DL620
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BrandMullard
ClassSubminiature Output Pentode
BaseB5G/F
Construction
Primary TypePentode
EnvelopeSubminiature
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage90 V
Grid 2 Voltage90 V
Cathode Current5 mA
Audio Performance
Typical THD10%
Power Output0.11 W
Key Features
- Subminiature
- Direct current operation
- Battery operation
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Single Valve Class A (Condition 1) | 45V | - | - | - | 1.8mA |
| Single Valve Class A (Condition 2) | 67.5V | 650 | 110000 | 5 | 3.25mA |
| Single Valve Class A (Condition 3) | 90V | - | - | - | 3.25mA |
| Push-Pull Class AB | 67.5V | - | - | - | 3.3mA |
Application Notes
Direct soldered connections to the leads must be at least 5mm from the seal. Any bending of the valve leads must be at least 1.5mm from the seal.
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