Electronic tube and vacuum tube catalog

Base

B9A

Socket code

B9A

Sections

2

Heater

12.6 V / 150 mA

Plate

S1: 150 V / 0.75 W · S2: 300 V / 1.5 W

Screen

S2: 125 V / 1.25 W

Ik max

S2: 17.5 mA

rP

S1: 4,850 Ω

gm

S1: 3.5 mA/V

μ

S1: 17

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

Brimar 12AH8 indirectly heated triode-heptode radio frequency changer with common cathode, internally coupled oscillator grid, 6.3/12.6 V center-tapped heater and B9A base.

Base

8H

Socket code

IO

Sections

2

Heater

20 V / 150 mA

Plate

S1: 100 V · S2: 250 V / 2.5 W

Screen

S2: 100 V / 0.6 W

Ik max

S2: 18 mA

gm

S1: 2.3 mA/V

μ

S1: 15

8 pins - IO - International Octal

Rogers 20J8 (GM) indirectly heated triode-heptode superheterodyne frequency converter with 20 V 0.15 A heater, common cathode and 8H octal base.

Base

—

Socket code

—

Sections

2

Heater

6.3 V / 800 mA

Plate

S0: 150 V · S1: 250 V

Screen

S1: 250 V

μ

S0: 16

Mazda triode-heptode radio frequency changer.

Base

9CA

Socket code

B9A

Sections

2

Heater

6.3 V / 300 mA

Plate

S1: 250 V / 0.8 W · S2: 50 V

Ik max

S1: 6.5 mA · S2: 5 mA

gm

S1: 2.2 mA/V

μ

S1: 20

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

Rogers 6DS8 triode-heptode frequency converter for low-voltage automobile radios, 6.3 V 300 mA heater.

Base

—

Socket code

B7G

Sections

2

Heater

6.3 V / 300 mA

Plate

S1: 250 V / 0.8 W · S2: 300 V / 1.7 W

Ik max

S1: 6.5 mA · S2: 12.5 mA

gm

S1: 2.2 mA/V

μ

S1: 23.5

9 pins - B7G - Miniature 7-contact

Russian 6I1P (6И1П) indirectly heated triode-heptode frequency converter with shared cathode and 6.3 V 300 mA heater.

Base

—

Socket code

B7G

Sections

2

Heater

6.3 V / 300 mA

Plate

S1: 250 V / 0.75 W · S2: 300 V / 1.55 W

Ik max

S1: 10 mA · S2: 12.5 mA

gm

S1: 2.3 mA/V

μ

S1: 18

9 pins - B7G - Miniature 7-contact

Soviet 6I1P-EV rugged long-life triode-heptode frequency converter with shared cathode and 6.3 V 300 mA heater.

Base

—

Socket code

B7G

Sections

2

Heater

6.3 V / 300 mA

gm

S1: 2.3 mA/V

μ

S1: 18

9 pins - B7G - Miniature 7-contact

Soviet 6I1P-V rugged triode-heptode frequency converter with shared cathode, 6.3 V 300 mA heater and 2000-hour minimum service life.

Base

—

Socket code

—

Sections

2

Heater

6.3 V / 450 mA

Plate

S1: 250 V / 1.5 W · S2: 250 V / 0.5 W

Ik max

S1: 20 mA · S2: 8 mA

gm

S1: 9 mA/V · S2: 1.1 mA/V

μ

S1: 50

Soviet 6I4P triode-heptode for television noise gates and sync-pulse amplification, with separate cathodes and 6.3 V 450 mA heater.