Electronic tube and vacuum tube catalog

Base

—

Socket code

B7G

Electrical Summary

Heater	12.6 V / 150 mA
Plate	300 V / 1 W
Ik max	14 mA
rP	700,000 Ω
gm	1.5 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Pentagrid gated-amplifier tube designed as a combined television sync separator and sync clipper, using multiple control grids for pulse gating and synchronization processing.

Base

—

Socket code

B7G

Electrical Summary

Heater	12.6 V / 150 mA
Plate	330 V / 2 W
Screen	330 V
Ik max	20 mA
rP	150,000 Ω
gm	0.8 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Dual-control heptode for gated amplification and specialized signal processing, with separate control grids allowing one signal to modulate or gate another.

Base

7CH

Socket code

B9A

Electrical Summary

Heater	6.3 V / 300 mA
Plate	250 V / 1 W
Screen	250 V / 1 W
Ik max	20 mA
gm	2 mA/V

Sections

1

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

Miniature dual-control heptode for computer, control, and switching applications, using separate control grids for logic, gating, and industrial control functions.

Base

7CH

Socket code

B7G

Electrical Summary

Heater	6.3 V / 300 mA
Plate	250 V
gm	2.4 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Long-life dual-control heptode designed for computer and control equipment, supporting logic, switching, gating, and related functions during extended operation.

Base

Refer to variations

Socket code

B7G

Electrical Summary

Heater	6.3 V / 270 mA
Plate	250 V

Sections

1

B7G - Miniature 7-contact

Dual-control heptode designed specifically as a gated amplifier in computer circuits, allowing one control signal to gate amplification of another.

Base

7CH

Socket code

—

Electrical Summary

Heater	6.3 V / 300 mA
Plate	250 V
Screen	125 V
rP	47,000 Ω

Sections

1

7 pins

Pentagrid amplifier for specialized gating, mixing, amplification, and control applications, with comparatively low plate resistance for a multi-grid heptode.

Base

—

Socket code

B7G

Electrical Summary

Heater	6.3 V / 485 mA
Plate	250 V / 2 W
Screen	150 V / 0.5 W
Ik max	20 mA
gm	16 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Russian high-transconductance converting heptode intended for pulse-operated stationary equipment, combining signal conversion with unusually high transconductance and substantial plate ratings.

Base

7CH

Socket code

B7G

Electrical Summary

Heater	6.3 V / 300 mA
Plate	300 V / 2 W
Screen	300 V / 1 W
gm	1.9 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Pentagrid gated-amplifier tube used in color television receivers as a combined sync separator and sync clipper, with dual-control grids for pulse processing.

Base

7CH

Socket code

B7G

Electrical Summary

Heater	6.3 V / 300 mA
Plate	300 V / 1 W
Screen	100 V / 1 W
Ik max	14 mA
rP	1,000,000 Ω
gm	1.1 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Sharp-cutoff dual-control heptode designed for television gated-amplifier and synchronization service, particularly combined sync separation and clipping.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 320 mA
Plate	800 V / 8 W
Screen	200 V / 0.8 W

Sections

1

Russian high-frequency heptode with hysteretic transfer characteristic for fast discriminators, binary storage, counters, switching, and limiting circuits.

Base

Refer to variations

Socket code

B7G

Electrical Summary

Heater	6.3 V / 270 mA
Plate	250 V / 1 W
Ik max	20 mA

Sections

1

7 pins - B7G - Miniature 7-contact

Special-quality dual-control heptode for professional gated-amplifier, mixing, modulation, and industrial control applications.

Base

Refer to variations

Socket code

B7G

Electrical Summary

Heater	6.3 V / 300 mA
Plate	300 V / 1 W
Screen	300 V / 1 W
Ik max	14 mA
rP	1,000,000 Ω
gm	1.1 mA/V

Sections

1

7 pins - B7G - Miniature 7-contact

Dual-control heptode for television pulse, gated-amplifier, and frequency-conversion circuits, with separate grids allowing effective signal gating and mixing.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 300 mA
Plate	250 V / 1 W
Screen	250 V / 1 W
Ik max	20 mA

Sections

1

Long-life, high-reliability heptode designed specifically for electronic switching, with tight tolerances and an interface-free cathode for extended dependable operation.

Base

—

Socket code

B7G

Electrical Summary

Heater	6.3 V / 300 mA
Plate	250 V / 1 W
Screen	250 V / 1 W
Ik max	20 mA

Sections

1

7 pins - B7G - Miniature 7-contact

Long-life heptode designed for electronic switching and gating rather than ordinary receiver conversion, using multiple control grids for effective current control.