NOS double triode from russian production, military specs (-EV = longer life >5.000h and better mechanical stability), good for NF (e.g. in tubes mirophones), also very good for low voltage projects. Compares to EF95.
Pinout: 1=g1, 2=K+g3, 3=H, 4=H, 5=A, 6=g2, 7=K+g3
Typical operating values:
Filament 6,3V/0,175A, Ua=120V, Ug1=-1,5V, Ug2=120V, Ug3=0V, Ia=7,5mA, Ig2=3mA, S=5,2mA/V, Ri=300KOhm
Maximal operating values:
Ua=120V, Ug2=120V, Pa=1,2W, Pg2=0,4W, Ik=13mA, Ukh=90V, Rg1=1MOhm