Tube-number record
9EN7
0 archive entries
9EN7 is a tube type in the TubeDatabase archive (class: Triode Pentode). Recorded specifications: brand Ediswan Mazda, construction Multi-section, socket Noval (B9A), maximum plate voltage 250 V, and maximum plate dissipation 1.7 W. The archive does not yet hold a photographed example of this type.
BrandEdiswan Mazda
ClassTriode Pentode
BaseNoval (B9A)
Filament9 V @ 0.3 mA
Construction
Primary TypeMulti-section
EnvelopeGlass
Sections2
Filament / Heater
Heater NotesIndirectly Heated
Absolute Maximum Ratings
Plate Voltage250 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode | 170 V | 8500 | — | — | 10 mA |
| Triode | 100 V | 3900 | — | 20 | 6 mA |
| Frequency Changer (Pentode section) | 164 V | 2300 | — | — | 7.6 mA |
Application Notes
Basing arranged to minimize pentode cathode lead inductance effects.
Datasheets
Datasheet: 9EN7.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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