A high-capacity ceramic capacitor with the designation CAP CER 18PF 500V C0G/NP0 1808, boasting a capacitance of 18 picoFarads and an operating voltage rating of 500 Volts. This component is classified as a C0G or NP0 type, indicating its stable temperature characteristics and low loss factor. The metric size designation 4520 corresponds to the physical dimensions of this capacitor.