Electronic tube and vacuum tube catalog

Base

E9-1

Socket code

B9A

Sections

2

Heater

50 V / 100 mA

Plate

S1: 250 V / 1 W · S2: 250 V / 7 W

Screen

S2: 250 V / 1.8 W

Ik max

S1: 15 mA · S2: 50 mA

rP

S2: 15,000 Ω

gm

S1: 2.5 mA/V · S2: 6.8 mA/V

μ

S1: 70 · S2: 9.5

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

Triode/power-pentode combination for compact audio and receiver circuits, with a 7 W pentode output section.

Base

9EX

Socket code

B9A

Sections

2

Heater

50 V / 100 mA

Plate

S1: 300 V / 1 W · S2: 600 V / 7 W

Screen

S2: 300 V / 2 W

Ik max

S1: 15 mA · S2: 50 mA

rP

S1: 28,000 Ω · S2: 16,000 Ω

gm

S1: 2.2 mA/V · S2: 7.5 mA/V

μ

S1: 70 · S2: 9.5

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

Series-heater triode/pentode combination for audio voltage amplification and approximately 5 W power output.