DF64
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ClassPentode
BaseB5A/F
Construction
Primary TypePentode
EnvelopeSubminiature
SectionsSingle
Filament / Heater
MaterialDirectly Heated
Absolute Maximum Ratings
Plate Voltage45 V
Grid 2 Voltage45 V
Cathode Current0.075 mA
Audio Performance
Key Features
- Subminiature A.F. voltage amplifying pentode
- Suitable for use in hearing aids
- Primary intended for use with battery supply
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Characteristics | 15V | 90 | 1200000 | 7.5 | 0.05mA |
Application Notes
Direct soldered connections to the leads of this valve must be at least 5mm from the seal and any bending of the valve leads must be at least 1.5mm from the seal.
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