6385
3 Tubes in archive
BrandBendix
ClassDouble Triode
BaseMiniature button 9-pin
Filament6.3V @ 0.5mA
Construction
Primary TypeDouble Triode
EnvelopeT-6 1/2
Sections2
Filament / Heater
MaterialCoil type heater inside extruded alumina insulator
Warm-up Time25s
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation1.5 W
Grid 1 Voltage-100 V
Cathode Current25 mA
H-C Voltage300 V
Audio Performance
Key Features
- Reliable miniature double triode
- Long average service life
- Uniform operating characteristics
- Coil type heater
- Shock and vibration resistant
- Low noise
- Low microphonic effects
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Average Electrical Characteristics | 150V | 5000 | - | 35 | 8mA |
Application Notes
Specifically designed for aircraft and industrial applications where freedom from early failure and long service life are important. Intended to replace 2C51 or 5670. Maximum frequency range is approximately 500 Mc as an oscillator.
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