Electronic tube and vacuum tube catalog

Base

12ER

Socket code

B12C

Sections

3

Heater

6.3 V / 600 mA

Plate

S1: 300 V / 1.5 W · S2: 300 V / 1.1 W · S3: 300 V / 1.1 W

Screen

S2: 150 V / 0.75 W · S3: 150 V

Ik max

S1: 20 mA · S2: 12 mA

gm

S1: 1.8 mA/V · S2: 1.7 mA/V · S3: 6 mA/V

μ

S1: 18

12 pins - B12C - Duodecar 12-contact

Compactron combining a medium-mu triode with twin pentodes for television vertical-deflection oscillator/driver and combined sync/automatic-gain-control circuitry.

Base

—

Socket code

B9A

Sections

3

Heater

6.3 V / 600 mA

rP

S3: 23,000 Ω

gm

S1: 5.25 mA/V · S2: 5.25 mA/V

μ

S3: 1.1

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

Russian combination tube containing a triode and two power pentodes for phase inversion and push-pull low-frequency power-output amplification.

Base

12ER

Socket code

B12C

Sections

3

Heater

8.4 V / 450 mA

Plate

S1: 300 V / 1.5 W · S2: 300 V / 1.1 W · S3: 300 V / 1.1 W

Screen

S2: 150 V · S3: 150 V

Ik max

S1: 20 mA · S2: 12 mA · S3: 12 mA

gm

S1: 1.8 mA/V · S2: 1.7 mA/V · S3: 1.7 mA/V

μ

S1: 18

12 pins - B12C - Duodecar 12-contact

Compactron heater variant of 6BA11, combining a medium-mu triode with twin pentodes for television vertical-deflection oscillator and sync/AGC circuitry.