Electronic tube and vacuum tube catalog

Base

6AU

Socket code

B7G

Sections

2

Heater

1.4 V / 50 mA

Plate

S2: 90 V

Screen

S2: 90 V

Ik max

S1: 0.25 mA · S2: 3 mA

rP

S2: 600,000 Ω

gm

S2: 0.625 mA/V

7 pins - B7G - Miniature 7-contact

Directly heated diode-pentode combining radio detection with audio-frequency voltage amplification in battery receivers. The diode recovers the signal while the sharp-cutoff pentode supplies subsequent audio gain.

Base

B7G

Socket code

B7G

Sections

2

Heater

1.4 V / 50 mA

Plate

S1: 90 V / 0.25 W

Screen

S1: 90 V / 0.06 W

Ik max

S1: 4.5 mA · S2: 0.2 mA

Rectifier

S2: 200 mA

V Inverse

S2: 100 V

rP

S1: 500,000 Ω

gm

S1: 0.72 mA/V

μ

S1: 13.5

7 pins - B7G - Miniature 7-contact

Directly heated battery diode-pentode, equivalent to 1S5, combining signal detection with audio preamplification. Its low-consumption 1.4 V, 50 mA filament and high-resistance pentode suit portable radio receivers.