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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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7457 vacuum tube outline illustration

Tube-number record

7457

0 archive entries

7457 is a tube type in the TubeDatabase archive (class: Beam Power Tube). Recorded specifications: brand RCA, year 1965, construction Beam tetrode / beam power, base Ceramic-Metal, socket Coaxial, maximum plate voltage 1000 V, and maximum plate dissipation 115 W. The archive does not yet hold a photographed example of this type.

BrandRCA
ClassBeam Power Tube
BaseCoaxial
Filament6.3 V @ 3200 mA

Construction

Primary TypeBeam tetrode / beam power
EnvelopeCeramic-metal seals
Base MaterialCeramic-Metal
Sections1

Filament / Heater

Heater NotesMatrix-Type, Oxide-Coated, Unipotential Cathode

Absolute Maximum Ratings

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
AF Power Amplifier Class AB1 (2 tubes)850 V—700018200 mA
RF Power Amplifier Class C Telegraphy (1215 Mc/s)900 V——18170 mA

Application Notes

For use at frequencies up to 2000 Mc/s under severe shock and vibration. Forced-air cooling is required to limit radiator core to 250 degrees C.

Filters

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Manufacturers

Brands

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    Plate Voltage1000 V
    Plate Dissipation115 W
    Grid 2 Voltage300 V
    Grid 1 Voltage-100 V
    Cathode Current180 mA

    Audio Performance

    Power Output85 W
    Key Features
    • Ceramic-metal seals
    • Coaxial-electrode structure
    • Integral radiator
    • One-piece electrode design
    • Shock and vibration resistant