Rectifier - Half Wave ·Rectifier
6B21
Lewis Electronics 6B21 directly heated tungsten-filament high-vacuum half-wave rectifier rated 100 kV peak inverse voltage, 300 mA peak current and 100 mA average current.
- Sections
- 1
- Base
- 4AU
- Socket code
- -
- Base pins
- 4
- Nominal heater
- 5 V / 24 A
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 4AU
- Socket code
- -
- Base pins
- 4
- Nominal heater voltage
- 5 V
- Nominal heater current
- 24 A
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
4AU - Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
1 physical section, each with unique specifications.
Section 1
Rectifier
- Rectifier peak inverse voltage
- 100000 V
- Rectifier nominal output current
- 100 mA
- Rectifier peak forward current
- 300 mA
- Rectifier forward voltage drop
- 400 V
- Rectifier warm-up time
- 30 s
Lewis Electronics 6B21 high-vacuum half-wave rectifier, RMA 1946. Directly heated tungsten filament 5 V AC 24 A, preheat >=30 s. Maximum PIV 100000 V, peak plate/forward current 0.3 A, average plate current 0.1 A. Forward tube drop 400 V at 100 mA. Interelectrode capacitance 2.5 pF. Natural convection cooling, max ambient 60 °C. Basing 4AU, A4-29 jumbo ceramic bayonet 4-pin; anode on pins 2 and 3, filament pins 1 and 4.
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.