EBF89
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ClassDouble Diode - Remote-cutoff Pentode
BaseNoval
Filament6.3V @ 0.3mA
Construction
Primary TypeDouble Diode Pentode
EnvelopeGlass
Base MaterialGlass
Sections3
Filament / Heater
Heater NotesIndirectly heated
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2.25 W
Grid 2 Voltage300 V
Grid 1 Voltage-1.3 V
Cathode Current16.5 mA
H-C Voltage100 V
Audio Performance
Key Features
- Remote-cutoff characteristic
- Combined AM/FM detector and IF amplifier
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section | 250V | 4500 | 900000 | 20 | 9mA |
Application Notes
Commonly used in radio receivers for IF amplification and detection.
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