Tube-number record

4BN4

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BrandBrimar

Classminiature medium-mu triode

BaseMiniature 7-pin (B7G)

Filament4.2 V @ 450 mA

Construction

Primary TypeTriode

EnvelopeT-5 1/2

Sections1

Filament / Heater

Heater NotesA.C. or D.C.

Absolute Maximum Ratings

Plate Voltage250 V

Plate Dissipation2 W

Cathode Current20 mA

H-C Voltage100 V

Audio Performance

Key Features

Coated unipotential cathode
Medium-mu triode
RF amplifier for VHF TV tuners

Typical Operation

Mode	Plate V	Gm (µmhos)	Rp (Ω)	µ	Plate mA
Class A1 Amplifier	150 V	6800	6300	43	9 mA

Application Notes

Intended primarily for use as a radio frequency amplifier in VHF television tuners. Electrical characteristics are similar to those of each section of the 6BZ7.

Datasheets

Datasheet: 4BN4.pdf

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Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.

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