

Ik max

S1: 50 mA

rP

S0: 8,750 Ω · S1: 800 Ω

gm

S0: 2 mA/V · S1: 7.5 mA/V

μ

S0: 17.5 · S1: 6

9 pins

Dissimilar dual triode for television vertical oscillator and deflection amplifier.

Base

—

Socket code

—

Sections

2

Heater

20.5 V / 300 mA

Plate

S1: 330 V / 1.5 W · S2: 330 V / 10 W

rP

S1: 8,750 Ω · S2: 800 Ω

gm

S1: 2 mA/V · S2: 7.5 mA/V

μ

S1: 17.5 · S2: 6

Dissimilar dual triode for television vertical oscillator and amplifier.

Base

8BD

Socket code

IO

Sections

2

Heater

6.3 V / 1.5 A

Plate

S1: 400 V / 10 W · S2: 400 V / 10 W

Ik max

S1: 60 mA · S2: 60 mA

rP

S1: 2,000 Ω · S2: 2,000 Ω

gm

S1: 7 mA/V · S2: 7 mA/V

μ

S1: 15 · S2: 15

8 pins - IO - International Octal

Twin high-perveance low-mu triode developed for television vertical sweep-generator and deflection-amplifier service. Two independent sections provide substantial current and pulse-voltage capability for vertical scanning and other demanding pulse or driver circuits.

Base

—

Socket code

IO

Sections

2

Heater

6.3 V / 1.5 A

Plate

S1: 500 V / 10 W · S2: 500 V / 10 W

Ik max

S1: 60 mA · S2: 60 mA

rP

S1: 2,150 Ω · S2: 2,150 Ω

gm

S1: 7 mA/V · S2: 7 mA/V

μ

S1: 15 · S2: 15

8 pins - IO - International Octal

Medium-mu twin power triode used for oscillator, amplifier, and television vertical-deflection service. Published vertical-sweep ratings include high positive pulse voltage and substantial combined plate dissipation, supporting demanding deflection-output operation.

Base

6BN7

Socket code

B9A

Sections

2

Heater

6.3 V / 750 mA

Plate

S1: 400 V / 1.5 W · S2: 400 V / 7.5 W

rP

S1: 14,000 Ω · S2: 2,200 Ω

gm

S1: 2 mA/V · S2: 5.4 mA/V

μ

S1: 28 · S2: 12

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

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

8BD

Socket code

IO

Sections

2

Heater

6.3 V / 1.5 A

Plate

S1: 500 V / 10 W · S2: 500 V / 10 W

Ik max

S1: 60 mA · S2: 60 mA

rP

S1: 1,300 Ω · S2: 1,300 Ω

gm

S1: 7.5 mA/V · S2: 7.5 mA/V

μ

S1: 10 · S2: 10

8 pins - IO - International Octal

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

9ES

Socket code

IO

Sections

2

Heater

6.3 V / 600 mA

Plate

S1: 550 V / 6 W · S2: 550 V / 6 W

Ik max

S1: 15 mA · S2: 20 mA

rP

S1: 10,500 Ω · S2: 4,100 Ω

gm

S1: 2 mA/V · S2: 4.4 mA/V

μ

S1: 21 · S2: 18

9 pins - IO - International Octal

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

9EF

Socket code

B9A

Sections

2

Heater

6.3 V / 600 mA

Plate

S1: 500 V / 1.25 W · S2: 500 V / 6.5 W

Ik max

S1: 20 mA · S2: 30 mA

rP

S1: 7,700 Ω · S2: 3,440 Ω

gm

S1: 2.2 mA/V · S2: 4.4 mA/V

μ

S1: 17 · S2: 15

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

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

9EF

Socket code

B9A

Sections

2

Heater

6.3 V / 750 mA

Plate

S1: 350 V / 1 W · S2: 350 V / 5.5 W

Ik max

S1: 35 mA · S2: 35 mA

rP

S1: 52,000 Ω · S2: 920 Ω

gm

S1: 1.3 mA/V · S2: 5.4 mA/V

μ

S1: 68 · S2: 5

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

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

9EF

Socket code

B9A

Sections

2

Heater

6.3 V / 1 A

Plate

S1: 300 V / 2 W · S2: 500 V / 6 W

Ik max

S1: 40 mA · S2: 40 mA

rP

S1: 2,400 Ω · S2: 1,100 Ω

gm

S1: 2.6 mA/V · S2: 5.7 mA/V

μ

S1: 6.3 · S2: 6.3

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

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

9HF

Socket code

B9A

Sections

2

Heater

6.3 V / 900 mA

Plate

S1: 330 V / 1.6 W · S2: 275 V / 7 W

Ik max

S1: 22 mA · S2: 175 mA

rP

S1: 8,750 Ω · S2: 925 Ω

gm

S1: 2 mA/V · S2: 6.5 mA/V

μ

S1: 17.5 · S2: 6

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

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

8BD

Socket code

IO

Sections

2

Heater

6.3 V / 900 mA

Plate

S1: 350 V / 1 W · S2: 550 V / 10 W

Ik max

S1: 20 mA · S2: 50 mA

rP

S1: 9,000 Ω · S2: 2,000 Ω

gm

S1: 2.5 mA/V · S2: 7.7 mA/V

μ

S1: 22.5 · S2: 15.4

8 pins - IO - International Octal

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

9MF

Socket code

B9A

Sections

2

Heater

6.3 V / 900 mA

Plate

S1: 330 V / 1 W · S2: 275 V / 7 W

Ik max

S1: 20 mA · S2: 50 mA

rP

S1: 37,000 Ω · S2: 1,200 Ω

gm

S1: 2.7 mA/V · S2: 10 mA/V

μ

S1: 70 · S2: 12

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

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

8BO

Socket code

IO

Sections

2

Heater

6.3 V / 1.05 A

Plate

S1: 350 V / 1 W · S2: 550 V / 10 W

Ik max

S1: 20 mA · S2: 50 mA

rP

S1: 34,000 Ω · S2: 770 Ω

gm

S1: 1.9 mA/V · S2: 6.5 mA/V

μ

S1: 45 · S2: 5

8 pins - IO - International Octal

Dissimilar dual triode designed as a television vertical-deflection oscillator and amplifier. A high-gain section drives the circuit while the low-mu power section supplies the current and pulse capability required by the vertical output stage.

Base

8BD

Socket code

B9A

Sections

2

Heater

6.3 V / 900 mA

Plate

S1: 330 V / 1.5 W · S2: 220 V / 10 W

Ik max

S1: 20 mA · S2: 100 mA

rP

S1: 40,000 Ω · S2: 750 Ω

gm

S1: 2 mA/V · S2: 7.5 mA/V

μ

S1: 80 · S2: 5.5

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

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

9HF

Socket code

B9A

Sections

2

Heater

6.3 V / 900 mA

Plate

S1: 330 V / 1.5 W · S2: 220 V / 10 W

Ik max

S1: 20 mA · S2: 100 mA

rP

S1: 40,000 Ω · S2: 1,000 Ω

gm

S1: 2.2 mA/V · S2: 7.5 mA/V

μ

S1: 80 · S2: 7.5

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

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

9HF

Socket code

B9A

Sections

2

Heater

6.3 V / 925 mA

Plate

S1: 330 V / 1.5 W · S2: 330 V / 10 W

Ik max

S1: 20 mA · S2: 50 mA

rP

S1: 40,000 Ω · S2: 800 Ω

gm

S1: 1.6 mA/V · S2: 7.5 mA/V

μ

S1: 64 · S2: 6

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

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

—

Socket code

B12C

Sections

2

Heater

6.3 V / 900 mA

Plate

S1: 350 V / 1 W · S2: 550 V / 10 W

Ik max

S2: 50 mA

rP

S1: 9,000 Ω · S2: 2,000 Ω

gm

S1: 2.5 mA/V · S2: 7.7 mA/V

μ

S1: 22.5 · S2: 15.4

12 pins - B12C - Duodecar 12-contact

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

12EJ

Socket code

B12C

Sections

2

Heater

6.3 V / 1.05 A

Plate

S1: 350 V / 1 W · S2: 550 V / 10 W

Ik max

S2: 50 mA

rP

S1: 30,000 Ω · S2: 920 Ω

gm

S1: 2.2 mA/V · S2: 6 mA/V

μ

S1: 66 · S2: 5.5

12 pins - B12C - Duodecar 12-contact

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

—

Socket code

—

Sections

2

Heater

9.7 V

Plate

S1: 1,500 V · S2: 1,500 V

9 pins

Dissimilar dual triode designed for television vertical-deflection service, combining an oscillator section with a high-current output amplifier rated for substantial positive plate pulses.

Base

12EO

Socket code

B12C

Sections

2

Heater

6.3 V / 1.05 A

Plate

S1: 330 V / 1 W · S2: 275 V / 7 W

Ik max

S1: 20 mA · S2: 50 mA

rP

S1: 40,500 Ω · S2: 920 Ω

gm

S1: 1.6 mA/V · S2: 6.5 mA/V

μ

S1: 65 · S2: 6

12 pins - B12C - Duodecar 12-contact

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

9QD

Socket code

B9E

Sections

2

Heater

6.3 V / 985 mA

Plate

S1: 250 V / 2 W · S2: 150 V / 11 W

rP

S1: 17,000 Ω · S2: 2,300 Ω

gm

S1: 2.7 mA/V · S2: 7 mA/V

μ

S1: 46 · S2: 6.4

9 pins - B9E - Novar 9-contact

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

9QD

Socket code

B9E

Sections

2

Heater

6.3 V / 985 mA

Plate

S1: 330 V / 1.5 W · S2: 330 V / 11 W

Ik max

S1: 22 mA · S2: 50 mA

rP

S1: 40,000 Ω · S2: 750 Ω

gm

S1: 1.6 mA/V · S2: 7.2 mA/V

μ

S1: 64 · S2: 5.4

9 pins - B9E - Novar 9-contact

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

8BD

Socket code

IO

Sections

2

Heater

6.3 V / 1.05 A

Plate

S1: 350 V / 1 W · S2: 550 V / 10 W

Ik max

S1: 20 mA · S2: 50 mA

rP

S1: 30,000 Ω · S2: 780 Ω

gm

S1: 2.2 mA/V · S2: 6.4 mA/V

μ

S1: 66 · S2: 5

8 pins - IO - International Octal

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.

Base

9ES

Socket code

B9A

Sections

2

Heater

8.4 V / 450 mA

Plate

S1: 300 V / 1.25 W · S2: 300 V / 6 W

Ik max

S1: 20 mA · S2: 35 mA

rP

S1: 10,500 Ω · S2: 4,100 Ω

gm

S1: 2 mA/V · S2: 4.4 mA/V

μ

S1: 21 · S2: 18

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

Dissimilar dual triode for combined television vertical-deflection oscillator and output-amplifier service. A medium-mu small-signal section generates the sweep waveform while the larger 6 W section supplies the required deflection current.

Base

9EF

Socket code

B9A

Sections

2

Heater

8.4 V / 450 mA

Plate

S1: 300 V / 1.25 W · S2: 300 V / 6.5 W

Ik max

S1: 20 mA · S2: 30 mA

rP

S1: 7,700 Ω · S2: 3,450 Ω

gm

S1: 2.2 mA/V · S2: 4.4 mA/V

μ

S1: 17 · S2: 15

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

Dissimilar dual triode for combined television vertical oscillator and deflection-amplifier service. Its small-signal section generates the scanning waveform while the higher-current output section handles vertical deflection and kilovolt-level pulse voltages.

Base

9EF

Socket code

B9A

Sections

2

Heater

7.9 V / 600 mA

Plate

S1: 350 V / 1 W · S2: 350 V / 5.5 W

Ik max

S2: 35 mA

rP

S1: 52,000 Ω · S2: 920 Ω

gm

S1: 1.3 mA/V · S2: 5.4 mA/V

μ

S1: 68 · S2: 5

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

Dissimilar dual triode with controlled heater warm-up for television vertical-deflection service. A high-mu oscillator section generates the sweep while the low-mu high-current output section handles deflection power and substantial pulse voltage.

Base

—

Socket code

IO

Sections

2

Heater

6.3 V / 950 mA

Plate

S1: 300 V / 3.25 W · S2: 300 V / 3.25 W

Ik max

S1: 50 mA · S2: 50 mA

rP

S1: 5,200 Ω · S2: 5,200 Ω

gm

S1: 2.2 mA/V · S2: 2.2 mA/V

μ

S1: 11.5 · S2: 11.5

8 pins - IO - International Octal

Low-impedance double triode designed for television frame time-base oscillator and current-amplifier service, combining moderate gain with relatively high cathode-current capability.