This is a 1200pF ±2% 2.5KV ceramic capacitor with the designation of CER 1200PF 2.5KV C0G 2220 and has a tolerance of ±2%. The capacitance value is 1200 pF, and it operates at a voltage rating of 2500V (or 2.5kV). It belongs to the C0G type, also known as NP0 or Class 1B, in metric size 2220 (also referred to as 5750) and has the marking CER 1200PF 2.5KV C0G 2220.