Rectifier - Damper Diode ·Rectifier
12B3
Canadian Westinghouse 12B3 indirectly heated television horizontal-deflection damper diode with 12.6 V 0.6 A heater, 4400 V peak inverse voltage and cathode top cap.
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- 9
- Nominal heater
- 12.6 V / 600 mA
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- 9
- Nominal heater voltage
- 12.6 V
- Nominal heater current
- 600 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
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
- 4400 V
- Rectifier peak forward current
- 750 mA
- Rectifier forward voltage drop
- 32 V
- Rectifier warm-up time
- 11 s
Canadian Westinghouse 12B3 TV horizontal-deflection damper diode. PIV 4400 V; steady-state peak plate current 750 mA, transient peak 3 A; maximum DC plate current 150 mA (not nominal rectifier output). Forward voltage drop 32 V at 250 mA. Heater-cathode voltage is polarity and waveform dependent, so no unconditional scalar promoted: heater positive +100 V DC or +300 V combined DC+peak; heater negative 900 V DC or 4400 V combined DC+peak. Heater warm-up 11 s. Capacitances H-K 2.7 pF, plate-to-cathode/heater 5.3 pF.
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.