Electronic tube and vacuum tube catalog

Base

9DC

Socket code

B9A

Sections

2

Heater

4.6 V / 600 mA

Plate

S1: 250 V / 1.7 W · S2: 250 V / 1.7 W

Screen

S1: 200 V / 0.75 W

Ik max

S1: 14 mA · S2: 14 mA

rP

S1: 400,000 Ω · S2: 12,500 Ω

gm

S1: 5 mA/V · S2: 5 mA/V

μ

S2: 20

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

Medium-mu triode plus sharp-cutoff pentode used as a television frequency changer.

Base

9DC

Socket code

B9A

Sections

2

Heater

6.3 V / 300 mA

Plate

S1: 250 V / 1.5 W · S2: 250 V / 1.7 W

Screen

S2: 175 V / 0.75 W

Ik max

S1: 14 mA · S2: 14 mA

rP

S1: 12,500 Ω · S2: 500,000 Ω

gm

S1: 5.2 mA/V · S2: 6.2 mA/V

μ

S1: 65

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

Medium-mu triode plus sharp-cutoff pentode designed for television frequency-changer and oscillator-mixer service.