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TBL 2/500

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BrandPhilips
ClassU.H.F. Power Triode
BaseCoaxial

Construction

Primary TypeTriode
EnvelopeCeramic
SectionsSingle

Filament / Heater

MaterialThoriated tungsten

Absolute Maximum Ratings

Plate Voltage2700 V
Plate Dissipation500 W
Grid 1 Voltage-300 V
Cathode Current400 mA

Audio Performance

Key Features
  • Forced air cooled
  • Ceramic envelope
  • Coaxial arrangement of terminals
  • U.H.F. amplifier

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Typical Characteristics2400V14000500070240mA
Grounded grid, f=400 Mc/s2500V---380mA
Grounded grid, f=625 Mc/s2200V---380mA

Application Notes

Mounting position: vertical, with the anode up or down. Filament voltage varies by frequency: 3.4V (<600 Mc/s), 3.3V (600-750 Mc/s), 3.2V (>750 Mc/s).

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