The part number is 1206J1K20153KXR, which corresponds to a CAP CER 0.015UF 1.2KV X7R 1206 ceramic capacitor with the following specifications: a capacitance value of 0.015 microfarads (µF), a voltage rating of 1200 volts (1.2kV) and a metric size of 3216, which is equivalent to the 1206 (3216 Metric) package size. This type of capacitor falls under the X7R category, indicating its temperature coefficient characteristics. It has an accuracy tolerance of ±10% and is designed for applications requiring high reliability and stability in ceramic capacitors.