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Tube Database (7,341 tube types · 1,270 archive entries)

Pre (2,630 tube types), Other (2,603 tube types), Power (1,292 tube types), Rectifier (816 tube types)
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4EJ7/YF184 vacuum tube outline illustration

Tube-number record

4EJ7/YF184

0 archive entries

4EJ7/YF184 is a tube type in the TubeDatabase archive (class: Sharp cut-off pentode). Recorded specifications: brand Amperex, year 1960, construction Pentode, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 2.5 W. The archive does not yet hold a photographed example of this type.

BrandAmperex
ClassSharp cut-off pentode
BaseNoval (B9A)
Filament4.4 V @ 450 mA

Construction

Primary TypePentode
EnvelopeT6 1/2
SectionsSingle

Filament / Heater

Heater Notes450 mA controlled warm-up series string operation

Absolute Maximum Ratings

Plate Voltage250 V

Typical Operation

ModePlate VGm (µmhos)Rp (Ω)µPlate mA
IF Amplifier200 V150003500006010 mA

Application Notes

The 4EJ7/YF184 is a frame grid sharp cut-off pentode designed for use as an IF amplifier in television receivers. It should not be used in circuits with automatic gain control; a variable amplification factor tube is recommended for such applications.

Filters

0 tubes found

Manufacturers

Brands

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    Plate Dissipation2.5 W
    Grid 2 Voltage250 V
    Grid 1 Voltage50 V
    Cathode Current25 mA
    H-C Voltage150 V

    Audio Performance

    Key Features
    • Frame grid
    • Sharp cut-off
    • High transconductance
    • Low interelectrode capacitance