Electronic tube and vacuum tube catalog

Base

7DF

Socket code

B7G

Sections

1

Heater

4.2 V / 450 mA

Plate

300 V / 1.5 W

Screen

150 V

Ik max

13 mA

7 pins - B7G - Miniature 7-contact

Gated-beam FM and intercarrier-sound discriminator tube for limiter-discriminator service in television and FM receivers, combining detection and signal processing in one specialized beam structure.

Base

—

Socket code

B10B

Sections

1

Heater

6.3 V / 365 mA

Plate

250 V / 2 W

Screen

180 V / 0.5 W

Ik max

20 mA

rP

110,000 Ω

gm

10 mA/V

10 pins - B10B - Decal 10-contact

Twin tetrode designed for VHF RF amplification and autodyne mixer service in receiver front ends.

Base

7DF

Socket code

B7G

Sections

1

Heater

6.3 V / 300 mA

Plate

300 V

Screen

110 V

Ik max

13 mA

rP

5,400 Ω

7 pins - B7G - Miniature 7-contact

Gated-beam tube combining limiter, discriminator, and audio-voltage amplification for television intercarrier-sound and FM receiver circuits.

Base

A35B-4

Socket code

—

Sections

1

Heater

4 V / 80 mA

Plate

100 V

gm

1 mA/V

4 pins

Directly heated double-grid battery valve using a space-charge grid for low-voltage receiver service, enabling useful amplification from unusually small anode supplies.

Base

—

Socket code

B5

Sections

1

Heater

20 V / 180 mA

Plate

100 V

gm

0.1 mA/V

5 pins - B5 - European 5-pin base

Philips tetrode oscillator-modulator tube with auxiliary grid, designed to combine RF oscillation and modulation functions within a single multi-grid valve.

Base

—

Socket code

B4

Sections

1

Heater

2 V / 200 mA

Plate

100 V

rP

3,750 Ω

gm

1.2 mA/V

μ

4.5

4 pins - B4 - European 4-pin base

Directly heated double-grid valve for superheterodyne receivers, especially portable sets. It can combine detector and local-oscillator functions in a single frequency-changing stage.

Base

—

Socket code

—

Sections

1

Heater

4 V / 180 mA

Plate

200 V

Double-grid mixer tube for series-heater superheterodyne receivers. Its two-grid structure performs frequency conversion in the receiver front end.

Base

—

Socket code

—

Sections

1

Heater

4 V / 1 A

Plate

200 V

Early indirectly heated double-grid mixer tube for superheterodyne frequency-changing service, combining incoming RF and local-oscillator signals.

Base

—

Socket code

B4

Sections

1

Heater

2 V / 100 mA

Plate

150 V

Screen

70 V

gm

1.1 mA/V

4 pins - B4 - European 4-pin base

Two-volt screen-grid valve for stable high-frequency amplification and sensitive detection, emphasizing low current consumption, low microphonics, and high electrode insulation in battery-operated receivers.

Base

—

Socket code

B4

Sections

1

Heater

4 V / 100 mA

rP

60,000 Ω

gm

0.66 mA/V

B4 - European 4-pin base

General-purpose screen-grid valve usable as detector or high- and low-frequency amplifier, providing flexible signal processing in early radio receiving equipment.

Base

—

Socket code

B4

Sections

1

Heater

6 V / 100 mA

Plate

150 V

B4 - European 4-pin base

High-efficiency screen-grid valve designed for high-frequency amplification and detector service in early radio receivers, combining useful gain with demodulation capability.