DL 71
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BrandPHILIPS
ClassOutput Pentode
BaseWire Leads
Construction
Primary TypePentode
EnvelopeSubminiature
SectionsSingle
Filament / Heater
MaterialDirectly Heated
Absolute Maximum Ratings
Plate Voltage45 V
Plate Dissipation0.03 W
Grid 2 Voltage45 V
Grid 1 Voltage0.2 V
Cathode Current0.75 mA
Audio Performance
Power Output0.003 W
Key Features
- Subminiature design for hearing aids
- Low filament current
- Direct heating
- Available with 6mm wire leads
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical Operation 1 | 30V | 220 | 450000 | - | 0.54mA |
| Typical Operation 2 | 22.5V | 220 | 450000 | - | 0.26mA |
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