Electronic tube and vacuum tube catalog

Base

8BO

Socket code

IO

Sections

2

Heater

6.3 V / 1.05 A

Plate

S1: 350 V / 1 W · S2: 550 V / 10 W

Ik max

S1: 20 mA · S2: 50 mA

rP

S1: 34,000 Ω · S2: 770 Ω

gm

S1: 1.9 mA/V · S2: 6.5 mA/V

μ

S1: 45 · S2: 5

8 pins - IO - International Octal

Dissimilar dual triode designed as a television vertical-deflection oscillator and amplifier. A high-gain section drives the circuit while the low-mu power section supplies the current and pulse capability required by the vertical output stage.

Base

8BD

Socket code

B9A

Sections

2

Heater

6.3 V / 900 mA

Plate

S1: 330 V / 1.5 W · S2: 220 V / 10 W

Ik max

S1: 20 mA · S2: 100 mA

rP

S1: 40,000 Ω · S2: 750 Ω

gm

S1: 2 mA/V · S2: 7.5 mA/V

μ

S1: 80 · S2: 5.5

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

Dual triode intended for television vertical-deflection service, combining oscillator/driver and power-output functions where applicable. Manufacturer data emphasize vertical-sweep operation, pulse-voltage capability, and the stronger section’s current and dissipation requirements.