The part number is CAP CER 5.6PF 2KV C0G/NP0 1808 for a specific ceramic capacitor. This device features a capacitance of 5.6 pF with a tolerance of ±0.5pF and can withstand voltages up to 2000V (2kV). It falls under the classification of C0G/NP0, also known as Type 1B in metric measurements, and has an 1808 case size equivalent to 4520 in metric dimensions.