Description

8 PCS 6K4P 6К4П (6BA6, EF93) LIGHTLY USED VACUUM TUBE USSR HF PENTODE BUY WHAT YOU SEE ON PHOTO We can do combine shipping 6К4П: Filament voltage 6.3 V The anode voltage of 250V Second grid voltage 100V Filament current 300±30mA 300±25mA Anode current 10±3mA Second grid current <5.5 mA The steepness of the characteristics 4.4±0.9 mA/V The steepness of the characteristics at UN=5,7 V >2.8 mA/V >3.0 mA/V The steepness at the beginning of the characteristic (Uc1=-20V) 0.04 mA/V First grid reverse current <1.0 µa <0.3 µa The cut-off voltage of the electronic current of the first mesh < -1.5 V Resistance in the cathode circuit for automatic displacement of 68 ohms Internal resistance of about 850Ком about 450Ком Input impedance (at f=60MHz) type. 19kom >2kom (type. 5kω) Voltage fibrosum (Ra=10kOhm) <400mV <180мВ Input capacitance 6pf 6.4±0.8 pF The output capacitance of 6.3 pF 6,7±1,1 pF Internal capacitance <0,0045 pF <pF 0,0035 Capacitance cathode-heater is a 5.5 pF to 5.5 pF Operating time 1000h 5000h