Tube-number record
9EN7
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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
Plate Dissipation1.7 W
Grid 2 Voltage175 V
Cathode Current14 mA
H-C Voltage200 V
Audio Performance
Key Features
- Indirectly Heated
- AC/DC Mains Television Receivers
- V.H.F. Frequency Changer
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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