8877/3CX1500A7
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BrandEIMAC
ClassPower Triode
BaseSpecial 7-pin
Filament5V @ 10.5mA
Construction
Primary TypeTriode
EnvelopeCeramic/Metal
Base MaterialMetal/Ceramic
Sections1
Filament / Heater
MaterialOxide Coated
Warm-up Time90s
Heater NotesUnipotential cathode
Absolute Maximum Ratings
Plate Voltage4000 V
Plate Dissipation1500 W
Cathode Current1000 mA
Audio Performance
Power Output2075 W
Key Features
- Rugged ceramic/metal construction
- High-mu power triode
- Cathode driven
- Low intermodulation characteristics
- UHF band capable
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| RF Linear Amplifier Class AB2 Cathode Driven | 2700V | 55000 | - | 200 | 740mA |
| RF Linear Amplifier Class AB2 Cathode Driven (High Voltage) | 3500V | 55000 | - | 200 | 1000mA |
| Class AB2 Cathode Driven 220 MHz | 2500V | - | - | - | 1000mA |
| Class B Cathode Driven 88-108 MHz | 4000V | - | - | - | 1000mA |
Application Notes
Designed for use as a cathode driven Class AB2 or Class B amplifier in audio or RF applications, or as a cathode driven plate modulated Class C RF amplifier.
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