866 JR.
0 Tubes in archive
BrandHytron
ClassRectifier
BaseMedium 4-pin Bayonet
Construction
Primary TypeHalf-wave
Rectifier TypeMercury Vapor
EnvelopeST-16
Base MaterialMetal
SectionsSingle
Filament / Heater
MaterialCoated
Warm-up Time30s
Absolute Maximum Ratings
Plate Voltage1250 V
Cathode Current125 mA
Audio Performance
Key Features
- Hot-cathode
- Mercury-vapor
- High-voltage supply
- Half-wave
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Single-phase full-wave (2 tubes) - Choke Input | 1250V | - | - | - | 250mA |
| Single-phase full-wave (2 tubes) - Condenser Input | 1250V | - | - | - | 200mA |
Application Notes
Tube must be operated in a vertical position with the base down. Filament voltage must be maintained within 5% of 2.5V. A 30-second delay is required before applying plate voltage. Initial use requires 15 minutes of filament operation without plate voltage to distribute mercury.
Datasheet Viewer
Loading datasheet...
Sort by
Showing 1 to 0 of 0 results