Electronic tube and vacuum tube catalog

Base

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Socket code

B10B

Electrical Summary

Heater	15 V / 150 mA
Plate	S1: 250 V / 2 WS2: 250 V / 2 W
Screen	S1: 180 V / 0.5 WS2: 180 V / 0.5 W
Ik max	S1: 20 mAS2: 20 mA
rP	S1: 110,000 ΩS2: 110,000 Ω
gm	S1: 10 mA/VS2: 10 mA/V

Sections

2

10 pins - B10B - Decal 10-contact

Twin tetrode designed for VHF RF amplification and autodyne mixer service, a heater-variant member of a television/radio front-end converter family.

Base

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Socket code

B10B

Electrical Summary

Heater	16.8 V / 150 mA
Plate	S1: 250 V / 2 WS2: 250 V / 2 W
Screen	S1: 180 V / 0.5 WS2: 180 V / 0.5 W
Ik max	S1: 20 mAS2: 20 mA
rP	S1: 110,000 ΩS2: 110,000 Ω
gm	S1: 10 mA/VS2: 10 mA/V

Sections

2

10 pins - B10B - Decal 10-contact

Twin tetrode designed for VHF RF amplification and autodyne mixer service, a heater-variant member of a television/radio front-end converter family.

Base

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Socket code

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Electrical Summary

Heater	2 V / 55 mA
μ	S1: 1.3S2: 1.3

Sections

2

Directly heated dual electrometric tetrode for low-current measuring devices.

Base

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Socket code

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Electrical Summary

Heater	6.3 V / 400 mA
Plate	S1: 250 V / 3 WS2: 250 V / 3 W
Screen	S1: 165 V / 1.5 WS2: 165 V / 1.5 W
rP	S1: 60,000 ΩS2: 60,000 Ω
gm	S1: 5.8 mA/VS2: 5.8 mA/V

Sections

2

Base

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Socket code

SUBMINIATURE8

Electrical Summary

Heater	1.25 V / 200 mA
Plate	S1: 150 V / 0.96 WS2: 150 V / 0.96 W
Screen	S1: 50 VS2: 50 V
Ik max	S1: 15 mAS2: 15 mA
gm	S1: 1.7 mA/VS2: 1.7 mA/V

Sections

2

8 pins - SUBMINIATURE8 - Subminiature 8-lead base

Directly heated subminiature double tetrode designed for push-pull Class-C RF power-amplifier service at VHF frequencies.

Base

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Socket code

B9A

Electrical Summary

Heater	3 V / 50 mA
Plate	S1: 9 VS2: 9 V
gm	S1: 0.02 mA/VS2: 0.02 mA/V

Sections

2

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

Directly heated dual space-charge tetrode electrometer tube designed for highly stable bridge circuits measuring extremely small currents and voltages.

Base

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Socket code

B9A

Electrical Summary

Heater	6.3 V / 600 mA
Plate	S1: 250 V / 5.5 WS2: 250 V / 5.5 W
Screen	S1: 200 V / 1.5 WS2: 200 V / 1.5 W
Ik max	S1: 40 mAS2: 40 mA
μ	S1: 31S2: 31

Sections

2

B9A - Small-button Noval 9-contact

Miniature frame-grid twin tetrode designed for compact RF power equipment, with useful output and full-input operation extending to approximately 400 MHz.

Base

8BV

Socket code

LOCTAL8

Electrical Summary

Heater	7 V / 320 mA
Plate	S1: 300 V / 1.5 WS2: 300 V / 1.5 W
Screen	S1: 100 V / 0.1 WS2: 100 V / 0.1 W
rP	S1: 225,000 ΩS2: 225,000 Ω
gm	S1: 2.1 mA/VS2: 2.1 mA/V

Sections

2

8 pins - LOCTAL8 - Loctal 8-contact base

Sharp-cutoff double tetrode with common cathode and screen, intended for general amplifier service.

Base

Refer to variations

Socket code

Refer to variations

Electrical Summary

Heater	11 V / 3.1 A
Plate	S1: 300 V / 4 WS2: 300 V / 4 W
Screen	S1: 200 V / 2.5 WS2: 200 V / 2.5 W
Ik max	S1: 45 mAS2: 45 mA
gm	S1: 7 mA/VS2: 7 mA/V
μ	S1: 26S2: 26

Sections

2

9 pins

Quick-heating internally neutralized twin tetrode designed for RF power amplification and frequency multiplication in mobile or fixed equipment to approximately 500 MHz.

Base

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Socket code

B9A

Electrical Summary

Heater	6.75 V / 760 mA
gm	S1: 3.3 mA/VS2: 3.3 mA/V
μ	S1: 7.5S2: 7.5

Sections

2

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

Twin tetrode designed for Class-C RF amplifier, oscillator, frequency-multiplier, and modulator service to approximately 200 MHz.

Base

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Socket code

B9A

Electrical Summary

Heater	6.75 V / 760 mA
Plate	S1: 450 V / 10 WS2: 450 V / 10 W
Screen	S1: 200 V / 1 WS2: 200 V / 1 W
Ik max	S1: 110 mA

Sections

2

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

Single-ended twin tetrode designed for mobile Class-C RF amplification, oscillation, and frequency multiplication to approximately 200 MHz.

Base

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Socket code

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Electrical Summary

-

Sections

2

Raytheon subminiature double tetrode designed for RF power-amplifier service, providing two power sections for compact transmitting equipment.

Base

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Socket code

—

Electrical Summary

Heater	1.25 V / 10 mA

Sections

2

Directly heated subminiature double tetrode designed for electrometer service, with nominal control-grid current around 10^-14 ampere.

Base

8CB

Socket code

—

Electrical Summary

Heater	1.25 V / 200 mA
Plate	S1: 135 VS2: 135 V
Screen	S1: 45 VS2: 45 V
gm	S1: 1.7 mA/VS2: 1.7 mA/V

Sections

2

8 pins

Directly heated subminiature twin tetrode designed for RF power-amplifier service in compact electronic equipment.

Base

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Socket code

—

Electrical Summary

Heater	2 V
gm	S1: 0.03 mA/VS2: 0.03 mA/V

Sections

2

Double electrometer tetrode designed for precision measurement of extremely small electrical currents and voltages.

Base

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Socket code

SIDE8

Electrical Summary

Heater	75 mA

Sections

2

8 pins - SIDE8 - European side-contact 8-contact base

Russian dual tetrode documented in technical reference literature; available source does not clearly establish a narrower specialized functional role.

Base

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Socket code

—

Electrical Summary

Heater	12.6 V / 1.1 A
Plate	S1: 4,000 VS2: 4,000 V
Screen	S1: 800 VS2: 800 V
Ik max	S1: 15 A

Sections

2

Russian double tetrode designed for pulse modulators in RF equipment, with high peak-current capability in each power section.

Base

Refer to variations

Socket code

B9A

Electrical Summary

Heater	6.3 V / 600 mA
Plate	S1: 250 VS2: 250 V
Screen	S1: 200 VS2: 200 V
gm	S1: 10.5 mA/VS2: 10.5 mA/V
μ	S1: 31S2: 31

Sections

2

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

Internally neutralized double tetrode designed for RF amplification, oscillation, and frequency multiplication.

Base

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Socket code

—

Electrical Summary

Heater	12.6 V / 650 mA
Plate	S1: 600 VS2: 600 V
gm	S1: 2.5 mA/VS2: 2.5 mA/V

Sections

2

Radiation-cooled dual transmitting tetrode designed for frequency multiplication and audio-frequency amplification, explicitly equivalent to SRS4452 and 6252.

Base

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Socket code

B7A

Electrical Summary

Heater	6.3 V / 1.8 A
Plate	S1: 600 VS2: 600 V
Screen	S1: 300 VS2: 300 V

Sections

2

B7A - Septar 7-contact

Internally neutralized double tetrode designed for HF amplification, oscillation, frequency multiplication, and modulation.

Base

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Socket code

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Electrical Summary

Heater	6.3 V / 600 mA
Plate	S1: 250 V / 3 WS2: 250 V / 3 W
Screen	S1: 200 V / 1.5 WS2: 200 V / 1.5 W
Ik max	S1: 45 mAS2: 45 mA
gm	S1: 10.5 mA/VS2: 10.5 mA/V

Sections

2

RF power double tetrode designed for amplification or frequency multiplication to approximately 500 MHz.

Base

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Socket code

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Electrical Summary

Heater	12.6 V / 1.2 A
Plate	S1: 15 WS2: 15 W
gm	S1: 8.5 mA/VS2: 8.5 mA/V

Sections

2

Double tetrode pulse modulator designed for approximately 5 kV and 10 A pulsed service in high-power electronic equipment.

Base

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Socket code

—

Electrical Summary

Heater	6.3 V
gm	S1: 4.5 mA/VS2: 4.5 mA/V

Sections

2

Radiation-cooled internally neutralized double tetrode designed for HF amplification, oscillation, modulation, frequency multiplication, and pulse-modulator service.

Base

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Socket code

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Electrical Summary

Heater	12.6 V / 650 mA

Sections

2

Siemens dual transmitting tetrode documented for high-frequency power service; available source does not clearly establish a narrower application subset.

Base

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Socket code

B9A

Electrical Summary

gm	S1: 3.3 mA/VS2: 3.3 mA/V

Sections

2

B9A - Small-button Noval 9-contact

Radiation-cooled internally neutralized double tetrode designed for HF amplification, oscillation, modulation, and frequency multiplication.

Base

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Socket code

—

Electrical Summary

Heater	12.6 V / 1.8 A
Plate	S1: 8,000 V / 15 WS2: 8,000 V / 15 W
Screen	S1: 950 V / 3 WS2: 950 V / 3 W

Sections

2

Radiation-cooled dual transmitting tetrode designed for pulse modulation and magnetron keying, capable of controlling approximately 40 kW in pulsed service.

Base

Refer to variations

Socket code

B9A

Electrical Summary

Heater	11 V / 3.1 A
Plate	S1: 300 V / 4 WS2: 300 V / 4 W
gm	S1: 7 mA/VS2: 7 mA/V

Sections

2

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

Quick-heating internally neutralized twin tetrode designed for intermittent mobile RF power-amplifier and frequency-multiplier service; co-designated YL1130/8408.