DF60
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BrandMullard
ClassRF Pentode
BaseB5G/F
Construction
Primary TypePentode
EnvelopeSubminiature
SectionsSingle
Filament / Heater
MaterialDirectly heated
Absolute Maximum Ratings
Plate Voltage90 V
Grid 2 Voltage67.5 V
Cathode Current4 mA
Audio Performance
Key Features
- Subminiature
- Sharp cut-off
- Battery-operated
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Class A Amplifier (Set 1) | 45V | 820 | 1200000 | - | 0.8mA |
| Class A Amplifier (Set 2) | 67.5V | 1100 | 1000000 | - | 1.8mA |
Application Notes
Suitable for d.c. operation only. Direct soldered connections to the leads must be at least 5mm from the seal.
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