Tube-number record
DAF 41
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BrandPhilips
ClassDiode-Pentode
BaseRimlock
Construction
Primary TypePentode
EnvelopeGlass
SectionsDiode-Pentode
Filament / Heater
MaterialDirectly heated
Absolute Maximum Ratings
Plate Voltage135 V
Plate Dissipation0.1 W
Grid 2 Voltage85 V
Grid 1 Voltage-0.2 V
Cathode Current0.5 mA
Audio Performance
Key Features
- Direct heating
- Series or parallel supply
- Microphonic resistant
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Resistance coupled A.F. amplifier | 67.5 V | — | — | 60 | 0.17 mA |
| Resistance coupled A.F. amplifier | 90 V | — | — | 70 | 0.25 mA |
| Resistance coupled A.F. amplifier | 90 V | — | — | 83 |
Application Notes
Used in battery receivers. Input voltage Vi >= 18 mV for an output of 50 mW without special microphonic precautions.
Datasheets
Datasheet: DAF41.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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