Tube-number record
3Z4
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BrandTHE FEDERATION OF JAPAN ELECTRIC COMMUNICATION INDUSTRIAL ASSOCIATIONS
ClassPower Amplifier Pentode
BaseMiniature 7-pin (B7G)
Construction
Primary TypePentode
EnvelopeT-5 1/4
Sections1
Filament / Heater
MaterialCoated
Absolute Maximum Ratings
Plate Voltage90 V
Grid 2 Voltage67.5 V
Cathode Current6 mA
Audio Performance
Typical THD12%
Power Output0.21 W
Key Features
- Miniature
- Directly Heated Cathode
- Battery Operated
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Power Amplifier | 67.5 V | 1450 | 100000 | — | 6.5 mA |
Application Notes
JETEC release #1822, Jan. 7, 1957
Datasheets
Datasheet: 3Z4.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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