6D20P = EY81 tube. Damping diode
The 6D20P damping diode has been designed for use in line scanning units of television receivers with up to 110°C picture tubes.
Cathode: indirectly heated, oxide-coated.
The 6D20P damping diodes are resistant to ambient temperature from -45 to +70В°C and relative humidity of 95 to 98% at +25°C, as well as to vibration with an acceleration of 2g.
All tubes new, military equipment and have "OTK" mark. Near equivalent: EY81.
The tube is manufactured by the Yantar / Amber, Vladikavkaz, Russia.
Type: damping diode
Filament voltage to, v: 6,3 ± 0,6
Heater current, A: 1,8 ± 0,15
Anode voltage opposite limit (pulse amplitude), kV: 6.5
Anode current limiting (pulse amplitude), mA: 600
Rectified current limit (average), mA: 220
The power dissipated by the anode, the maximum, W: 5
The voltage between the cathode and heater limit (amplitude pulse) at a negative potential of the heater, kv: 7
The voltage between the cathode and heater limit (continued):
at a negative potential heater, v: 750
at a positive potential heater, v: 100
Horizontal Frequency, kHz: 12
Capacitance cathode - heater, pF: 2,8 ± 0,6
Capacity anode - cathode, pF: 9 ± 1
Design: miniature glass
Weight, g: 25
All datasheets here.