Capacitors K73-11 metal film polyethylene terephthalate.
They are produced in cylindrical cases wrapped with adhesive tape and filled with epoxy compound at the ends with unidirectional leads.
Designed to operate in DC, AC, pulsating current circuits and in pulse modes.

Main technical parameters of capacitors K73-11:
   - Range of nominal capacitances ....... 0.001... 100 µF;
   - Rated voltage ....... 50; 63; 100; 160; 250; 400; 630; 1000; 1600 V;
   - Permissible deviations of capacity .......±5; ±10; ±20%;
   - Loss angle tangent, no more than ....... 0.012;
   - Lead-to-pin insulation resistance, not less than ....... 12000 MOhm;
   - Time constant in normal climatic conditions, not less than ....... 4000 MOhm x µF;
   - Relative air humidity at a temperature of +35 °C ....... 98%;
   - Temperature range ....... -60... +125 °C;
   - Minimum operating time, not less than ....... 15,000 hours;