Tube-number record
ECH 42
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ECH 42 is a tube type in the TubeDatabase archive (class: Triode-Hexode Frequency Changer). Recorded specifications: brand Philips, construction Multi-section, socket Rimlock, maximum plate voltage 300 V, and maximum plate dissipation 1.5 W. The archive does not yet hold a photographed example of this type.
BrandPhilips
ClassTriode-Hexode Frequency Changer
BaseRimlock
Filament6.3 V @ 230 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesIndirect heating; Parallel supply
Absolute Maximum Ratings
Plate Voltage300 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Hexode section as frequency changer | 250 V | 750 | 1000000 | — | 3 mA |
| Triode section | 100 V | 2800 | — | 22 | 10 mA |
| Triode section as oscillator | 250 V | 600 | — | — | 5.1 mA |
Datasheets
Datasheet: ECH42.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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