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50A1

0 Tubes in archive

BrandSylvania
ClassBallast Tube
BaseMiniature Button 9-Pin
FilamentV @ mA

Construction

Primary TypeGas-filled
EnvelopeT-6 1/2
Sections1

Filament / Heater

Absolute Maximum Ratings

Plate Voltage65 V
Cathode Current58 mA

Audio Performance

Key Features
  • Gas-filled ballast tube
  • Maintains relatively constant current
  • Radiation cooling
  • Miniature 9-pin base

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Average Operating Point 130V---52mA
Average Operating Point 250V---54mA
Average Operating Point 365V---56mA

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