The part number is CAP CER 39PF 50V 0805 EPOXY. This refers to a specific type of ceramic capacitor with the following characteristics: it has a capacitance value of 39 pF and operates within a voltage range of ±10 50V. The capacitor is encapsulated in epoxy and adheres to the C0G (NP0) specifications, which indicates its stability and precision. It also comes in an 0805 (2012 Metric) package size.