Tube-number record
6BF11
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BrandGeneral Electric
ClassCompactron Dissimilar Double Pentode
BaseCompactron
Filament6.3 V @ 1200 mA
Construction
Primary TypePentode
EnvelopeT-9, Glass
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesAC or DC
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation4.5 W
Grid 2 Voltage145 V
Cathode Current50 mA
H-C Voltage200 V
Audio Performance
Typical THD10%
Power Output2.1 W
Key Features
- Compactron design
- Low hum
- Dual-control pentode section
- Power pentode section
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Section 1 - Class A1 Amplifier | 145 V | 8600 | 30000 | — | 30 mA |
Application Notes
Intended for use as an FM detector (Section 2) and audio output amplifier (Section 1) in television receivers. High dynamic plate resistance in Section 1 minimizes hum currents.
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