Tube-number record

U319

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BrandMarconi

ClassHalf Wave Rectifier

BaseRimlock

Filament20 V @ 0.3 mA

Construction

Primary TypeRectifier

EnvelopeTubular

SectionsSingle

Filament / Heater

Heater NotesIndirectly heated

Absolute Maximum Ratings

Plate Voltage250 V

Cathode Current170 mA

H-C Voltage350 V

Audio Performance

Key Features

Any mounting position
Tubular bulb
Indirectly heated

Typical Operation

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
Single Phase Half wave, Capacitor input	250 V	—	—	—	170 mA

Application Notes

Free air circulation is preferable. If the retaining device is in the form of a canister, the surfaces should be blackened. The temperature of the hottest part of the bulb must not exceed 225°C.

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