Tube-number record
866
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BrandHytron
ClassHalf-wave mercury-vapor rectifier
Base4-pin
Construction
Primary TypeRectifier
Rectifier TypeHalf-wave
EnvelopeST-19
SectionsSingle
Filament / Heater
MaterialCoated
Warm-up Time30s
Absolute Maximum Ratings
Plate Voltage2650 V
Cathode Current250 mA
Audio Performance
Key Features
- Hot-cathode
- Mercury vapor
- High-voltage
- Coated filament
Application Notes
Requires a 30-second filament preheating period before plate voltage is applied. For new tubes or those moved, operate filament for 15 minutes without plate voltage to distribute mercury. Should be mounted vertically with base down.
Datasheets
Datasheet: 866.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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