This is a 33pF ±10% 500V ceramic capacitor with the designation of C0G/NP0. It has a metric case size of 2828 and is identified by the code 1111, corresponding to part number CAP CER 33PF 500V C0G/NP0 1111 - 33 pF ±10 500V Ceramic Capacitor C0G, NP0 (1B) 1111 (2828 Metric).