Tube-number record
WL-881
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BrandWestinghouse
ClassMercury Vapor Rectifier
Filament5 V @ 9500 mA
Construction
Primary TypeDiode
Rectifier TypeMercury Vapor
EnvelopeGlass
SectionsSingle
Filament / Heater
Heater NotesIndirectly Heated Type (Unipotential Cathode)
Absolute Maximum Ratings
Plate Voltage15000 V
Cathode Current5000 mA
Audio Performance
Key Features
- Indirectly Heated Type
- Uni-potential cathode
- Advanced design for high power delivery
- Forced air or natural cooling options
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Single-phase full-wave (Natural Cooling) | 3540 V | — | — | — | 10000 mA |
| Single-phase full-wave (Forced Air Cooling) | 5300 V | — | — | — | 10000 mA |
Application Notes
The anode return should be made to the cathode pin adjacent to the letter 'C' stamped on the edge of the base. Sufficient preheating time to bring the tube within the required operating temperature range is always necessary. Condensed mercury temperature should be within 30-60C for natural cooling or 30-40C for forced air cooling.
Datasheets
Datasheet: WL-881.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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