8533
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BrandEIMAC
ClassPlanar Triode
BaseCoaxial, special
Filament6.3V @ 1.3mA
Construction
Primary TypeTriode
EnvelopeMetal-Ceramic
Base MaterialMetal-Ceramic
Sections1
Filament / Heater
Heater NotesIndirectly heated oxide coated cathode
Absolute Maximum Ratings
Plate Voltage8000 V
Plate Dissipation100 W
Grid 1 Voltage-150 V
Cathode Current150 mA
Audio Performance
Key Features
- Matrix cathode
- Arc resistant
- Extended grid-to-anode insulator
- Compact metal and ceramic coaxial construction
- High transconductance
- Forced air cooling
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| General Class | 1000V | 30000 | - | 145 | 160mA |
Application Notes
The EIMAC Type 8533 is a planar triode designed for use as a grid- or plate-pulsed oscillator, amplifier, frequency multiplier, or switch tube at high plate voltages. The tube will operate from low frequencies up to 3.0 GHz.
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