Electronic tube and vacuum tube catalog

Base

—

Socket code

—

Electrical Summary

Heater	11.6 V / 450 mA
Plate	150 V / 5.2 W
Screen	130 V / 1.1 W
rP	13,000 Ω
gm	5.8 mA/V

Sections

1

Base

7BZ

Socket code

—

Electrical Summary

Heater	11.2 V / 450 mA
Plate	275 V / 9 W
Screen	275 V / 2.2 W
rP	28,000 Ω
gm	5.8 mA/V

Sections

1

7 pins

Miniature beam-power output tube intended for Class-A audio-frequency output stages in television and radio receivers, delivering several watts from a compact receiving-tube envelope.

Base

Refer to variations

Socket code

Refer to variations

Electrical Summary

Heater	2.8 V / 110 mA
Plate	180 V / 4.5 W
Screen	135 V / 0.9 W
Ik max	30 mA

Sections

1

8 pins

Special-purpose beam-power tube intended for professional or industrial electronic service, with construction and ratings beyond ordinary consumer receiver output applications.

Base

—

Socket code

IO

Electrical Summary

Heater	12.6 V / 150 mA
Plate	250 V / 7.5 W
Screen	250 V / 1.5 W
rP	70,000 Ω
gm	3 mA/V

Sections

1

7 pins - IO - International Octal

Beam-power output tube designed for audio-frequency power amplification in receiving equipment, providing Class-A output service from a 12.6 V heater supply.

Base

—

Socket code

IO

Electrical Summary

Heater	12.6 V / 150 mA
Plate	250 V / 7.5 W
Screen	250 V / 1.5 W
gm	3 mA/V

Sections

1

7 pins - IO - International Octal

Glass tubular beam-power output tube for Class-A audio-frequency amplification in radio and related receiving equipment, using a 12.6 V heater.

Base

7CV

Socket code

B7G

Electrical Summary

Heater	12.6 V / 400 mA
Plate	150 V / 5.5 W
Screen	150 V / 1 W
rP	40,000 Ω
gm	4.6 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Miniature beam-power output tube intended for Class-A audio-frequency power amplification in television and radio receivers, optimized for relatively low supply voltages.

Base

9BQ

Socket code

B9A

Electrical Summary

Heater	12.6 V / 600 mA
Plate	250 V / 9 W
Screen	250 V / 2.5 W
rP	100,000 Ω
gm	8.5 mA/V

Sections

1

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

Miniature beam-power output tube for television and radio audio stages, designed to provide useful Class-A power from relatively low-voltage receiver supplies.

Base

7CV

Socket code

B7G

Electrical Summary

Heater	12.6 V / 600 mA
Plate	150 V / 7 W
Screen	130 V / 1.4 W
rP	10,000 Ω
gm	7.5 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Beam-power output tube intended for audio-frequency power amplification in receiving equipment, with a 12.6 V heater suited to series-string operation.

Base

7CV

Socket code

B7G

Electrical Summary

Heater	12.6 V / 600 mA
Plate	130 V / 5 W
Screen	130 V / 1.4 W
rP	15,000 Ω
gm	9.2 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Miniature beam-power output tube designed for audio-frequency power stages in radio and television receivers, combining compact size with useful Class-A output capability.

Base

—

Socket code

B7G

Electrical Summary

Heater	12.6 V / 150 mA
Plate	330 V / 2 W
Screen	330 V / 1.5 W
rP	300,000 Ω
gm	6 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Miniature beam-power pentode designed specifically for audio-output amplifier service, providing a compact power stage for low-voltage consumer equipment.

Base

6AA

Socket code

IO

Electrical Summary

Heater	12.6 V / 150 mA
Plate	300 V / 7.5 W
Screen	250 V
rP	70,000 Ω
gm	3 mA/V

Sections

1

8 pins - IO - International Octal

Lock-in beam-power amplifier designed for receiver output-stage service, providing a compact power tube for audio-frequency amplification.

Base

7AC

Socket code

B9A

Electrical Summary

Heater	12.6 V / 600 mA
Plate	117 V / 5.5 W
Screen	117 V / 1.25 W
rP	13,000 Ω
gm	9 mA/V

Sections

1

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

Low-voltage beam-power output tube related to the 25L6 family, documented for Class-A1 audio service with approximately 2.1 watts output.

Base

—

Socket code

—

Electrical Summary

Heater	16.8 V / 450 mA
Plate	S2: 165 V / 6.5 W
Screen	S2: 160 V / 1.8 W
rP	S2: 30,000 Ω
gm	S2: 8.6 mA/V

Sections

2

Base

7CV

Socket code

B7G

Electrical Summary

Heater	16.8 V / 450 mA
Plate	135 V / 5.5 W
Screen	117 V / 1.25 W
rP	10,000 Ω
gm	7.5 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Miniature beam-power tube designed for the audio-output stage of television receivers, providing roughly two watts of Class-A output depending on operating conditions.

Base

—

Socket code

—

Electrical Summary

Heater	16.8 V / 540 mA
Plate	130 V / 5 W
gm	9.2 mA/V

Sections

1

Miniature beam-power pentode designed to operate from relatively low plate and screen-grid voltages, suitable for compact power-output applications.

Base

7CV

Socket code

B7G

Electrical Summary

Heater	16.8 V / 450 mA
Plate	135 V / 6 W
Screen	117 V / 1.25 W
rP	10,000 Ω
gm	7.5 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Miniature beam-power tube used in television-receiver audio-output stages, electrically related to the 6CU5 apart from heater characteristics.

Base

—

Socket code

B9E

Electrical Summary

Heater	18.5 V / 300 mA
Plate	350 V / 9 W
Screen	160 V / 2.5 W
Ik max	90 mA
rP	27,000 Ω
gm	4.8 mA/V

Sections

1

B9E - Novar 9-contact

Beam-power output tube with a 9-watt maximum plate-dissipation rating; the available manufacturer documentation provides electrical data but little explicit application description.

Base

9BQ

Socket code

B9A

Electrical Summary

Heater	25 V / 300 mA
Plate	250 V / 9 W
Screen	250 V / 2.5 W
rP	100,000 Ω
gm	8.5 mA/V

Sections

1

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

Beam-power tube documented for power-amplifier service with approximately 3.5 watts Class-A output; the family is also rated for television deflection applications.

Base

7CV

Socket code

B7G

Electrical Summary

Heater	25 V / 300 mA
Plate	135 V / 5.5 W
Screen	117 V / 1.25 W
rP	10,000 Ω
gm	7.5 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Beam-power tube designed for the audio-output stage of compact AC/DC radio receivers, delivering roughly two to 2.5 watts in Class-A service.

Base

7CV

Socket code

—

Electrical Summary

Heater	25 V / 300 mA
Plate	130 V / 7 W
Screen	130 V / 1.4 W
rP	15,000 Ω
gm	9.2 mA/V

Sections

1

7 pins

Miniature beam-power pentode designed primarily for audio-frequency output stages in television and radio receivers, offering high power sensitivity at low plate and screen voltages.

Base

7CV

Socket code

B7G

Electrical Summary

Heater	25 V / 300 mA
Plate	150 V / 5.5 W
Screen	130 V / 1.75 W
rP	11,000 Ω
gm	14.6 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Beam-power pentode used in television-receiver audio-output stages, providing compact power amplification with heater characteristics suited to series-string equipment.

Base

—

Socket code

—

Electrical Summary

Heater	25 V / 150 mA
Plate	135 V / 4.5 W
gm	5.8 mA/V

Sections

1

Beam-power pentode designed for operation from low screen-voltage supplies, intended for compact power-amplifier applications where available supply voltage is limited.

Base

—

Socket code

B9A

Electrical Summary

Heater	25 V / 150 mA
Plate	150 V / 5.5 W
Screen	130 V / 1.1 W
rP	13,000 Ω
gm	6.4 mA/V

Sections

1

B9A - Small-button Noval 9-contact

Beam-power tube whose supplied datasheet documents heater, ratings, characteristics, and operating data through an explicitly referenced 6-volt parent type.

Base

—

Socket code

B7G

Electrical Summary

Heater	1.2 V / 120 mA
Plate	100 V / 1.1 W
Screen	100 V
Ik max	15.5 mA
gm	1.7 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Directly heated Russian beam-output tube for low-frequency power amplification in battery equipment, delivering modest audio output from economical low-voltage supplies.

Base

—

Socket code

B7G

Electrical Summary

Heater	1.2 V / 120 mA
Plate	90 V / 0.4 W
Screen	90 V
Ik max	7 mA
gm	1.1 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Very-low-power directly heated Russian beam-output tube for battery equipment, producing roughly 75–190 mW from 60–90 V supplies for portable audio-output stages.

Base

—

Socket code

—

Electrical Summary

Heater	2 V / 1 A

Sections

1

Directly heated low-power beam tetrode for HF oscillator and amplifier service.

Base

—

Socket code

IO

Electrical Summary

Heater	30 V / 300 mA
Plate	250 V / 7 W
Screen	110 V / 1.5 W
gm	10 mA/V

Sections

1

8 pins - IO - International Octal

Russian beam-power output tube for low-frequency power amplification, combining about 10 mS transconductance with substantial current at relatively modest supply voltage.

Base

7-pin miniature

Socket code

B9A

Electrical Summary

Heater	32 V / 100 mA
Plate	150 V / 4.4 W
Screen	130 V / 1.2 W
rP	21,500 Ω
gm	4.4 mA/V

Sections

1

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

Beam-power pentode designed for AC/DC radio-receiver audio output, using a 32 V, 100 mA series-string heater and low-voltage Class-A operation.

Base

7-pin miniature

Socket code

B9A

Electrical Summary

Heater	32 V / 100 mA
Plate	150 V / 4.4 W
Screen	130 V / 1.2 W
rP	21,500 Ω
gm	5.5 mA/V

Sections

1

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

Beam-power audio-output tube for AC/DC receivers, closely related to 32ET5 and optimized for useful loudspeaker power from low-voltage series-string equipment.

Base

7-pin miniature

Socket code

B7G

Electrical Summary

Heater	34 V / 100 mA
Plate	150 V / 5.5 W
Screen	130 V / 1.1 W
rP	13,000 Ω
gm	5.7 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Beam-power output tube for low-voltage audio-frequency amplification in consumer receivers, providing Class-A loudspeaker-driving power from a series-string heater supply.

Base

7-pin miniature

Socket code

B7G

Electrical Summary

Heater	34 V / 100 mA
Plate	150 V / 5 W
Screen	130 V / 1.1 W
rP	23,000 Ω
gm	5.7 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Improved beam-power audio-output tube for low-voltage receiver service, intended for Class-A power amplification in series-heater consumer equipment.

Base

6AA

Socket code

LOCTAL8

Electrical Summary

Heater	35 V / 150 mA
Plate	200 V / 8.5 W
Screen	200 V / 1 W
rP	34,000 Ω
gm	5.5 mA/V

Sections

1

8 pins - LOCTAL8 - Loctal 8-contact base

Beam-power audio-output tube for AC/DC receiving equipment, designed for Class-A loudspeaker power from a 35 V series-string heater.

Base

7BZ

Socket code

B8A

Electrical Summary

Heater	35 V / 150 mA
Plate	200 V / 8.5 W
Screen	117 V / 1 W
rP	34,000 Ω
gm	6 mA/V

Sections

1

8 pins - B8A - Rimlock 8-contact

Beam-power output tube designed for audio-frequency power stages in AC/DC radio and television receivers using series-connected heaters.

Base

7CV

Socket code

B7G

Electrical Summary

Heater	35 V / 150 mA
Plate	135 V / 4.5 W
Screen	117 V / 1 W
Ik max	100 mA
rP	13,000 Ω
gm	5.8 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Beam-power audio-output tube widely used in AC/DC receivers, providing Class-A loudspeaker power from low plate voltage and a 35 V series-string heater.

Base

—

Socket code

—

Electrical Summary

Heater	35 V / 150 mA
Plate	150 V / 5.5 W
Screen	130 V / 2 W

Sections

1

Base

7-pin miniature

Socket code

B9A

Electrical Summary

Heater	35 V / 150 mA
Plate	150 V / 5.5 W
Screen	130 V / 1.1 W
rP	12,000 Ω
gm	7.5 mA/V

Sections

1

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

Beam pentode designed for audio-frequency power output in series-heater equipment, with a tapped heater connection provided for operation of a panel lamp.

Base

7-AC

Socket code

IO

Electrical Summary

Heater	35 V / 150 mA
Plate	200 V / 8.5 W
Screen	110 V / 1 W
rP	13,800 Ω
gm	5.9 mA/V

Sections

1

7 pins - IO - International Octal

Beam-power amplifier intended for audio-output stages of AC/DC and universal receivers, providing useful power from comparatively low plate-supply voltages.

Base

7AC

Socket code

IO

Electrical Summary

Heater	35 V / 150 mA
Plate	200 V / 8.5 W
Screen	125 V / 1 W
Ik max	100 mA
rP	14,000 Ω
gm	5.8 mA/V

Sections

1

7 pins - IO - International Octal

Beam-power output tube for AC/DC receivers using 150 mA heater strings, widely suited to single-ended audio-frequency power stages at modest supply voltage.

Base

—

Socket code

UX4

Electrical Summary

Heater	20 V / 320 mA
Plate	130 V / 6 W
Screen	130 V / 1.3 W
rP	9,300 Ω
gm	4.8 mA/V

Sections

1

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

Western Electric heater-cathode beam-power pentode designed for audio-frequency amplification at low plate voltages, particularly circuits operating from plate supplies as low as 48 volts.

Base

6BA

Socket code

B8G

Electrical Summary

Heater	2.8 V / 110 mA
Plate	180 V / 4.5 W
Screen	135 V / 0.9 W
Ik max	30 mA
rP	150,000 Ω
gm	2.4 mA/V

Sections

1

8 pins - B8G - Loctal 8-contact

Directly heated beam-power amplifier designed for Class-A audio-output service in low-voltage battery-operated equipment.

Base

—

Socket code

—

Electrical Summary

Heater	3.1 V / 450 mA
Plate	300 V / 3 W
Screen	150 V / 0.15 W
Ik max	20 mA
rP	165,000 Ω
gm	15.5 mA/V

Sections

1

Base

6AA

Socket code

IO

Electrical Summary

Heater	50 V / 150 mA
Plate	117 V / 7 W
Screen	117 V / 1.4 W
rP	28,000 Ω
gm	8 mA/V

Sections

1

6 pins - IO - International Octal

50-volt-heater beam tetrode designed for receiver audio-output service, with published output around 4 watts from a compact power stage.

Base

7BZ

Socket code

B7G

Electrical Summary

Heater	50 V / 150 mA
Plate	150 V / 5 W
Screen	117 V / 1 W
rP	14,000 Ω
gm	7.5 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Series-heater power tetrode designed for low-frequency audio-output amplification in transformerless radio and consumer receiver equipment.

Base

7CV

Socket code

B7G

Electrical Summary

Heater	50 V / 150 mA
Plate	135 V / 5.5 W
Screen	117 V / 1.25 W
rP	10,000 Ω
gm	7.5 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Miniature beam-power tube designed for the audio-output stage of compact AC/DC radio receivers, optimized for useful power from low supply voltage.

Base

7CV

Socket code

B7G

Electrical Summary

Heater	50 V / 150 mA
Plate	130 V / 5 W
Screen	130 V / 1.4 W
rP	15,000 Ω
gm	9.2 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Beam-power pentode designed primarily for audio-frequency output stages of television and radio receivers operating at low plate and screen voltages.

Base

5640

Socket code

SUBMINIATURE6

Electrical Summary

Heater	6.3 V / 450 mA
Plate	150 V / 3.5 W
Screen	140 V / 1 W
rP	15,000 Ω
gm	5 mA/V

Sections

1

6 pins - SUBMINIATURE6 - Subminiature 6-lead base

Subminiature beam-power output amplifier providing a compact power stage for electronic equipment where space and weight are restricted.

Base

—

Socket code

—

Electrical Summary

Heater	12.6 V / 150 mA
Plate	250 V / 7.5 W
Screen	250 V / 1.5 W
rP	70,000 Ω
gm	3 mA/V

Sections

1

7 pins

Beam-power amplifier pentode related to the 12A6, designed for reliable operation under severe vibration and intermittent duty while providing Class-A power output.

Base

9G

Socket code

B9A

Electrical Summary

Heater	6.3 V / 350 mA
Plate	275 V / 8.25 W
Screen	275 V / 3.3 W
Ik max	44 mA
rP	45,000 Ω
gm	3.1 mA/V

Sections

1

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

Rugged miniature beam-power amplifier designed for mobile and aircraft equipment, supporting Class-A audio output and Class-C RF service through VHF.

Base

6CL

Socket code

—

Electrical Summary

Heater	2.5 V / 55 mA
Plate	180 V / 1.5 W
Screen	135 V
Ik max	12 mA
rP	175,000 Ω
gm	1.6 mA/V

Sections

1

6 pins

Beam-power tube documented by National Union and GE literature; available source material establishes its power construction but does not clearly support a narrower specialized application.

Base

8DL

Socket code

B7G

Electrical Summary

Heater	6.3 V / 450 mA
Plate	165 V / 4.1 W
Screen	155 V / 0.4 W
Ik max	50 mA
rP	150,000 Ω
gm	4.2 mA/V
μ	6

Sections

1

8 pins - B7G - Miniature 7-contact

Subminiature beam pentode designed for audio power amplification where compact construction and resistance to severe shock and vibration are important.