K73P-3 160V 0.5uf 10% is a Russian made high quality multipurpose polyethylene-terephtalate (PETP) capacitor. Polyetilene-terephthalate based capacitors (extended foil, non-inductive) are encased in metal housing (cylindrical or rectangular). Works at circuits of AC, DC and Pulse current. Intender for use in Hi-End. Great for use them as coupling capacitor and in voice filters. Also as in RIAA corrector circuit. NEW, NOS and never used before!