Tube-number record
7358
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BrandRCA
ClassBeam Power Tube
BaseOctal
Filament6.3 V @ 1250 mA
Construction
Primary TypeBeam tetrode / beam power
EnvelopeT12
Base MaterialMicanol
Sections1
Filament / Heater
Heater NotesUnipotential Cathode
Absolute Maximum Ratings
Plate Voltage3000 V
Grid 2 Voltage500 V
Grid 1 Voltage300 V
H-C Voltage135 V
Audio Performance
Key Features
- Severe Shock and Vibration Resistant
- 500-g Shock Tested
- Fatigue Tested
- Pulse-Modulator Service
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Static Characteristics | 200 V | 7000 | — | 4.5 | 100 mA |
| Rectangular-Wave Modulation | 3000 V | — | — | — | 1500 mA |
Application Notes
For tube protection, it is essential that sufficient resistance be used in the plate, grid-No.2, and grid-No.1 supply circuits so that short-circuit current is limited to 0.5 ampere in each circuit.
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