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Tube Database (7,341 tube types · 1,270 archive entries)

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864 vacuum tube outline illustration

Tube-number record

864

0 archive entries

864 is a tube type in the TubeDatabase archive (class: Triode). Recorded specifications: construction Triode, socket 4-pin, and maximum plate voltage 135 V. The archive does not yet hold a photographed example of this type.

ClassTriode
Base4-pin

Construction

Primary TypeTriode
EnvelopeST-12
Sections1

Filament / Heater

Absolute Maximum Ratings

Plate Voltage135 V

Audio Performance

Key Features
  • Low microphonic
  • Battery-operated

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A Amplifier90 V425155006.62.5 mA

Application Notes

The 864 is a general-purpose triode designed for use as a detector or amplifier in applications where low microphonic response is essential.

Datasheets

Datasheet: 864.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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