Electronic tube and vacuum tube catalog

Base

Refer to variations

Socket code

Refer to variations

Sections

1

Heater

12.6 V / 650 mA

Plate

600 V / 10 W

Screen

250 V

Ik max

55 mA

gm

2.5 mA/V

μ

8.5

Twin high-frequency tetrode developed from the 832A for RF amplifier, frequency-multiplier, and modulator service. Its paired tetrode structure supports balanced high-frequency power circuits.

Base

Refer to variations

Socket code

B7A

Sections

2

Heater

6.3 V / 1.3 A

Plate

S1: 250 V

Screen

S1: 250 V

gm

S1: 2.5 mA/V

μ

S1: 8

7 pins - B7A - Septar 7-contact

Double tetrode designed for RF Class-C and audio-frequency amplifier service. Two power sections share one envelope for paired or push-pull output operation.