Voltage - Pentode vacuum tubes

Pentode

Ruggedized pentode for dependable RF and audio-frequency amplification in military, industrial, and other demanding electronic equipment.

Base

9L

Socket

IO

Heater

6.3 V

Sections

1

Pentode

Russian secondary-emission pentode developed specifically for fast pulse amplification and electronic-control circuitry.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Russian secondary-emission pentode for pulse-signal amplification, providing ampere-class pulse anode and dynode currents.

Base

B9A

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Ruggedized Russian secondary-emission pentode for demanding pulse-signal amplification and electronic-control service.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Russian power-oriented pentode with approximately 9 W plate dissipation and published loaded output exceeding 2 W.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Russian pentode designed specifically for first-stage amplification in sound-recording and sound-reproducing equipment.

Base

B9A

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Wideband low-noise Russian pentode developed for sensitive amplifier input stages and television signal amplification.

Base

B9A

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Russian indirectly heated voltage-amplifier pentode; typical anode 250 V, 3 mA; printed transconductance 1.8 Ma/V.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Russian subminiature pentode for compact small-signal amplifier service with low heater current and modest plate dissipation.

Base

Not recorded

Socket

SUBMINIATURE7

Heater

6.3 V

Sections

1

Pentode

Ruggedized Russian subminiature pentode for dependable small-signal amplification under demanding mechanical and environmental conditions.

Base

Not recorded

Socket

SUBMINIATURE7

Heater

6.3 V

Sections

1

Pentode

Russian pentode documented with translated manufacturer electrical characteristics and ratings. The available source establishes conventional pentode operation but does not provide sufficiently explicit application or cutoff terminology to support a narrower functional classification.

Base

Not recorded

Socket

B7G

Heater

6.3 V

Sections

1

Pentode

Russian indirectly heated voltage-amplifier pentode; typical anode 150 V, 26 mA; printed transconductance 26 Ma/V.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

National Union high-voltage pentode designed for control, regulator, and high-voltage sweep circuits operating in the kilovolt range. Its defining role is high-voltage electronic control rather than ordinary receiving or audio amplification.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

High-temperature reliable pentode from Bendix, designed for dependable operation under elevated-temperature conditions. Its manufacturer description emphasizes environmental reliability rather than a specialized signal-processing or power-output function.

Base

Not recorded

Socket

B7G

Heater

6.3 V

Sections

1

Pentode

Reliable subminiature RF pentode with flying leads, designed for guided-weapon equipment. Mullard documentation specifies severe vibration capability, combining miniature RF amplification with reliability for demanding military electronic systems.

Base

B8D/F

Socket

SUBMINIATURE8

Heater

6.3 V

Sections

1

Pentode

Reliable subminiature pentode with flying leads for guided-weapon equipment. Manufacturer documentation emphasizes severe vibration capability and dependable miniature signal operation for demanding military electronic systems.

Base

B8D/F

Socket

SUBMINIATURE8

Heater

6.3 V

Sections

1

Pentode

Reliable subminiature low-noise-output pentode with flying leads for guided-weapon equipment. It combines reduced noise, miniature construction, and severe-vibration capability for sensitive signal stages in demanding military electronics.

Base

B8D/F

Socket

SUBMINIATURE8

Heater

6.3 V

Sections

1

Pentode

Reliable subminiature pentode for guided-weapon equipment, with a short suppressor base allowing grid 3 to serve as a second control electrode. Its construction supports specialized signal-control functions under severe vibration.

Base

B8D/F

Socket

SUBMINIATURE8

Heater

6.3 V

Sections

1

Pentode

Rugged seven-pin all-glass pentode engineered for low catastrophic failure, long cutoff operation, frequent heater switching, and low heater-cathode leakage. Its construction emphasizes reliability and long-term stability in demanding electronic service.

Base

Not recorded

Socket

B7G

Heater

6.3 V

Sections

1

Pentode

Rugged nine-pin all-glass pentode designed for video-amplifier applications. Special electrode, cathode, heater, and glass construction reduce catastrophic failure and support long cutoff periods, frequent heater switching, and low leakage.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

High-voltage pentode designed for wide plate-voltage swing in shunt or series high-voltage regulator circuits. Its primary function is electronic high-voltage regulation and control rather than ordinary small-signal amplification.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

High-transconductance long-life pentode for wide-band amplification, explicitly paired with D3A in manufacturer literature. It combines substantial gain-bandwidth capability with extended service life for professional broadband signal equipment.

Base

9EQ

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Wideband pentode amplifier with very high transconductance, co-designated E280F. Its manufacturer-defined role is broadband signal amplification where high gain and wide frequency response are required.

Base

9EQ

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Subminiature electrometer pentode normally operated in triode connection for logarithmic and extremely low-current measurements. Its defining function is ultra-sensitive instrumentation rather than conventional RF, audio, or power amplification.

Base

Not recorded

Socket

Not recorded

Heater

1.25 V

Sections

1

Pentode

Wideband pentode amplifier designed as a high-reliability replacement for 12BY7 and 12BY7A. It combines broadband signal amplification with enhanced reliability for professional electronic equipment.

Base

E9-1 / 9BF

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Premium-quality rugged pentode specified for a 10,000-hour service life. Amperex documentation emphasizes extended operating life and robust construction, making reliability and longevity its defining distinctions.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Premium high-transconductance subminiature video pentode designed for severe shock, vibration, high-temperature, and high-altitude operation. It combines wideband video amplification with unusually rugged environmental capability.

Base

8DL

Socket

B8D

Heater

26.5 V

Sections

1

Pentode

Premium-quality high-transconductance pentode specified for a 10,000-hour service life. Amperex documentation emphasizes extended professional reliability together with substantial transconductance for demanding signal-amplifier applications.

Base

Not recorded

Socket

B9A

Heater

6.3 V

Sections

1

Pentode

Brimar RF pentode with a 6.3 V, 0.3 A heater and high anode impedance. Manufacturer data identify it as a radio-frequency signal-amplifier tube rather than a power-output device.

Base

Not recorded

Socket

UX6

Heater

6.3 V

Sections

1

Pentode

Pentode documented with manufacturer and handbook Class A operating characteristics. The available source establishes conventional signal-amplifier operation but does not provide sufficiently explicit application or cutoff terminology for narrower classification.

Base

8BO

Socket

B8G

Heater

7 V

Sections

1

Pentode

Pentode documented with Class A ratings and operating characteristics. Available manufacturer and handbook material establishes signal-amplifier service without sufficiently explicit application or cutoff terminology for a more specialized functional type.

Base

8V

Socket

LOCTAL8

Heater

6.3 V

Sections

1

Pentode

Pentode documented with manufacturer Class A operating conditions. The available source supports conventional signal amplification but does not clearly establish a narrower cutoff, power, or specialized functional category.

Base

8V

Socket

B8G

Heater

7 V

Sections

1

Pentode

Straight television pentode designed for AC/DC series-heater operation. Ediswan documentation identifies it as a television signal tube, with series-string heater characteristics suited to transformerless receiver designs.

Base

Not recorded

Socket

B9A

Heater

7.3 V

Sections

1

Pentode

Subminiature pentode designed for Class C oscillator and frequency-multiplier service. Manufacturer documentation emphasizes long life and severe-environment operation, making RF generation and multiplication its defining function rather than linear amplification.

Base

Not recorded

Socket

SUBMINIATURE8

Heater

6.3 V

Sections

1

Pentode

Brimar RF pentode designed for receiver amplification. Its manufacturer documentation identifies straightforward radio-frequency signal service rather than power output or another specialized function.

Base

Not recorded

Socket

B8G

Heater

13 V

Sections

1

Pentode

High-slope Brimar RF pentode designed for wide-band television RF, IF, and video-frequency amplifier service. Its defining role is broadband television signal amplification across multiple receiver stages.

Base

Not recorded

Socket

B8G

Heater

6.3 V

Sections

1

Pentode

8D8 voltage - pentode electronic tube specifications and datasheets.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Philips directly heated subminiature transmitting pentode designed for radiosondes. It can operate as a pentode or triode-connected oscillator around 30 MHz, combining compact RF transmission with specialized airborne meteorological service.

Base

Subminiature

Socket

SUBMINIATURE6

Heater

1.25 V

Sections

1

Pentode

Frame-grid dual-control pentode for color-television chroma bandpass, color demodulation, and video amplification with exceptionally high transconductance.

Base

Not recorded

Socket

B9A

Heater

8.7 V

Sections

1

Pentode

A3064_GEC voltage - pentode electronic tube specifications and datasheets.

Base

Not recorded

Socket

Not recorded

Heater

6.3 V

Sections

1

Pentode

Mazda screened pentode developed specifically for noise suppression and automatic-tuning control circuits in AC mains radio receivers.

Base

Not recorded

Socket

M7A

Heater

4 V

Sections

1

Pentode

Special low-noise, low-microphony version of the Mazda ACSP3 high-slope RF pentode for sensitive receiver and low-level amplifier stages.

Base

Not recorded

Socket

M7A

Heater

4 V

Sections

1

Pentode

Early Philips power pentode for output-amplifier service, combining approximately 3 W plate dissipation with a low-current 4 V heater.

Base

Not recorded

Socket

Not recorded

Heater

4 V

Sections

1

Pentode

Philips output pentode closely related to B443, providing approximately 3 W plate dissipation for early audio power-amplifier service.

Base

035

Socket

Not recorded

Heater

4 V

Sections

1

Pentode

Low-voltage directly heated power pentode for battery-operated radio and audio output service, using a 2 V, 200 mA filament.

Base

Not recorded

Socket

Not recorded

Heater

2 V

Sections

1

Pentode

Professional long-life wideband pentode with approximately 14 mA/V transconductance and a guaranteed service life around 10,000 hours.

Base

Not recorded

Socket

B8G

Heater

6.3 V

Sections

1

Pentode

Professional universal long-life pentode for series or parallel heater operation, with approximately 10,000-hour guaranteed service life.

Base

Loctal

Socket

B8G

Heater

20 V

Sections

1

Pentode

Long-life professional pentode developed for both RF and audio-frequency amplification in continuously operated equipment.

Base

Not recorded

Socket

B8G

Heater

6.3 V

Sections

1