Tube-number record

U.404

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BrandMazda

ClassHalf Wave Rectifier

BaseSpecial / none

Filament40 V @ 100 mA

Construction

Primary TypeVacuum Tube

Rectifier TypeHalf-wave

EnvelopeClear

Sections1

Heater NotesIndirectly heated — for series operation

Plate Voltage250 V

Cathode Current99 mA

H-C Voltage550 V

Key Features

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
70mA load current	230 V	—	—	—	70 mA
90mA load current	230 V	—	—	—	90 mA

The 'Internal Connexion' pins are used for mechanical rigidity and must not be connected to the circuit.

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