Tube-number record
RX21A
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BrandEimac
ClassHalf-wave mercury vapor rectifier
Base5-pin
Construction
Primary TypeRectifier
Rectifier TypeMercury Vapor
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialCoated, shielded ribbon
Warm-up Time30s
Absolute Maximum Ratings
Plate Voltage11000 V
Cathode Current750 mA
Audio Performance
Key Features
- Shielded ribbon filament
- Edgewise-wound
- Large emission reserve
- Long life
- Low applied voltage conduction
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rectifier | 15 V | — | — | — | 750 mA |
Application Notes
The RX21A must be mounted vertically, base down. Adequate air circulation is required. Condensed mercury temperature should be maintained at 40 degrees plus or minus 5 degrees C. R-f filtering and shielding may be necessary in high-frequency fields.
Datasheets
Datasheet: RX21A.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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