Electronic tube and vacuum tube catalog

Base

—

Socket code

IO

Electrical Summary

Heater	12.6 V / 100 mA
Plate	S1: 300 V / 0.5 W
Ik max	S1: 5 mA

Sections

2

IO - International Octal

Ediswan/Mazda electronic tuning indicator for visual receiver tuning or signal-level indication.

Base

60

Socket code

IO

Electrical Summary

Heater	12.6 V / 150 mA
Plate	S1: 250 V
rP	S1: 9,500 Ω
gm	S1: 1.45 mA/V
μ	S1: 13.8

Sections

2

8 pins - IO - International Octal

Electron-ray visual indicator for receiver tuning or electrical level indication, using a fluorescent display whose pattern changes with control voltage.

Base

—

Socket code

IO

Electrical Summary

Heater	12.6 V / 150 mA

Sections

2

IO - International Octal

Electron-ray visual indicator for receiver tuning or electrical level indication, using a fluorescent display whose pattern changes with control voltage.

Base

7AL

Socket code

IO

Electrical Summary

Heater	12.6 V / 150 mA
Plate	S1: 250 VS2: 250 V

Sections

2

7 pins - IO - International Octal

Magic-eye tuning indicator combining a triode control section with a fluorescent electron-ray display for receiver tuning indication.

Base

—

Socket code

—

Electrical Summary

Heater	1.5 V / 95 mA

Sections

1

High-reliability Russian electron-light indicator designed to display voltage level in semiconductor circuitry and compact electronic equipment.

Base

—

Socket code

—

Electrical Summary

Heater	1.4 V / 25 mA
Plate	90 V / 0.025 W
Ik max	0.3 mA

Sections

1

Directly heated subminiature low-power tuning indicator for battery-operated or mains-powered radio receivers.

Base

SDN

Socket code

Refer to variations

Electrical Summary

Heater	1.4 V / 25 mA
Plate	90 V / 0.045 W
Ik max	0.3 mA

Sections

1

8 pins

Electron-ray visual indicator for receiver tuning or electrical level indication, using a fluorescent display whose pattern changes with control voltage.

Base

—

Socket code

—

Electrical Summary

Heater	1.4 V / 25 mA
Plate	90 V

Sections

1

Electron-ray visual indicator for receiver tuning or electrical level indication, using a fluorescent display whose pattern changes with control voltage.

Base

Refer to variations

Socket code

Refer to variations

Electrical Summary

Heater	1.4 V / 25 mA
Plate	300 V / 0.045 W
Ik max	0.3 mA

Sections

1

8 pins

Electron-ray visual indicator for receiver tuning or electrical level indication, using a fluorescent display whose pattern changes with control voltage.

Base

6R

Socket code

—

Electrical Summary

Heater	2.5 V / 800 mA
Plate	S2: 250 V

Sections

2

6 pins

Electron-ray visual indicator for receiver tuning or electrical level indication, using a fluorescent display whose pattern changes with control voltage.

Base

—

Socket code

—

Electrical Summary

Heater	2.5 V / 800 mA
Plate	S1: 250 V

Sections

2

7 pins

Circular fluorescent tuning indicator incorporating an internally connected remote-cutoff triode amplifier.

Base

—

Socket code

B4

Electrical Summary

-

Sections

1

B4 - European 4-pin base

Neon gas-discharge visual indicator for receiver tuning or electrical level indication, using controlled glow rather than a conventional fluorescent electron-ray target.

Base

—

Socket code

—

Electrical Summary

-

Sections

1

Neon gas-discharge visual indicator for receiver tuning or electrical level indication, using controlled glow rather than a conventional fluorescent electron-ray target.

Base

—

Socket code

—

Electrical Summary

Screen	400 V / 8 W

Sections

1

Neon gas-discharge visual indicator for receiver tuning or electrical level indication, using controlled glow rather than a conventional fluorescent electron-ray target.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 200 mA
Plate	S1: 350 V
rP	S1: 100,000 Ω
gm	S1: 0.65 mA/V
μ	S1: 65

Sections

2

Visual tuning indicator combining a triode amplifier with a fluorescent cathode-ray display whose luminous pattern varies with tuning-control voltage.

Base

—

Socket code

B7G

Electrical Summary

Heater	6.3 V / 140 mA

Sections

2

7 pins - B7G - Miniature 7-contact

National Union twin indicator tube providing two built-in visual indications for equipment test, status, or operating-condition display.

Base

Subminiature wire-leaded

Socket code

B5D

Electrical Summary

Heater	1 V / 30 mA
Plate	65 V
Ik max	0.75 mA
gm	0.45 mA/V
μ	30

Sections

1

5 pins - B5D - Subminiature wire-ended

Subminiature directly heated voltage-indicator tube, DM160/6977, designed to show the switching state of flip-flop and logic circuits with a visible luminous strip.

Base

6R

Socket code

Refer to variations

Electrical Summary

Heater	6.3 V / 150 mA
Plate	S1: 135 V

Sections

2

6 pins

Electron-ray visual indicator for receiver tuning or electrical level indication, using a fluorescent display whose pattern changes with control voltage.

Base

7AG

Socket code

B7

Electrical Summary

Heater	6.3 V / 150 mA
Plate	150 V

Sections

1

8 pins - B7 - Medium 7-contact

Double-diode tuning indicator providing visual receiver indication through changes in fluorescent shadow angle.

Base

7AG

Socket code

IO

Electrical Summary

Heater	6.3 V / 150 mA
Plate	135 V
Ik max	2 mA

Sections

1

8 pins - IO - International Octal

Cathode-ray tuning indicator with two independently controlled shadow angles on a circular fluorescent screen.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 300 mA

Sections

1

Twin-shadow electron-ray tuning indicator.

Base

B8-6

Socket code

IO

Electrical Summary

Heater	6.3 V / 150 mA

Sections

1

8 pins - IO - International Octal

Electron-ray indicator designed especially for precise visual tuning of AM/FM radio receivers.

Base

Refer to variations

Socket code

B9A

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S1: 300 V / 0.2 W

Sections

2

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

Electron-ray visual indicator for receiver tuning or electrical level indication, using a fluorescent display whose pattern changes with control voltage.

Base

8EV

Socket code

IO

Electrical Summary

Heater	6.3 V / 200 mA
Plate	S1: 300 V

Sections

2

IO - International Octal

Electron-ray visual indicator for receiver tuning or electrical level indication, using a fluorescent display whose pattern changes with control voltage.

Base

Refer to variations

Socket code

B9A

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S1: 300 V / 0.2 W

Sections

2

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

Electron-ray visual indicator for receiver tuning or electrical level indication, using a fluorescent display whose pattern changes with control voltage.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 300 mA

Sections

1

Base

Refer to variations

Socket code

B9A

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S1: 3 WS2: 0.2 W
gm	S1: 0.5 mA/V
μ	S1: 24

Sections

2

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

Russian electron-ray indicator combining a triode control system with a fluorescent crater-anode display.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 580 mA
Plate	250 V / 0.4 W

Sections

1

Russian 6E2P electron-ray tuning indicator for FM receiver visual tuning, with fluorescent display and 6.3 V 580 mA heater.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 250 mA
Plate	300 V / 0.5 W

Sections

1

Russian 6E3P fluorescent electron-ray indicator for stereo tape-recorder visual tuning and level indication, with 6.3 V 250 mA heater.

Base

6R

Socket code

UX6

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S1: 250 V / 0.5 WS2: 250 V / 1 W
Ik max	S1: 5 mAS2: 5 mA
rP	S1: 1,000,000 Ω
gm	S1: 0.25 mA/V
μ	S1: 20

Sections

2

6 pins - UX6 - Small 6-contact

Classic glass electron-ray tuning indicator combining a triode control section with a fluorescent variable-shadow display for accurate receiver tuning.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 300 mA

Sections

1

Base

—

Socket code

IO

Electrical Summary

Heater	6.3 V / 300 mA
Plate	250 V

Sections

1

8 pins - IO - International Octal

Russian indirectly heated electron-beam tuning indicator used to display receiver tuning or signal strength. Its fluorescent display and control-electrode response provide a visible indication rather than conventional tetrode voltage amplification.

Base

Refer to variations

Socket code

B9A

Electrical Summary

Heater	6.3 V / 270 mA
Plate	S2: 0.5 W

Sections

2

B9A - Small-button Noval 9-contact

Miniature tuning indicator for broadcast receivers and tape recorders, using two converging fluorescent bars controlled by an internal triode.

Base

Refer to variations

Socket code

UX6

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S1: 250 V / 1 WS2: 250 V

Sections

2

6 pins - UX6 - Small 6-contact

Electron-ray visual indicator for receiver tuning or electrical level indication, using a fluorescent display whose pattern changes with control voltage.

Base

—

Socket code

IO

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S1: 250 V

Sections

2

IO - International Octal

Electron-ray visual indicator for receiver tuning or electrical level indication, using a fluorescent display whose pattern changes with control voltage.

Base

Refer to variations

Socket code

B9A

Electrical Summary

Heater	6.3 V / 300 mA

Sections

2

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

Electron-ray audio-level indicator designed specifically for tape recorders, providing a fluorescent visual display of changing recording signal level.

Base

IO8

Socket code

IO

Electrical Summary

Heater	6.3 V / 200 mA
Plate	S1: 0.5 W

Sections

2

8 pins - IO - International Octal

Dual-sensitivity cathode-ray tuning indicator producing a fluorescent Maltese-cross display for visual receiver tuning across differing control-voltage ranges.

Base

6R

Socket code

UX6

Electrical Summary

Heater	6.3 V / 150 mA
Plate	S2: 180 V

Sections

2

6 pins - UX6 - Small 6-contact

Triode-controlled visual tuning indicator combining a control triode with a fluorescent display for translating receiver control voltage into visible tuning indication.

Base

—

Socket code

UX6

Electrical Summary

Heater	6.3 V / 300 mA

Sections

2

6 pins - UX6 - Small 6-contact

Electron-ray tuning indicator providing visual indication of receiver tuning or changing signal-derived control voltage through a fluorescent display.

Base

6R

Socket code

UX6

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S1: 250 V

Sections

2

6 pins - UX6 - Small 6-contact

Vacuum tuning indicator with integral triode control section, converting receiver control-voltage changes into a visible fluorescent tuning display.

Base

6R

Socket code

UX6

Electrical Summary

Heater	6.3 V / 300 mA
Plate	S1: 285 V / 1 WS2: 285 V

Sections

2

6 pins - UX6 - Small 6-contact

Circular electron-ray tuning indicator with integral remote-cutoff triode amplifier, producing a variable fluorescent shadow for accurate receiver tuning.

Base

—

Socket code

—

Electrical Summary

Heater	6.3 V / 300 mA

Sections

1

Base

—

Socket code

IO

Electrical Summary

Heater	6.3 V / 300 mA

Sections

2

8 pins - IO - International Octal

Magic-eye electron-ray tuning indicator using a fluorescent target and signal-controlled shadow for visual receiver tuning.

Base

—

Socket code

OCTAL7

Electrical Summary

Heater	6.3 V / 300 mA

Sections

1

OCTAL7 - 7-contact octal-family base

Electron-ray tuning indicator for visual receiver tuning and signal-level indication through a fluorescent display.

Base

—

Socket code

—

Electrical Summary

Heater	0.7 V / 35 mA
Plate	65 V
Ik max	0.75 mA
μ	22

Sections

1

4 pins

Long-life directly heated end-view indicator triode producing blue-green light proportional to plate current for compact visual electrical-level indication.

Base

—

Socket code

—

Electrical Summary

Heater	4 V / 500 mA
Plate	S1: 250 V

Sections

2

7 pins

Mazda AC/ME cathode-ray tuning indicator for AC-mains receivers, using a fluorescent target and control electrode for visible tuning indication.

Base

P26

Socket code

—

Electrical Summary

Heater	4 V / 300 mA
Plate	S1: 250 V

Sections

2

Four-volt tuning-cross visual indicator producing a fluorescent cross-pattern controlled by signal-derived voltage for accurate receiver tuning.

Base

P30

Socket code

—

Electrical Summary

Heater	4 V / 320 mA
Plate	S1: 250 V / 1.5 W
Ik max	S1: 12 mA
rP	S1: 25,000 Ω
gm	S1: 2 mA/V
μ	S1: 50

Sections

2

Electron-ray tuning indicator combining a control triode with fluorescent display for visual tuning indication in AC-mains receivers.

Base

—

Socket code

—

Electrical Summary

-

Sections

2

Base

Subminiature wire-leaded

Socket code

B4D

Electrical Summary

Heater	1 V / 30 mA
Plate	65 V
Ik max	0.75 mA
μ	5

Sections

1

B4D - Subminiature wire-ended

Directly heated subminiature voltage indicator designed for visual indication of flip-flop state and other low-power logic conditions.