1W5
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BrandSylvania
ClassRF Pentode
BaseTinned Leads
Construction
Primary TypeSharp Cut-Off Pentode
EnvelopeGlass
SectionsSingle
Filament / Heater
Absolute Maximum Ratings
Plate Voltage100 V
Grid 2 Voltage100 V
Audio Performance
Key Features
- Sharp cut-off
- Subminiature size
- Light weight
- Directly solderable tinned leads
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Connection - Low Voltage | 30V | 430 | 700000 | - | 0.42mA |
| Pentode Connection - Standard Voltage | 67.5V | 735 | 700000 | - | 1.85mA |
Application Notes
Designed for use in very small sets or amplifiers. Corresponds in service and circuit design to Type 1LN5. When used on battery supply, filament voltage must never exceed 1.5 volts. For AC-DC power line operation, the design center is 1.2 volts.
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