Electronic tube and vacuum tube catalog

Base

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Socket code

SMALL5

Electrical Summary

Heater	10 V / 5 A
Plate	2,000 V / 125 W
gm	1.4 mA/V

Sections

1

5 pins - SMALL5 - Small 5-contact transmitting-tube base

Power pentode designed primarily for Class-C radio-frequency transmitting, amplifier, oscillator, or modulated RF service.

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Socket code

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Electrical Summary

Heater	10 V / 10 A
Plate	4,000 V / 350 W
Ik max	500 mA
gm	12 mA/V

Sections

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Western Electric directly heated air-cooled transmitting pentode designed for Class-C RF service. Its filamentary cathode and RF operating ratings identify it as a radio-frequency power tube.

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Socket code

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Electrical Summary

Heater	6.3 V / 3.5 A
Plate	2,200 V / 1,000 W
Screen	400 V / 0.3 W
Ik max	600 mA
rP	2,200,000 Ω
gm	2.3 mA/V
μ	12

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1

Liquid-cooled high-power pentode for UHF television transmitting service, rated around 1 kW plate dissipation and approximately 300 W output at 890 MHz.

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Electrical Summary

Plate	1,500 V / 120 W

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Naturally air-cooled NEC pentode for RF power amplification, grid-modulated transmitters, and AF modulator service.

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Socket code

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Electrical Summary

Heater	10 V / 10.2 A
Plate	4,000 V / 500 W
Screen	600 V / 35 W

Sections

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Eimac high-power pentode for RF and linear-amplifier service, rated for approximately 500 W plate dissipation and 4 kV plate voltage.

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Socket code

LARGE4BAYONET

Electrical Summary

Heater	10 V / 12.5 A
Plate	3,000 V / 450 W
Screen	850 V / 100 W
Ik max	700 mA
gm	4.5 mA/V

Sections

1

4 pins - LARGE4BAYONET - Large 4-contact bayonet base

Power/output pentode designed for audio, broadband, telephone, industrial, or general power-amplifier service.

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Socket code

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Electrical Summary

Heater	10 V / 12.5 A
Plate	3,000 V / 450 W
Screen	850 V / 100 W
gm	4.5 mA/V

Sections

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Standard Valves 5C/450A directly heated thoriated-tungsten RF transmitting pentode for high-power Class C amplification and suppressor-grid modulation, rated 3000 V anode and 450 W dissipation.

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Socket code

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Electrical Summary

Heater	5 V / 38.5 A
Plate	5,000 V / 1,500 W
Screen	750 V / 75 W

Sections

1

Power pentode designed for radio-frequency transmitting, Class-C power amplification, oscillation, or frequency-multiplier service.

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Socket code

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Electrical Summary

Heater	5 V / 38.5 A
Plate	5,000 V / 1,500 W
Screen	750 V / 75 W

Sections

1

Power pentode designed for radio-frequency transmitting, Class-C power amplification, oscillation, or frequency-multiplier service.

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Socket code

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Electrical Summary

Heater	5 V / 38.5 A
Plate	5,000 V / 1,500 W
Screen	750 V / 75 W
gm	24 mA/V

Sections

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Electrical Summary

Heater	5 V / 61.5 A
Plate	7,000 V / 4,000 W
Screen	1,000 V / 175 W

Sections

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Power pentode designed for radio-frequency transmitting, Class-C power amplification, oscillation, or frequency-multiplier service.

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Electrical Summary

Heater	10 V / 16 A
Plate	3,000 V / 1,000 W
Screen	850 V / 250 W
gm	4.5 mA/V

Sections

1

Power pentode designed for radio-frequency transmitting, Class-C power amplification, oscillation, or frequency-multiplier service.

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Socket code

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Electrical Summary

Heater	9 V / 30 A
Plate	6,000 V / 3,500 W
Screen	1,500 V / 150 W
Ik max	1.4 A
gm	5.75 mA/V

Sections

1

Power pentode designed for radio-frequency transmitting, Class-C power amplification, oscillation, or frequency-multiplier service.

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Socket code

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Electrical Summary

Heater	10 V / 28 A
Plate	6,000 V / 3,500 W
Screen	1,500 V
gm	5 mA/V

Sections

1

Power pentode designed for radio-frequency transmitting, Class-C power amplification, oscillation, or frequency-multiplier service.

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Socket code

GIANT5

Electrical Summary

Heater	10 V / 5 A
Plate	2,000 V / 125 W
Screen	500 V
Ik max	175 mA
gm	4 mA/V

Sections

1

5 pins - GIANT5 - Giant 5-contact base

Thoriated-tungsten transmitting power pentode for RF amplification and oscillator service to approximately 20 MHz.

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Socket code

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Electrical Summary

Heater	11 V / 16 A
Plate	4,500 V / 750 W
Screen	800 V / 100 W
gm	6.5 mA/V

Sections

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Marconi transmitting pentode designed for high-frequency power amplification and oscillator service. Aligned screen and control grids support RF performance, with forced-air cooling specified at high dissipation.

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Socket code

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Electrical Summary

Heater	9 V / 30 A
Plate	6,000 V / 3,500 W
Screen	1,500 V / 150 W
Ik max	1.4 A
gm	5.75 mA/V

Sections

1

6 pins

Forced-air-cooled high-power RF pentode for multi-kilowatt transmitting, broadcast, communications, and industrial RF service.

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Socket code

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Electrical Summary

Heater	10 V / 10 A
Plate	3,000 V / 400 W
Screen	800 V / 80 W
Ik max	600 mA
gm	6.5 mA/V

Sections

1

Naturally cooled graphite-anode RF power pentode for telecommunications transmitters, rated to approximately 60 MHz and around 1 kW RF output. Designed for substantial radio-frequency transmitting power.

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Socket code

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Electrical Summary

Heater	8.3 V / 10 A
Plate	3,000 V / 500 W
Screen	650 V / 45 W

Sections

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Russian RF power pentode documented with bilingual electrical and limiting-operating data. Designed for radio-frequency power amplification or generation rather than receiving-type small-signal service.

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Socket code

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Electrical Summary

Heater	12.6 V / 3.3 A
Plate	6,500 V / 1,500 W
Screen	400 V / 32 W

Sections

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Russian metal-ceramic pentode for single-sideband and RF power amplification to approximately 75 MHz. Forced-air cooling and professional construction support substantial transmitting power.

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Socket code

GIANT7

Electrical Summary

Heater	12.6 V / 10.5 A
Plate	3,000 V / 450 W
Screen	600 V / 120 W

Sections

1

7 pins - GIANT7 - Giant 7-contact transmitting-tube base

Russian high-power pentode designed for substantial power service. Manufacturer documentation identifies it as a power-class device rather than a receiving-type signal pentode.

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Socket code

GIANT7

Electrical Summary

Heater	12.6 V / 10.5 A
Plate	3,000 V / 450 W
Screen	600 V / 120 W
gm	5.5 mA/V

Sections

1

7 pins - GIANT7 - Giant 7-contact transmitting-tube base

Medium-power transmitting pentode intended for RF power amplifiers, oscillators, and modulation stages. Its construction is optimized for professional radio-frequency generation and output service.

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Socket code

GIANT7

Electrical Summary

Heater	12.6 V / 10.5 A
Plate	3,000 V / 600 W
Screen	600 V / 120 W

Sections

1

7 pins - GIANT7 - Giant 7-contact transmitting-tube base

Russian generator pentode designed for RF power service. Manufacturer documentation identifies radio-frequency generation and power amplification as its defining function.

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Socket code

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Electrical Summary

Heater	12 V / 6.2 A
Plate	3,000 V / 600 W
gm	6 mA/V

Sections

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Philips/Valvo directly heated transmitting pentode intended for approximately kilowatt-class Class-C telegraphy output. Its high-power construction is optimized for radio-frequency transmitter final stages.

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Socket code

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Electrical Summary

Heater	12.6 V / 4 A
Plate	2,000 V / 125 W
Screen	500 V / 20 W
Ik max	250 mA
gm	4 mA/V

Sections

1

Radiation-cooled pentode designed for RF and AF power amplification and industrial service. Its power construction supports professional load-driving applications across radio and audio frequencies.

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Socket code

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Electrical Summary

Heater	12 V / 11 A
Plate	3,000 V / 420 W
gm	51 mA/V
μ	6.5

Sections

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Naturally air-cooled power pentode for RF power amplification, oscillator, modulator, and suppressor-grid-modulated service to approximately 25 MHz. Designed for versatile transmitting applications.

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Socket code

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Electrical Summary

Heater	12.6 V / 7.5 A
Plate	3,000 V / 400 W
Ik max	600 mA

Sections

1

Radiation-cooled pentode designed for RF and AF power amplification and industrial service. Its construction supports professional power-output applications across radio and audio frequencies.

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Socket code

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Electrical Summary

Heater	10 V / 5 A
Plate	2,000 V / 300 W
gm	6 mA/V

Sections

1

Philips/Valvo directly heated transmitting pentode rated for high-power Class-C telegraphy service. Its filamentary construction and power ratings suit radio-frequency transmitter output stages.

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Electrical Summary

Heater	10 V / 10 A
Plate	3,000 V / 400 W
Screen	800 V / 80 W
Ik max	600 mA
gm	6.5 mA/V

Sections

1

Naturally cooled graphite-anode RF power pentode for telecommunications transmitters, rated through approximately 60 MHz and around 1 kW RF output. Designed for substantial professional transmitting service.

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Socket code

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Electrical Summary

Heater	220 V / 80 A
Plate	12,000 V / 12,000 W
Ik max	3.5 A

Sections

1

Philips high-power transmitting pentode for radio-frequency power service. Manufacturer data provide construction, operating ratings, characteristics, and application information for transmitter output stages.

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Socket code

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Electrical Summary

Heater	220 V / 80 A
Plate	12,000 V / 15,000 W
Screen	2,000 V / 1,500 W
Ik max	11 A
gm	8 mA/V
μ	4

Sections

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Philips pentode from the PA1215 high-power family. Available manufacturer material establishes power-pentode construction but provides limited extracted application detail for this specific variant.

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Electrical Summary

Heater	220 V / 80 A
Plate	12,000 V / 12,000 W
Screen	2,000 V / 1,500 W
Ik max	11 A
gm	8 mA/V
μ	4

Sections

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Water-cooled Philips transmitting pentode designed for high-power RF amplifier and final-stage service. Its liquid-cooled construction supports substantially greater dissipation in professional transmitters.

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Socket code

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Electrical Summary

Heater	12 V / 3.35 A
Plate	2,000 V / 110 W
Screen	400 V / 25 W
Ik max	285 mA
gm	3.3 mA/V
μ	5.9

Sections

1

Directly heated thoriated-tungsten RF power pentode for HF amplification, telegraphy, telephony, and modulation. Philips industrial documentation identifies it as a versatile professional transmitting tube.

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Electrical Summary

Heater	12 V / 7.3 A
Plate	2,500 V / 250 W
Screen	500 V / 60 W
Ik max	600 mA
gm	6 mA/V
μ	6.2

Sections

1

Directly heated thoriated-tungsten RF power pentode for HF amplification, telegraphy, telephony, and modulation. Its construction supports substantial professional radio-frequency power service.

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Socket code

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Electrical Summary

Heater	12 V / 7.5 A
Plate	3,000 V / 600 W
Screen	1,000 V / 100 W
Ik max	700 mA
gm	6.5 mA/V
μ	4

Sections

1

Philips RF pentode designed for high-frequency power-amplifier service. Its industrial construction and ratings identify it as a transmitter-class output device rather than a receiving tube.

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Socket code

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Electrical Summary

Heater	12 V / 8.5 A
Plate	3,000 V / 450 W
Screen	600 V / 100 W
Ik max	700 mA
gm	6.5 mA/V
μ	3.5

Sections

1

Philips RF power pentode designed for high-frequency amplifier and oscillator service. It combines transmitter output capability with radio-frequency generation in professional equipment.

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Electrical Summary

Heater	12 V / 4 A
Plate	3,000 V / 600 W
Screen	1,000 V / 100 W
Ik max	700 mA
gm	6 mA/V
μ	4.5

Sections

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Directly heated oxide-filament transmitting pentode designed for high-power RF amplifier service. Its construction and ratings support substantial professional transmitter output.

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Socket code

B7A

Electrical Summary

Heater	6 V / 8.2 A
Plate	3,000 V / 1,000 W
Screen	750 V
gm	23 mA/V
μ	3.4

Sections

1

7 pins - B7A - Septar 7-contact

Power pentode designed for RF transmitting, linear RF amplification, oscillation, modulation, or RF/LF power-amplifier service.

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Electrical Summary

Heater	6 V / 22 A
Plate	7,500 V / 5,000 W
Screen	1,250 V
gm	44 mA/V

Sections

1

Power pentode designed for RF transmitting, linear RF amplification, oscillation, modulation, or RF/LF power-amplifier service.

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Electrical Summary

Heater	6 V / 17 A
Plate	5,000 V / 3,000 W
gm	37 mA/V

Sections

1

Power pentode designed for RF transmitting, linear RF amplification, oscillation, modulation, or RF/LF power-amplifier service.

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Socket code

B7A

Electrical Summary

Heater	6 V / 8.2 A
Plate	3,000 V / 1,000 W
Screen	750 V
gm	23 mA/V
μ	3.4

Sections

1

B7A - Septar 7-contact

Forced-air-cooled 1 kW power pentode for low-distortion linear RF and high-power amplifier service.

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Socket code

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Electrical Summary

Heater	6 V / 17 A
Plate	5,000 V / 3,000 W
gm	37 mA/V

Sections

1

Forced-air-cooled 3 kW power pentode for multi-kilowatt professional RF amplifier service.

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Socket code

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Electrical Summary

Heater	12.6 V / 1.5 A
Plate	1,500 V / 110 W
Screen	450 V / 15 W
Ik max	200 mA
gm	4 mA/V

Sections

1

RFT transmitting pentode for professional RF power amplification to approximately 50 MHz.

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Socket code

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Electrical Summary

Heater	12.6 V / 8.5 A
Plate	3,000 V / 450 W
Screen	600 V / 100 W
Ik max	600 mA
gm	5 mA/V

Sections

1

High-power RFT transmitting pentode capable of roughly 1.1 kW Class C RF output.

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Socket code

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Electrical Summary

Heater	12.6 V / 3 A
Plate	2,000 V / 120 W
Screen	450 V / 15 W
Ik max	800 mA
gm	3.5 mA/V

Sections

1

RFT transmitting pentode for professional RF amplification to approximately 50 MHz.

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Socket code

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Electrical Summary

Heater	10 V / 16.5 A
Plate	3,000 V / 700 W
Screen	600 V / 150 W
Ik max	900 mA
gm	9 mA/V

Sections

1

Kilowatt-class RFT transmitting pentode capable of approximately 1.5 kW Class C RF output.

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Socket code

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Electrical Summary

Heater	12.6 V / 2.5 A
Plate	1,500 V / 250 W
Screen	400 V / 15 W
Ik max	800 mA
rP	5,500 Ω
gm	45 mA/V

Sections

1

High-slope shadow-grid power pentode for transmitter finals, broadband/video amplifiers, audio power stages, and regulated supplies.