VP21
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BrandOsram
ClassVariable-Mu Screen Pentode
Base7-pin
Construction
Primary TypeScreen Pentode
EnvelopeMetallised bulb
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage150 V
Grid 2 Voltage60 V
Audio Performance
Key Features
- Variable mu characteristic
- Non-microphonic properties
- Metallised bulb
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Recommended Operating Condition 1 | 150V | 1100 | - | - | 2.8mA |
| Recommended Operating Condition 2 | 150V | 750 | - | - | 1.5mA |
| Recommended Operating Condition 3 | 150V | 50 | - | - | 0.08mA |
Application Notes
Primarily suitable for operation as a Detector or in Intermediate frequency Amplifier of a superheterodyne receiver.
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