4GZ5
0 Tubes in archive
BrandTUNG-SOL
ClassPower Pentode
Base7 Pin Miniature
Filament4V @ 600mA
Construction
Primary TypePentode
EnvelopeT-5 1/2
Base MaterialGlass
SectionsSingle
Filament / Heater
MaterialCoated Unipotential
Warm-up Time11s
Heater NotesDesigned for 600 mA series string circuits
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation4.8 W
Grid 2 Voltage300 V
Cathode Current30 mA
H-C Voltage200 V
Audio Performance
Typical THD10%
Power Output1.8 W
Key Features
- Coated Unipotential Cathode
- 7 Pin Miniature
- Series String Heater
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A1 Audio Amplifier | 250V | 8400 | 15000000 | - | 18mA |
| Class A1 Audio Amplifier (Secondary) | 290V | 8400 | 15000000 | - | 16mA |
Application Notes
Intended for audio output stage of radio and television receivers.
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