Tube-number record
ECH11
0 archive entries
ECH11 is a tube type in the TubeDatabase archive (class: Triode-Hexode). Recorded specifications: brand Philips, construction Multi-section, socket Side-contact (P-base), maximum plate voltage 300 V, and maximum plate dissipation 1.3 W. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassTriode-Hexode
BaseSide-contact (P-base)
Filament6.3 V @ 240 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesIndirect heating; parallel or series supply
Absolute Maximum Ratings
Plate Voltage300 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Hexode section | 250 V | 640 | 1000000 | — | 2.2 mA |
| Hexode section (low plate voltage) | 100 V | 470 | 1000000 | — | 0.75 mA |
| Triode section (oscillator) | 250 V | — | — | — | 3.4 mA |
Application Notes
Screen grid supply through a potentiometer recommended for optimal stability.
Datasheets
Datasheet: ECH11.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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