Tube-number record
4GZ5
0 archive entries
4GZ5 is a tube type in the TubeDatabase archive (class: Power Pentode). Recorded specifications: brand TUNG-SOL, year 1962, construction Pentode, base Glass, socket Miniature 7-pin (B7G), maximum plate voltage 300 V, and maximum plate dissipation 4.8 W. The archive does not yet hold a photographed example of this type.
BrandTUNG-SOL
ClassPower Pentode
BaseMiniature 7-pin (B7G)
Filament4 V @ 600 mA
Construction
Primary TypePentode
EnvelopeT-5 1/2
Base MaterialGlass
SectionsSingle
Filament / Heater
MaterialCoated Unipotential
Warm-up Time11s
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Audio Amplifier | 250 V | 8400 | 15000000 | — | 18 mA |
| Class A1 Audio Amplifier (Secondary) | 290 V | 8400 | 15000000 | — | 16 mA |
Application Notes
Intended for audio output stage of radio and television receivers.
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