General characteristics:
Filament voltage, Volt 	5
Filament (heater) current, A 	5±0.75
Anode current (at UA=75V), mA 	no less than 300
Rectified current

(UA=500V, RH=1 kOhm, C=4 mkF) , mA
	no less than 400
Operation time, h 	no less than 1000

Limited operating values:
Filament voltage, V 	4.5 to 5.5
Reverse power, V 	1700
Rectified current (average value), mA 	420
Anode current (amplitude), mA 	1.200

Operating environmental conditions :
Acceleration of vibration loads, g 	2,5
by frequencies, Hz 	50
Ambient temperature, °Ñ 	-60 to +70
Relative humidity at up to 40°C, % 	98