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4069-A

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BrandStandard Valves
ClassPentode
BaseAmerican Giant 5-pin

Construction

Primary Typepentode
EnvelopeGlass
SectionsSingle

Filament / Heater

MaterialThoriated tungsten

Absolute Maximum Ratings

Plate Voltage2000 V
Plate Dissipation100 W
Grid 2 Voltage400 V

Audio Performance

Key Features
  • Thoriated tungsten filament
  • Constant voltage type
  • American Giant 5-pin base

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
Constants (Gm Measurement)2000V4500---
Class B Telephony2000V---75mA
Class C Telephony - Control grid modulated2000V---85mA
Class C Telegraphy2000V---120mA

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