Electronic tube and vacuum tube catalog

Base

—

Socket code

MEDIUM4BAYONET

Sections

1

Heater

5 V / 3.25 A

Plate

750 V / 20 W

Screen

5 W

Ik max

60 mA

rP

80,000 Ω

gm

1 mA/V

μ

80

4 pins - MEDIUM4BAYONET - Medium 4-contact bayonet base

Western Electric thoriated-tungsten transmitting tetrode rated for Class-B RF service with approximately 10 W catalog output. Designed for radio-frequency power amplification.

Base

—

Socket code

MEDIUM4BAYONET

Sections

1

Heater

7.5 V / 3.25 A

Plate

750 V / 25 W

Screen

5 W

Ik max

75 mA

rP

86,000 Ω

gm

1.16 mA/V

μ

100

4 pins - MEDIUM4BAYONET - Medium 4-contact bayonet base

Western Electric thoriated-tungsten transmitting tetrode rated for Class-B RF service with approximately 12.5 W catalog output. Designed for radio-frequency power amplification.

Base

—

Socket code

J4

Sections

1

Heater

10 V / 3 A

Plate

1,000 V / 70 W

Screen

250 V / 5 W

Ik max

100 mA

rP

70,000 Ω

gm

1.43 mA/V

μ

100

4 pins - J4 - Jumbo 4-contact

Air-cooled transmitting tetrode designed for Class-B RF service. Its construction and operating ratings support radio-frequency power amplification in transmitter equipment.

Base

—

Socket code

—

Sections

1

Heater

10 V / 3.1 A

Plate

1,000 V / 60 W

Air-cooled transmitting tetrode designed for Class-B RF service. Its power construction supports professional radio-frequency amplification rather than receiving-type operation.

Base

—

Socket code

UY5

Sections

1

Heater

6.3 V / 1.6 A

Plate

600 V / 30 W

gm

6.4 mA/V

5 pins - UY5 - Medium 5-contact

Western Electric air-cooled heater-cathode transmitting tetrode designed for RF power service. Its construction supports professional radio-frequency amplifier operation.

Base

—

Socket code

IO

Sections

1

Heater

6.3 V / 1.6 A

Plate

400 V / 25 W

Ik max

125 mA

gm

6.25 mA/V

8 pins - IO - International Octal

Western Electric air-cooled heater-cathode tetrode designed for RF power service. Manufacturer documentation identifies it as a transmitting-class radio-frequency output device.

Base

—

Socket code

IO

Sections

1

Heater

6.3 V / 1.7 A

Plate

1,500 V / 15 W

Screen

300 V / 2 W

gm

5.8 mA/V

8 pins - IO - International Octal

High-vacuum beam-power tube designed primarily for blocking-oscillator and pulse-modulator service, also usable as a deflection amplifier where short high-power pulses are required.

Base

—

Socket code

—

Sections

1

Heater

6.3 V / 1.7 A

Plate

3,500 V / 15 W

Screen

850 V / 3 W

gm

0.55 mA/V

Base

Refer to variations

Socket code

Refer to variations

Sections

1

Heater

6.3 V / 3 A

Plate

2,000 V / 35 W

Screen

400 V

gm

2.75 mA/V

μ

65

4 pins

Lewis Electronics 3D23 directly heated thoriated-tungsten multi-electrode RF transmitting power tube, provisionally classified as a tetrode, with 6.3 V 3 A filament and Class C output around 130 W.

Base

—

Socket code

B8G

Sections

1

Heater

6.3 V / 3 A

Plate

2,000 V / 45 W

Screen

400 V / 10 W

Ik max

100 mA

μ

50

8 pins - B8G - Loctal 8-contact

High-efficiency air-cooled transmitting tetrode designed for VHF RF power service, providing substantial output at high radio frequencies.

Base

—

Socket code

B5

Sections

1

Heater

5 V / 1.6 A

Plate

250 V / 45 W

Screen

65 V

Ik max

45 mA

rP

3,600 Ω

μ

5.3

5 pins - B5 - European 5-pin base

Coplanar-grid power tetrode published under the 4045A designation. Its specialized grid geometry supports high-frequency power operation in professional electronic equipment.

Base

—

Socket code

UX4

Sections

1

Heater

10 V / 3.25 A

Plate

3,000 V / 100 W

Screen

15 W

Ik max

100 mA

rP

175,000 Ω

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

Standard Valves directly heated tetrode with published operating data. Its filamentary construction and power ratings support output-stage service rather than ordinary small-signal amplification.

Base

—

Socket code

—

Sections

1

Heater

10 V / 15.6 A

Plate

750 V / 75 W

Screen

600 V / 50 W

Ik max

600 mA

rP

105,000 Ω

Standard Valves directly heated tetrode with manufacturer-published operating data. Its filamentary construction supports power-output applications in professional electronic equipment.

Base

—

Socket code

UX4

Sections

1

Heater

10 V / 3 A

Plate

1,000 V / 70 W

Screen

250 V / 5 W

Ik max

100 mA

rP

70,000 Ω

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

Standard Valves directly heated tetrode with published electrical and operating data. Its power construction supports output-stage service rather than receiving-type small-signal amplification.

Base

—

Socket code

UX4

Sections

1

Heater

10 V / 3 A

Plate

1,000 V / 70 W

Screen

250 V / 5 W

Ik max

100 mA

rP

70,000 Ω

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

Standard Valves directly heated tetrode variant with manufacturer-published operating data. Its filamentary construction supports power-output applications in professional equipment.

Base

—

Socket code

UX4

Sections

1

Heater

10 V / 3.1 A

Plate

1,000 V / 60 W

Screen

200 V / 6 W

Ik max

125 mA

rP

40,000 Ω

gm

4 mA/V

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

Standard Valves directly heated tetrode with published operating data. Its power-capable construction is intended for output-stage service rather than ordinary voltage amplification.

Base

5C

Socket code

UX5

Sections

1

Heater

2.5 V / 1.75 A

Plate

400 V / 10 W

Ik max

200 mA

rP

2,380 Ω

gm

2.35 mA/V

μ

5.6

5 pins - UX5 - Small 5-contact

Directly heated dual-grid power-amplifier tetrode designed especially for Class-B audio-output service. Its filamentary construction provides substantial low-frequency power in push-pull amplifier stages.

Base

Refer to variations

Socket code

SEPTAR5

Sections

1

Heater

6 V / 3.5 A

Plate

3,000 V / 65 W

Screen

600 V / 10 W

Ik max

150 mA

gm

4 mA/V

μ

6

5 pins - SEPTAR5 - Septar 5-contact transmitting-tube base family

Fast-heating thoriated-tungsten transmitting tetrode designed for mobile RF service. Its rapid warm-up supports radio-frequency power equipment requiring quick availability.

Base

—

Socket code

—

Sections

1

Heater

6 V / 2.85 A

Plate

2,500 V / 15 W

Screen

400 V / 12 W

Ik max

250 mA

gm

12 mA/V

Metal-ceramic RF power tetrode designed for CW and low-duty pulse amplification, oscillator operation, and single-sideband linear amplification. Its compact professional construction supports versatile transmitting service.

Base

—

Socket code

—

Sections

1

Heater

26 V / 2.25 A

Plate

20,000 V / 60 W

Screen

1,500 V / 8 W

Ik max

18 A

High-vacuum pulse tetrode rated around 20 kV plate voltage and 18 A peak current, capable of approximately 300 kW pulse output for modulator service.

Base

Refer to variations

Socket code

Refer to variations

Sections

1

Heater

26 V / 2.1 A

Plate

20,000 V / 60 W

Screen

1,500 V / 8 W

Ik max

18 A

Eimac 8252 high-vacuum pulse-modulator tetrode for inductive or resistive loads, rated around 20 kV DC and 18 A peak plate current.

Base

Refer to variations

Socket code

Refer to variations

Sections

1

Heater

26 V / 2.1 A

Plate

20,000 V / 60 W

Screen

1,500 V / 8 W

Ik max

18 A

Eimac 8252W high-vacuum pulse-modulator tetrode for inductive or resistive loads, optimized for powerful short-duration pulses at approximately 20 kV plate voltage.

Base

—

Socket code

—

Sections

1

Heater

6.3 V / 3.75 A

Plate

800 V / 60 W

Screen

350 V

Ik max

250 mA

Mazda transmitting tetrode providing roughly 110 W Class C RF output from a 750 V plate supply.

Base

—

Socket code

—

Sections

1

Heater

6.3 V / 3.975 A

Plate

750 V / 60 W

Screen

350 V / 14 W

Ik max

250 mA

Mazda RF power tetrode designed for transmitting service to approximately 60 MHz.

Base

—

Socket code

—

Sections

1

Heater

12.6 V / 3.6 A

Plate

800 V / 60 W

Screen

350 V / 15 W

Dual transmitting tetrode assembly whose parallel sections can produce approximately 220 W Class C RF output.

Base

—

Socket code

—

Sections

1

Heater

12.6 V / 3.5 A

Plate

800 V / 80 W

Screen

7.5 W

rP

550 Ω

gm

20 mA/V

μ

11

Mazda power tetrode for substantial power-amplifier and series-regulator applications.

Base

—

Socket code

—

Sections

1

Heater

6.3 V / 900 mA

Plate

600 V / 25 W

Screen

300 V

Ik max

100 mA

807-family transmitting tetrode for RF amplification, oscillator, modulator, and audio-frequency power service.

Base

—

Socket code

—

Sections

1

Heater

6.3 V / 1.45 A

Plate

600 V / 35 W

Screen

275 V / 7 W

Beam-power tetrode designed for high-frequency amplifier service, providing a power stage for RF applications.

Base

—

Socket code

—

Sections

1

Heater

6.3 V / 1.5 A

Plate

800 V / 30 W

Screen

250 V

gm

6.5 mA/V

Indirectly heated transmitting tetrode for medium-power radio-frequency amplification.

Base

—

Socket code

—

Sections

1

Heater

6.3 V / 3.2 A

Rugged dual beam tetrode intended for high-frequency amplifier and oscillator service, combining two power sections for demanding RF applications.

Base

—

Socket code

—

Sections

1

Heater

6.3 V / 1.65 A

Plate

800 V / 35 W

Screen

400 V / 4.5 W

Ik max

200 mA

gm

10 mA/V

μ

4.5

Power tetrode for audio-frequency amplification and high-voltage series-regulator service.

Base

—

Socket code

B4A

Sections

1

Heater

26 V / 2 A

Plate

20,000 V / 60 W

Screen

1,250 V / 8 W

Ik max

30 mA

4 pins - B4A - 4-contact B4A physical base

Heater-cathode pulse-amplifier tetrode designed for high-current pulse service, with a published peak anode-current rating of 15 amperes into a non-inductive load.

Base

—

Socket code

—

Sections

1

Heater

6.3 V / 24 A

Plate

2,000 W

Screen

500 V

Ik max

650 mA

Water-cooled grounded-grid UHF tetrode for kilowatt-class television power-amplifier and oscillator service.

Base

—

Socket code

—

Sections

1

Heater

10 V / 9.7 A

Plate

500 W

μ

9.5

Low-drive high-frequency transmitting tetrode for FM/AM RF amplifiers and screen-modulator stages.

Base

—

Socket code

—

Sections

1

Heater

120 V / 1.55 A

Forced-air-cooled UHF power tetrode.

Base

Refer to variations

Socket code

Refer to variations

Sections

1

Heater

12.6 V / 650 mA

Plate

600 V / 10 W

Screen

250 V

Ik max

55 mA

gm

2.5 mA/V

μ

8.5

Twin high-frequency tetrode developed from the 832A for RF amplifier, frequency-multiplier, and modulator service. Its paired tetrode structure supports balanced high-frequency power circuits.

Base

—

Socket code

—

Sections

1

Heater

12.6 V / 650 mA

Plate

25 W

μ

8.5

U.S. Navy designation of the 6252 twin high-frequency tetrode, intended for RF amplifier, frequency-multiplier, and modulator service in military communications equipment.

Base

E9-1

Socket code

B9A

Sections

1

Heater

12.6 V / 400 mA

Plate

300 V / 14 W

Screen

200 V / 2 W

Ik max

50 mA

rP

3,900 Ω

gm

3.3 mA/V

μ

18

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

High-gain twin tetrode designed for Class-C amplifier, oscillator, and frequency-multiplier service. Its paired RF sections support compact high-frequency power generation and multiplication.

Base

—

Socket code

—

Sections

1

Heater

12.6 V / 410 mA

Plate

300 V / 14 W

μ

7.5

High-gain twin tetrode for Class-C amplifier, oscillator, frequency-multiplier, and modulator service, rated to roughly 200 MHz at full input. Designed for versatile VHF power circuits.

Base

9V

Socket code

—

Sections

1

Heater

6.3 V / 300 mA

Plate

180 V / 2,000 W

Screen

750 V

rP

1,800 Ω

gm

4 mA/V

μ

20

9 pins

Metal-ceramic four-electrode transmitting tetrode for grounded-grid RF power amplifier or oscillator service through approximately 800 MHz, with an integral forced-air-cooled anode radiator.

Base

6AM

Socket code

UX6

Sections

1

Heater

6.3 V / 900 mA

Plate

350 V / 18.6 W

Screen

300 V / 3.7 W

rP

22,500 Ω

gm

6 mA/V

6 pins - UX6 - Small 6-contact

Heater-type tetrode power amplifier designed for Class-A and general power-amplifier service. Its output capability supports low-frequency or general-purpose load-driving applications.

Base

—

Socket code

—

Sections

1

Heater

6.3 V / 600 mA

Russian output tetrode documented in manufacturer technical literature. The available translated source establishes tetrode construction and power-class operation but provides limited explicit application wording.

Base

—

Socket code

—

Sections

1

Heater

6.3 V / 900 mA

Plate

300 V / 15 W

Screen

200 V / 1.5 W

Ik max

400 mA

gm

20 mA/V

Russian metal-ceramic output tetrode explicitly designed for both audio power and television line-deflection service, combining high transconductance with approximately 7 kV pulse capability.

Base

—

Socket code

IO

Sections

1

Heater

6.3 V / 700 mA

Plate

14 W

Screen

350 V

rP

12,000 Ω

8 pins - IO - International Octal

Russian power tetrode documented for electronic amplification, control, or radio-frequency service. Manufacturer material establishes power-capable tetrode operation without a more specific functional priority.

Base

—

Socket code

IO

Sections

1

Heater

6.3 V / 880 mA

Plate

20 W

8 pins - IO - International Octal

Russian power tetrode documented with manufacturer technical characteristics and ratings. The available source establishes single-section tetrode construction and power-capable electronic service.

Base

—

Socket code

IO

Sections

1

Heater

6.3 V / 475 mA

Plate

13.2 W

8 pins - IO - International Octal

Russian power tetrode documented with manufacturer technical characteristics and ratings. The available source establishes single-section tetrode construction and power-capable operation.

Base

Refer to variations

Socket code

B8G

Sections

1

Heater

6.3 V / 600 mA

Plate

400 V / 10 W

Screen

225 V / 1.75 W

gm

10.5 mA/V

μ

28

8 pins - B8G - Loctal 8-contact

Radiation-cooled twin tetrode designed for push-pull Class-C service. Its paired high-frequency sections provide balanced RF power amplification in compact professional equipment.

Base

—

Socket code

—

Sections

1

Heater

6 V / 5.6 A

Plate

180 W

Screen

2,000 V

Power tetrode documented by General Electric. Available manufacturer material establishes power-class tetrode construction but provides limited extracted application detail.

Base

Refer to variations

Socket code

Refer to variations

Sections

1

Heater

6 V / 3.5 A

Plate

3,000 V / 65 W

Screen

600 V / 10 W

μ

6

Instant-heating radial-beam transmitting tetrode for mobile RF power service, normally radiation/convection cooled and capable of substantial output to about 150 MHz.

Base

Refer to variations

Socket code

Refer to variations

Sections

1

Heater

6 V / 2.6 A

Plate

15,000 V / 65 W

Screen

500 V / 12 W

Ik max

200 mA

μ

60

Radial-beam pulse tetrode designed for pulse-modulator, pulsed-amplifier, and pulsed-oscillator service in high-power electronic systems.