U19
0 Tubes in archive
BrandSFA
ClassHalf-wave Rectifier
Base4-pin
Construction
Primary TypeHalf-wave rectifier
Rectifier TypeVacuum
EnvelopeGlass
SectionsSingle
Filament / Heater
MaterialOxide coated
Warm-up Time20s
Absolute Maximum Ratings
Plate Voltage2500 V
Cathode Current250 mA
Audio Performance
Key Features
- Hard vacuum
- Directly heated filament
- Oxide coated filament
Application Notes
Recommended for output up to 500mA for a pair of valves in bi-phase circuit. For Peak Inverse Voltage exceeding 5,000V, filament should be switched on at least 20 seconds before anode voltage.
Datasheet Viewer
Loading datasheet...
Sort by
Showing 1 to 0 of 0 results