Electronic tube and vacuum tube catalog

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Type 12 appears in the supplied source, but the matching electrical entry is not reproduced clearly enough to establish construction or function without guessing.

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Type 3A6 appears in the supplied receiving-tube handbook, but its row is not legible enough to establish a reliable construction or application.

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B7G

Electrical Summary

Heater	6.3 V / 150 mA

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B7G - Miniature 7-contact

Type 5610 remains functionally unresolved from the available approved source material; no narrower classification is assigned without readable application evidence.

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B12A

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B12A - Duodecal 12-contact

Type 8346 remains functionally unresolved from the available approved source material; no narrower classification is assigned without readable application evidence.

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Heater	6.3 V

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ASG657 remains a special-purpose device whose available source does not support a more specific functional classification without inference.

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B40M1 remains functionally unresolved from the available approved source material and is conservatively retained as an unspecified special-purpose device.

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CEM75 is documented as a special-purpose electron tube, but the available source does not expose enough application detail for a narrower evidence-based classification.

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CH1027-family Curpistor constant-current regulator rated at approximately 10^-10 ampere, intended to maintain an extremely small controlled current.

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CH1027-family Curpistor constant-current regulator for specialized precision electronic circuits, with its specific current value defined by the type suffix.

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2 pins

CH1027-family Curpistor constant-current regulator for precision low-current service, providing a defined current largely independent of applied voltage.

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2 pins

CH1027-family Curpistor constant-current regulator intended for specialized precision circuits requiring a stable predetermined current.

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Raytheon subminiature special-purpose tube whose construction and application columns are blank or damaged in the available handbook source.

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Raytheon subminiature special-purpose tube whose target handbook row is not legible enough to establish a reliable functional classification.

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CK5697 remains functionally unresolved from the available approved source material; no narrower classification is assigned without explicit application evidence.

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CVS1 is documented as a special-purpose electron tube, but the available source does not provide enough clear application detail for a narrower classification.

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Heater	6.3 V

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CY2253 is documented as a special-purpose electronic tube, but the available evidence does not support a narrower functional assignment without inference.

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Heater	1.4 V / 50 mA
Plate	S2: 25 V
Screen	S2: 15 V

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Battery diode-heptode with space-charge grid designed for audio-frequency amplification and detection in low-consumption portable receiving equipment.

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Refer to variations

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RCA DR2000 Numatron segmented incandescent numeric display, nominal 4.5 V and 24 mA per segment; non-electron-beam display device.

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B5

Electrical Summary

Heater	4 V / 1.2 A

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B5 - European 5-pin base

Philips E448 remains functionally unresolved from the available datasheet summary; a narrower classification is not assigned without explicit application evidence.

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One-shot evaporation ion pump incorporating a Bayard-Alpert gauge and zirconium getter filament, providing both vacuum pumping and independent pressure measurement.

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Microwave tube represented primarily by a mechanical-drawing sheet; the supplied scan does not provide legible electrical performance data for a narrower functional classification.

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General Electric special-purpose industrial vacuum device whose available source does not support a more specific functional assignment without guessing.

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Heater	20 V / 100 mA
Plate	15 V / 0.04 W
Ik max	1.5 mA
gm	0.1 mA/V

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Indirectly heated rectifier for power-supply service. Its 20 V low-current heater suits series strings, while available manufacturer data do not support a narrower specialization.

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Heater	24 V / 125 mA

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Compact selective digital indicator with green display and a 24 V, 125 mA heater, intended for discrete visual information display rather than receiver tuning.

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Heater	24 V / 125 mA

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Compact selective digital indicator with orange display and a 24 V, 125 mA heater, intended for discrete visual information display rather than receiver tuning.

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Philips cross-reference designation for microwave tube 4C35; available source establishes microwave service but not enough detail here for a narrower functional category.

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OCTAL

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IO

Electrical Summary

Heater	6.3 V / 950 mA
Plate	650 V
V Drop	10 V
V Inverse	1,300 V

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8 pins - IO - International Octal

PL6574 is documented as a special-purpose electronic tube, but the available source summary does not establish a narrower function reliably.

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Heater	6.3 V / 950 mA
Plate	1,300 V
Ik max	2 A

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S132IV is documented as a special-purpose electronic tube; available source material does not support a more specific classification without inference.

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Single-stage electrostatically focused ultraviolet image-converter tube that transforms ultraviolet images into bright visible images for scientific and astrophysical applications.

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Single-stage electrostatically focused visible and near-infrared image intensifier with fast electronic gating for night-vision and synchronized optical-imaging applications.

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Rugged three-stage electrostatically focused image intensifier with automatic brightness control, fiber-optic windows, and integral high-voltage supply for military night vision.

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B7G

Electrical Summary

Heater	34 mA

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7 pins - B7G - Miniature 7-contact

Bendix Chronotron thermal time-delay resistance device, using controlled heating and resistance change to provide a predetermined electrical timing delay.

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B8G

Electrical Summary

Heater	45 V / 100 mA
Plate	S2: 250 V
Screen	S2: 250 V
rP	S2: 70,000 Ω
gm	S2: 6.5 mA/V

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B8G - Loctal 8-contact

Tetrode-output pentode combination designed for detector and audio-output service, integrating radio signal detection with loudspeaker-driving power amplification.

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VGIA1 is documented as a special-purpose electron tube, but the available source does not expose enough functional detail for a narrower evidence-based classification.

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Magnoval, gold plated pins

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B9E

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B9E - Novar 9-contact

Evacuated vibrating-membrane capacitor used as a DC-to-AC converter in electrometers, dosimeters, pH meters, and other very-high-input-resistance instruments. Its membrane resonates around 5.3–6.3 kHz, enabling modulation of extremely small DC measurement signals.