Tube-number record
40 P.P.A.
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BrandCossor
ClassOutput Pentode
Filament40 V @ 200 mA
Construction
Primary TypePentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly heated cathode; designed for series running in A.C./D.C. or D.C. receivers.
Absolute Maximum Ratings
Plate Voltage150 V
Plate Dissipation8 W
Grid 2 Voltage150 V
Audio Performance
Key Features
- Indirectly heated
- Low frequency pentode
- Series running
- Domestic use
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A | 150 V | 4000 | — | — | 36 mA |
Application Notes
Undistorted output adequate for domestic uses. Designed for maximum anode and screen voltage of 150V as higher voltages are generally unavailable in the target receiver types. Screen voltage should never exceed anode voltage.
Datasheets
Datasheet: 40PPA.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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