Tube-number record
20F2
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BrandEdiswan Mazda
ClassTelevision Screened Pentode
BaseRimlock
Filament11 V @ 200 mA
Construction
Primary TypePentode
EnvelopeGlass
Base MaterialMoulded
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated—for series operation
Absolute Maximum Ratings
Plate Voltage250 V
Plate Dissipation4 W
Grid 2 Voltage250 V
H-C Voltage250 V
Audio Performance
Key Features
- Indirectly heated
- Series operation
- Replacement type
- High mutual conductance
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Screened Pentode | 140 V | 10600 | 125000 | 33 | — |
Application Notes
Mounting Position—Unrestricted. Measured with respect to the higher potential heater pin.
Datasheets
Datasheet: 20F2.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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