6DY4A
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BrandSYLVANIA
ClassReceiving Tube
BaseMiniature Button 7-Pin
Filament6.3V @ 125mA
Construction
Primary TypeTriode
EnvelopeT-5 1/2
Base MaterialGlass
SectionsSingle
Filament / Heater
MaterialCoated Unipotential
Heater NotesParallel operation
Absolute Maximum Ratings
Plate Voltage135 V
Plate Dissipation1.5 W
Grid 1 Voltage-50 V
Cathode Current20 mA
H-C Voltage50 V
Audio Performance
Key Features
- Strap frame grid
- High efficiency
- High Gm
- Medium mu
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Amplifier | 90V | 11000 | - | 28 | 10mA |
| Oscillator at 960 Mc | 135V | - | - | - | 11.5mA |
Application Notes
Intended for VHF oscillator service. High figure of merit (Gm x mu) permits oscillation at low plate power.
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