This is a CAP CER 27PF 1KV C0G/NP0 1210 ceramic capacitor. It has a capacitance value of 27 picofarads with ±1% tolerance and can withstand a voltage of up to 1000 volts (1 kilovolt). The capacitor uses the C0G or NP0 dielectric material, commonly known as NPO in some countries, and has a case size of 1210 (3225 metric), indicating its physical dimensions.