6EH8
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BrandGeneral Electric
ClassTriode-Pentode
Base9-Pin Miniature
Filament6.3V @ 0.45mA
Construction
Primary TypeTriode-Pentode
EnvelopeT-6 1/2 Glass
Base MaterialGlass
Sections2
Filament / Heater
MaterialCoated Unipotential
Warm-up Time11s
Heater NotesControlled heater-warm-up characteristic
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2.8 W
Grid 2 Voltage300 V
H-C Voltage200 V
Audio Performance
Key Features
- Sharp-cutoff pentode
- Controlled heater warm-up
- Miniature tube
- VHF Converter
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section | 100V | 6500 | - | - | 12mA |
| Pentode Section | 125V | 6000 | - | - | - |
| Triode Section | 125V | 7500 | 170000 | 40 | 13.5mA |
Application Notes
Intended primarily for use as a combined triode oscillator and pentode mixer in television receivers.
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