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

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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1P22 vacuum tube outline illustration

Tube-number record

1P22

0 archive entries

1P22 is a tube type in the TubeDatabase archive (class: Multiplier Phototube). Recorded specifications: brand RCA, year 1948, construction Multi-section, base Non-Hygroscopic, socket Magnal, and maximum plate voltage 1250 V. The archive does not yet hold a photographed example of this type.

BrandRCA
ClassMultiplier Phototube
BaseMagnal

Construction

Primary TypeMulti-section
EnvelopeT-9
Base MaterialNon-Hygroscopic
Sections9-stage

Filament / Heater

Absolute Maximum Ratings

Plate Voltage1250 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
100 Volts per Stage1000 V——2000000.00025 mA
75 Volts per Stage750 V——30000—

Application Notes

Especially useful in colorimetric and spectroscopic applications. Dark current due to thermionic emission may be reduced by the use of refrigerants.

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    Grid 2 Voltage250 V
    Cathode Current1 mA

    Audio Performance

    Key Features
    • 9-Stage Multiplier
    • Side-on Type
    • Opaque Cathode
    • High Sensitivity to Green-and-Blue Rich Light