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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

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Class A1 Amplifier90V11000-2810mA
Oscillator at 960 Mc135V---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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