Electronic tube and vacuum tube catalog

Base

Refer to variations

Socket code

SMALL5

Electrical Summary

Heater	35 V / 435 A
Plate	8,000 V / 150,000 W
gm	3.1 mA/V
μ	30

Sections

1

SMALL5 - Small 5-contact transmitting-tube base

Western Electric water-cooled transmitting triode for very-high-power Class B RF service. Published operation reaches tens of kilowatts of RF output, making it a tube for major fixed broadcast, communications, and industrial transmitter installations.

Base

Refer to variations

Socket code

B9A

Electrical Summary

Heater	2.5 V / 9 A
Plate	1,500 V
Ik max	2.5 A
V Drop	10 V

Sections

1

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

Gas-filled grid-controlled thyratron for controlled rectifier, relay, motor-control, industrial switching, or pulse service.

Base

Refer to variations

Socket code

IO

Electrical Summary

Heater	2.5 V / 9 A
Plate	1,500 V
Ik max	30 A
V Drop	10 V

Sections

1

8 pins - IO - International Octal

Gas and mercury-vapor negative-control triode thyratron, co-designated 710/6011, for substantial grid-controlled industrial switching.