Electronic tube and vacuum tube catalog

Base

—

Socket code

B9A

Sections

1

Heater

13 V / 100 mA

Plate

250 V / 2.25 W

Screen

250 V / 0.5 W

rP

400,000 Ω

gm

4.4 mA/V

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

Variable-mu high-frequency pentode for gain-controlled RF amplification in AM/FM receivers using 100 mA series-connected heater chains.

Base

NOVAL

Socket code

B9A

Sections

1

Heater

12.6 V / 100 mA

Plate

550 V / 2 W

Screen

250 V / 0.3 W

Ik max

10 mA

rP

1,000,000 Ω

gm

2.3 mA/V

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

Remote-cutoff RF pentode for gain-controlled RF and IF amplification, providing smooth automatic-gain-control action in receiving equipment.

Base

—

Socket code

B9A

Sections

1

Heater

12.6 V / 100 mA

Plate

250 V / 2 W

Screen

250 V / 0.3 W

Ik max

10 mA

rP

1,000,000 Ω

gm

2.3 mA/V

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

Remote-cutoff RF pentode for gain-controlled small-signal RF or IF amplifier service in series-heater receiving equipment.

Base

8V

Socket code

B8G

Sections

1

Heater

12.6 V / 150 mA

Plate

250 V / 2 W

Screen

100 V / 0.25 W

rP

800,000 Ω

gm

2 mA/V

8 pins - B8G - Loctal 8-contact

Remote-cutoff lock-in pentode for gain-controlled RF and IF voltage amplification in AC/DC receivers with series-string heaters.

Base

—

Socket code

B8G

Sections

1

Heater

12.6 V / 150 mA

Plate

250 V

Screen

100 V

rP

800,000 Ω

gm

2 mA/V

8 pins - B8G - Loctal 8-contact

Metal remote-cutoff pentode for RF voltage amplification, combining variable-mu gain control with a 12.6 V series heater.

Base

7CC

Socket code

B7G

Sections

1

Heater

12.6 V / 150 mA

Plate

300 V / 3 W

Screen

150 V / 0.6 W

rP

1,000,000 Ω

gm

4.4 mA/V

7 pins - B7G - Miniature 7-contact

Variable-mu miniature pentode for RF and IF amplification in AC/DC receivers, providing a broad useful AGC range.

Base

—

Socket code

B7G

Sections

1

Heater

12.6 V / 150 mA

Plate

300 V / 3 W

Screen

125 V / 0.4 W

Ik max

14 mA

rP

800,000 Ω

gm

2 mA/V

7 pins - B7G - Miniature 7-contact

Miniature remote-cutoff pentode designed specifically for RF and IF amplification with automatic gain control.

Base

7CM

Socket code

B7G

Sections

1

Heater

12.6 V / 150 mA

Plate

330 V / 2.3 W

Screen

330 V / 0.55 W

rP

260,000 Ω

gm

8 mA/V

7 pins - B7G - Miniature 7-contact

Semiremote-cutoff pentode developed for gain-controlled television video-IF amplification, combining high transconductance with stable wideband AGC operation.

Base

—

Socket code

—

Sections

1

Heater

12.6 V / 150 mA

Plate

330 V / 4.4 W

Screen

140 V / 0.44 W

gm

2 mA/V

Remote-cutoff high-frequency pentode for RF voltage amplification, providing gradual gain reduction for automatic gain-control circuits.

Base

—

Socket code

—

Sections

1

Heater

12.6 V / 150 mA

Plate

250 V

Screen

125 V

rP

600,000 Ω

gm

1.65 mA/V

μ

990

Variable-mu RF pentode for gain-controlled RF and IF amplification with reduced distortion and cross-modulation.

Base

7R

Socket code

IO

Sections

1

Heater

12.6 V / 150 mA

Plate

300 V

Screen

150 V

rP

300,000 Ω

gm

1.45 mA/V

8 pins - IO - International Octal

Glass-tubular variable-mu RF pentode for receiver RF/IF stages requiring extended cutoff and automatic volume control.

Base

8BK

Socket code

IO

Sections

1

Heater

12.6 V / 150 mA

Plate

330 V / 3.3 W

Screen

220 V / 0.66 W

rP

900,000 Ω

gm

4.7 mA/V

8 pins - IO - International Octal

Semi-remote-cutoff high-transconductance pentode for RF/IF voltage amplification with controlled gain and reduced high-frequency cathode coupling.

Base

8N

Socket code

IO

Sections

1

Heater

12.6 V / 150 mA

Plate

300 V / 4 W

Screen

150 V / 0.11 W

rP

800,000 Ω

gm

2 mA/V

8 pins - IO - International Octal

Variable-mu pentode designed for AVC-controlled RF and IF amplification with broad gain reduction and reduced cross-modulation.

Base

8N

Socket code

IO

Sections

1

Heater

12.6 V / 150 mA

Plate

300 V / 4 W

Screen

150 V / 0.11 W

rP

800,000 Ω

gm

2 mA/V

8 pins - IO - International Octal

Glass-tubular variable-mu pentode for automatic-gain-controlled RF and IF receiver amplification in series-string equipment.

Base

—

Socket code

B7

Sections

1

Heater

13 V / 200 mA

Plate

200 V

Screen

100 V

gm

1.8 mA/V

7 pins - B7 - Medium 7-contact

Cossor variable-mu high-frequency pentode designed for RF and IF amplification under automatic volume control.

Base

8V

Socket code

LOCTAL8

Sections

1

Heater

12.6 V / 150 mA

Plate

300 V / 4 W

Screen

150 V / 0.4 W

rP

120,000 Ω

gm

2.35 mA/V

8 pins - LOCTAL8 - Loctal 8-contact base

Variable-mu lock-in pentode for gain-controlled RF/IF voltage amplification in AC/DC receivers.

Base

8V

Socket code

B8G

Sections

1

Heater

12.6 V / 160 mA

Plate

300 V / 2.5 W

Screen

150 V / 0.5 W

rP

800,000 Ω

gm

4 mA/V

8 pins - B8G - Loctal 8-contact

High-slope variable-mu pentode for RF and IF amplification, combining strong gain with extended-cutoff automatic gain control.

Base

8BJ

Socket code

LOCKIN8

Sections

1

Heater

12.6 V / 225 mA

Plate

300 V / 1.6 W

Screen

150 V / 0.8 W

rP

2,300,000 Ω

gm

5.8 mA/V

8 pins - LOCKIN8 - Lock-in 8-contact base

High-transconductance lock-in pentode capable of extended-cutoff operation for high-frequency amplification and controlled receiver gain.

Base

8N

Socket code

IO

Sections

1

Heater

6.3 V / 450 mA

Plate

300 V

Screen

200 V

rP

700,000 Ω

gm

5 mA/V

8 pins - IO - International Octal

Remote-cutoff high-transconductance pentode, co-designated 6AB7/1853, for gain-controlled high-frequency receiver and television amplification.

Base

7CC

Socket code

B7G

Sections

1

Heater

18 V / 100 mA

Plate

150 V / 2.5 W

Screen

150 V / 0.6 W

rP

250,000 Ω

gm

4.1 mA/V

7 pins - B7G - Miniature 7-contact

Semi-remote-cutoff miniature pentode for RF and IF amplification in 100 mA series-heater AC/DC radio receivers.

Base

—

Socket code

B7G

Sections

1

Heater

18 V / 100 mA

Plate

150 V / 2.5 W

Screen

150 V / 0.6 W

Ik max

20 mA

rP

250,000 Ω

gm

4.4 mA/V

7 pins - B7G - Miniature 7-contact

Controlled-warm-up semi-remote-cutoff pentode for RF/IF stages in 100 mA series-heater receivers, electrically similar to 18FW6.

Base

—

Socket code

B9E

Sections

1

Heater

18.9 V / 300 mA

Plate

300 V / 3 W

Screen

150 V / 0.75 W

Ik max

25 mA

rP

500,000 Ω

gm

6 mA/V

9 pins - B9E - Novar 9-contact

Semi-remote-cutoff pentode for gain-controlled RF/IF amplification, using an 18.9 V heater while retaining 6HR6 electrical characteristics.

Base

—

Socket code

IO

Sections

1

Heater

2 V / 60 mA

Plate

135 V

Screen

67.5 V

rP

800,000 Ω

gm

0.65 mA/V

IO - International Octal

Directly heated variable-mu battery pentode for gain-controlled RF amplification with economical 2 V, 60 mA filament operation.

Base

4M

Socket code

UX4

Sections

1

Heater

2 V / 60 mA

Plate

180 V

Screen

67.5 V

rP

1,000,000 Ω

gm

0.77 mA/V

μ

700

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

Directly heated remote-cutoff pentode for battery-receiver RF/IF amplification and automatic volume control, using a 2 V, 60 mA filament.

Base

4K

Socket code

UX4

Sections

1

Heater

2 V / 60 mA

Plate

180 V

Screen

67.5 V

rP

1,000,000 Ω

gm

0.75 mA/V

μ

720

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

Directly heated remote-cutoff RF pentode using a 2.0 V, 60 mA filament. Designed for Class A radio-frequency amplification, its variable-mu characteristic permits controlled gain in battery-operated receiver stages.

Base

8BR

Socket code

—

Sections

1

Heater

1.2 V / 130 mA

Plate

150 V / 1 W

Screen

150 V / 0.3 W

rP

125,000 Ω

gm

1.35 mA/V

8 pins

Remote-cutoff RF pentode using a 1.2 V, 0.13 A filament. Designed for variable-gain radio-frequency amplification, its remote-cutoff characteristic makes it particularly suitable for controlled RF/IF stages in low-voltage equipment.

Base

Refer to variations

Socket code

B7G

Sections

1

Heater

1.4 V / 25 mA

Plate

120 V / 0.25 W

Screen

90 V / 0.15 W

Ik max

2.5 mA

rP

450,000 Ω

gm

0.94 mA/V

7 pins - B7G - Miniature 7-contact

Battery variable-mu pentode designed for IF amplification and mixer service. Its controlled transconductance supports automatic-gain-control operation while the low-power filament construction suits portable receiver applications.

Base

—

Socket code

—

Sections

1

4 pins

Super-control remote-cutoff radio-frequency amplifier pentode.

Base

5Y

Socket code

UX5

Sections

1

Heater

2 V / 60 mA

Plate

180 V

Screen

67.5 V

rP

1,000,000 Ω

gm

0.77 mA/V

μ

700

5 pins - UX5 - Small 5-contact

Directly heated remote-cutoff RF pentode designed for Class A high-frequency amplification. Its variable-mu characteristic permits controlled gain in battery-operated receiver stages while maintaining low filament power requirements.

Base

—

Socket code

B7G

Sections

1

Heater

1.4 V / 50 mA

Plate

90 V

Screen

67.5 V

Ik max

5.5 mA

rP

500,000 Ω

gm

0.87 mA/V

7 pins - B7G - Miniature 7-contact

Directly heated variable-mu RF pentode designed for battery operation. Its gain-control characteristic makes it suitable for RF amplifier stages in portable receivers where automatic or manual gain variation is required.

Base

—

Socket code

—

Sections

1

Heater

1.2 V / 60 mA

Plate

120 V / 0.6 W

Screen

90 V / 0.1 W

Ik max

5 mA

Directly heated Russian pentode designed for high- and intermediate-frequency amplification in automatic-gain-control circuits. Its intended AGC service identifies a variable-gain signal role consistent with remote-cutoff pentode operation.

Base

7AO

Socket code

B8G

Sections

1

Heater

1.4 V / 50 mA

Plate

110 V

Screen

110 V

rP

1,000,000 Ω

gm

0.8 mA/V

8 pins - B8G - Loctal 8-contact

Directly heated semi-remote-cutoff RF pentode using a 1.4 V, 50 mA filament. Manufacturer handbook data identify it for variable-gain high-frequency amplification in low-power receiving equipment.

Base

—

Socket code

—

Sections

1

Heater

2 V / 120 mA

Plate

180 V / 0.5 W

Screen

90 V / 0.1 W

rP

800,000 Ω

gm

1 mA/V

7 pins

Super-control RF amplifier pentode. Its manufacturer designation identifies an extended-control characteristic intended for variable-gain radio-frequency amplification, making automatic gain control a central part of its receiver application.

Base

5Y

Socket code

IO

Sections

1

Heater

1.4 V / 50 mA

Plate

110 V

Screen

110 V

rP

800,000 Ω

gm

0.75 mA/V

μ

640

7 pins - IO - International Octal

Remote-cutoff RF pentode designed for variable-gain battery receiver service. Its directly heated construction combines low filament demand with controlled transconductance for automatic-gain-control RF stages.

Base

5Y

Socket code

IO

Sections

1

Heater

1.4 V / 50 mA

Plate

110 V

Screen

110 V

rP

800,000 Ω

gm

0.75 mA/V

7 pins - IO - International Octal

GT-envelope remote-cutoff RF pentode for variable-gain battery receiver service. It retains the controlled-transconductance RF amplifier function of the 1P5 family in a tubular glass envelope.

Base

6AR

Socket code

B7G

Sections

1

Heater

1.25 V / 50 mA

Plate

100 V / 0.17 W

Screen

90 V / 0.15 W

Ik max

6.5 mA

rP

170,000 Ω

gm

0.66 mA/V

7 pins - B7G - Miniature 7-contact

Ruggedized filament-type semi-remote-cutoff pentode for RF and IF amplification in portable military equipment. It combines variable-gain receiver operation with strengthened construction for demanding field service.

Base

7BK

Socket code

B7G

Sections

1

Heater

26.5 V / 70 mA

Plate

250 V / 3 W

Screen

100 V / 0.4 W

rP

1,000,000 Ω

gm

4 mA/V

7 pins - B7G - Miniature 7-contact

Seven-pin miniature remote-cutoff pentode designed for aircraft receivers powered from storage batteries. Its 26.5 V, 70 mA heater and high transconductance support variable-gain RF/IF amplification in airborne radio equipment.

Base

7BK

Socket code

B7G

Sections

1

Heater

26.5 V / 70 mA

Plate

300 V

Screen

150 V

rP

720,000 Ω

gm

2 mA/V

7 pins - B7G - Miniature 7-contact

Remote-cutoff pentode using a 26.5 V, 70 mA heater. Manufacturer handbook data provide representative operating characteristics for controlled-gain signal amplification, with the extended heater voltage suited to series or specialized supply arrangements.

Base

—

Socket code

MEDIUM6

Sections

1

Heater

2 V / 1.6 A

Plate

250 V

Screen

75 V

rP

700,000 Ω

gm

1.2 mA/V

μ

850

6 pins - MEDIUM6 - Medium 6-contact base

Western Electric variable-mu suppressor-grid pentode for high-frequency or audio-frequency voltage amplification and modulation. Its controlled characteristic permits gain variation while supporting a broader range of signal and modulation applications.

Base

—

Socket code

UX4

Sections

1

Heater

10 V / 320 mA

Plate

250 V

Screen

100 V

rP

1,000,000 Ω

gm

1.1 mA/V

μ

1,100

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

Western Electric heater-cathode general-purpose pentode, cross-referenced by the manufacturer to type 24A.

Base

4M

Socket code

IO

Sections

1

Heater

2 V / 60 mA

Plate

180 V

Screen

67.5 V

rP

400,000 Ω

gm

0.62 mA/V

μ

620

7 pins - IO - International Octal

Variable-mu high-frequency amplifier pentode. Manufacturer documentation identifies it for controlled-gain RF amplification, using the extended-cutoff characteristic characteristic of early automatic-volume-control receiver stages.

Base

—

Socket code

IO

Sections

1

Heater

2 V / 60 mA

Plate

180 V

Screen

67.5 V

rP

600,000 Ω

gm

0.6 mA/V

7 pins - IO - International Octal

Directly heated battery RF pentode designed for radio-frequency amplification in portable receiving equipment.

Base

5F

Socket code

UX5

Sections

1

Heater

6.3 V / 300 mA

Plate

250 V

Screen

90 V

rP

1,000,000 Ω

gm

1.05 mA/V

μ

1,050

5 pins - UX5 - Small 5-contact

Remote-cutoff RF pentode using a 6.3 V, 0.3 A heater. Designed for variable-gain high-frequency amplification, it is suited to automatic-volume-control stages in radio receivers.

Base

—

Socket code

—

Sections

1

Heater

6.3 V / 300 mA

Variable-mu RF pentode published as type 39/44. Its extended-control characteristic supports automatic-volume-control RF amplification in receiving equipment, combining high-frequency gain with gradual cutoff under increasing grid bias.

Base

7CC

Socket code

B7G

Sections

1

Heater

3.15 V / 600 mA

Plate

300 V / 3 W

Screen

220 V / 0.6 W

Ik max

18 mA

rP

1,000,000 Ω

gm

4.4 mA/V

7 pins - B7G - Miniature 7-contact

Controlled-warm-up remote-cutoff RF/IF pentode equivalent to 6BA6. It combines variable-gain receiver amplification with heater characteristics designed for series-string equipment requiring coordinated warm-up behavior.

Base

—

Socket code

B9A

Sections

1

Heater

6.3 V / 600 mA

Plate

250 V / 2.5 W

Screen

250 V / 0.65 W

gm

6.1 mA/V

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

Variable-transconductance RF pentode for receiver and television amplifier service. Its gain-control characteristic supports regulated RF or IF amplification in circuits where signal level varies substantially.

Base

7CM

Socket code

B7G

Sections

1

Heater

3.15 V / 600 mA

Plate

300 V / 2.5 W

Screen

150 V / 0.5 W

Ik max

15 mA

rP

600,000 Ω

gm

6.1 mA/V

7 pins - B7G - Miniature 7-contact

Semi-remote-cutoff pentode designed for gain-controlled television video-IF amplifier stages. Its transfer characteristic permits effective AGC while maintaining the bandwidth required for television intermediate-frequency signals.

Base

9AQ

Socket code

B9A

Sections

1

Heater

3.15 V / 600 mA

Plate

250 V / 2.5 W

Screen

250 V / 0.65 W

Ik max

20 mA

rP

500,000 Ω

gm

12.5 mA/V

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

Semi-remote-cutoff pentode designed as an IF amplifier in color and black-and-white television receivers. Its controlled transconductance supports AGC operation in wideband television intermediate-frequency stages.

Base

—

Socket code

B9A

Sections

1

Heater

3.15 V / 600 mA

Plate

300 V / 2.5 W

Screen

300 V / 0.55 W

Ik max

25 mA

rP

143,000 Ω

gm

14 mA/V

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

Semi-remote-cutoff pentode designed for AGC-controlled television IF amplifier stages. Its gradual cutoff characteristic provides useful gain regulation while handling wideband television intermediate-frequency signals.

Base

9PM

Socket code

B9A

Sections

1

Heater

3.5 V / 600 mA

Plate

330 V / 3.1 W

Screen

330 V / 0.6 W

rP

160,000 Ω

gm

18 mA/V

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

Semi-remote-cutoff frame-grid pentode designed for television IF amplification around 40 MHz. Frame-grid construction provides high transconductance while the controlled cutoff characteristic supports automatic gain regulation.