6HB7
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BrandRCA
ClassMedium-Mu Triode—Sharp-Cutoff Pentode
Base9-Pin Miniature
Filament6.3V @ 450mA
Construction
Primary TypeTriode-Pentode
EnvelopeT6-1/2
Base MaterialSmall-Button Noval 9-Pin
Sections2
Filament / Heater
Heater NotesControlled Heater Warm-up Time; RCA Dark Heater
Absolute Maximum Ratings
Plate Voltage330 V
Plate Dissipation3.1 W
Grid 2 Voltage330 V
H-C Voltage200 V
Audio Performance
Key Features
- Dark Heater
- Controlled Warm-up Time
- Internal Shield
- High Transconductance
- Low Grid-No.1-to-plate capacitance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Triode Unit Class A1 | 150V | 8500 | 5000 | 40 | 18mA |
| Pentode Unit Class A1 | 125V | 6400 | 200000 | - | 12mA |
Application Notes
Useful as a combined oscillator-mixer tube in television receivers utilizing an intermediate frequency in the order of 40 Mc.
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