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

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12DP7 vacuum tube outline illustration

Tube-number record

12DP7

0 archive entries

12DP7 is a tube type in the TubeDatabase archive (class: Cathode Ray Tube). Recorded specifications: brand RMA, construction Display / CRT, base Wafer Octal 8-Pin, Sleeve, socket Octal, and maximum plate voltage 7700 V. The archive does not yet hold a photographed example of this type.

BrandRMA
ClassCathode Ray Tube
BaseOctal
Filament6.3 V @ 600 mA

Construction

Primary TypeDisplay / CRT
EnvelopeGlass
Base MaterialWafer Octal 8-Pin, Sleeve
SectionsSingle

Filament / Heater

Heater NotesDC or AC

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical Operation7000 V———1 mA

Application Notes

Brilliance and definition decrease with decreasing anode voltage. In general, anode voltage should not be less than 4000 volts.

Datasheets

Datasheet: 12DP7.pdf

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

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    H-C Voltage125 V

    Audio Performance

    Key Features
    • Magnetic focusing
    • Magnetic deflection
    • Long persistence phosphor
    • Large bulb size