Electronic tube and vacuum tube catalog

Base

8AO

Socket code

—

Electrical Summary

Heater	117 V / 90 mA
Plate	S2: 117 V
Screen	S2: 117 V
Rectifier	S1: 75 mA
V Drop	S1: 16 V
V Inverse	S1: 350 V
rP	S2: 17,000 Ω
gm	S2: 5.3 mA/V

Sections

2

8 pins

Combination tube with a high-voltage heater for line-operated equipment, integrating rectifier and beam-power audio-output functions in a single envelope.

Base

8A0

Socket code

Refer to variations

Electrical Summary

Heater	117 V / 90 mA
Plate	S2: 117 V / 6 W
Screen	S2: 117 V / 1 W
Rectifier	S1: 75 mA
V Inverse	S1: 350 V
rP	S2: 13,000 Ω
gm	S2: 5.3 mA/V

Sections

2

8 pins

117 V line-operated combination tube containing a rectifier and beam-power audio output section, intended for transformerless radio and related consumer equipment.

Base

—

Socket code

IO

Electrical Summary

Heater	117 V / 90 mA
Plate	S2: 117 V / 6 W
Screen	S2: 117 V / 1 W
Rectifier	S1: 76 mA
V Drop	S1: 16 V
V Inverse	S1: 350 V
rP	S2: 17,000 Ω
gm	S2: 5.3 mA/V

Sections

2

8 pins - IO - International Octal

Line-operated multi-section tube combining rectification with beam-power audio amplification, using a high-voltage heater suitable for direct or series supply operation.

Base

8AV

Socket code

—

Electrical Summary

Heater	117 V / 90 mA
Plate	S2: 117 V / 5.5 W
Screen	S2: 117 V / 1 W
Rectifier	S1: 75 mA
V Drop	S1: 6 V
V Inverse	S1: 350 V
rP	S2: 16,000 Ω
gm	S2: 7 mA/V

Sections

2

8 pins

117 V combination tube containing a half-wave rectifier and beam-power amplifier, intended for transformerless equipment with the power section providing Class-A audio output.

Base

8Z

Socket code

IO

Electrical Summary

Heater	32.5 V / 300 mA
Plate	S2: 90 V
Screen	S2: 90 V
Rectifier	S1: 60 mA
V Inverse	S1: 1,250 V
rP	S2: 15,000 Ω
gm	S2: 6 mA/V
μ	S2: 90

Sections

2

8 pins - IO - International Octal

Combination AC/DC receiver tube integrating a half-wave rectifier with a beam-power audio-output section, allowing power-supply rectification and loudspeaker amplification in one envelope.

Base

8AB

Socket code

IO

Electrical Summary

Heater	70 V / 150 mA
Plate	S1: 110 VS2: 110 V
Screen	S1: 110 V
Rectifier	S2: 60 mA
V Drop	S2: 14 V
gm	S1: 4.8 mA/V
μ	S1: 80

Sections

2

8 pins - IO - International Octal

Combined beam-power amplifier and half-wave rectifier with a tapped heater, designed for series-heater receiving equipment.

Base

8AA

Socket code

IO

Electrical Summary

Heater	70 V / 150 mA
Plate	S2: 117 V / 10 W
Screen	S2: 117 V / 1 W
Ik max	S2: 65 mA
Rectifier	S1: 70 mAS2: 77 mA
V Drop	S1: 20 VS2: 20 V
V Inverse	S1: 350 VS2: 390 V
rP	S2: 15,000 Ω

Sections

2

8 pins - IO - International Octal

Combined half-wave rectifier and beam-power amplifier designed for AC/DC receiver power supply and audio-output service.

Base

8A0

Socket code

IO

Electrical Summary

Heater	117 V / 90 mA
Plate	S2: 117 V / 6 W
Screen	S2: 117 V / 1 W
Rectifier	S1: 75 mA
V Drop	S1: 16 V
V Inverse	S1: 350 V
rP	S2: 13,000 Ω
gm	S2: 5.3 mA/V

Sections

2

8 pins - IO - International Octal

Beam-power output tube intended for audio-frequency power amplification, providing useful loudspeaker-driving output in receiving and general amplifier equipment.