Tube-number record
7035/4X150D
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BrandRCA
ClassBeam Power Tube
BaseSpecial / none
Filament26.5 V @ 580 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeMetal-Ceramic with Integral Radiator
Base MaterialCoaxial-Electrode Structure
SectionsSingle
Filament / Heater
MaterialOxide-coated unipotential
Warm-up Time30s
Heater NotesHeater voltage should be reduced depending on operating conditions and frequency to prevent overheating the cathode due to back bombardment.
Absolute Maximum Ratings
Plate Voltage1000 V
Plate Dissipation250 W
Grid 2 Voltage300 V
Cathode Current250 mA
Audio Performance
Key Features
- Forced-air cooled
- Coaxial-electrode structure
- Compact design
- Integral radiator
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| DC Plate Current Adjustment | 1000 V | — | — | — | 150 mA |
| RF Power Amplifier at 475 Mc | 1000 V | — | — | — | 200 mA |
Application Notes
Heater voltage must be applied for at least 30 seconds before application of other voltages. Minimum leakage resistance measured with 500-volt Megger-type ohmmeter.
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