Tube-number record
E 428
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BrandPhilips
ClassTriode
BaseSpecial / none
Filament4 V @ 1000 mA
Construction
Primary TypeTriode
EnvelopeGlass
Filament / Heater
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation1.5 W
Grid 1 Voltage-1.3 V
Cathode Current15 mA
H-C Voltage50 V
Audio Performance
Key Features
- Detector
- L.F. amplification
- Oscillator
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Normal | 200 V | 2400 | 11500 | 28 | 6 mA |
Application Notes
Point de commenc. du courant de grille (Starting point of grid current) at -1.3V.
Datasheets
Datasheet: E428.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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