The product code is 1210J1K50391GCR and it represents a CAP CER 390PF 1.5KV C0G/NP0 1210 ceramic capacitor with specific characteristics: 390 picofarads ±2, a voltage rating of 1500 volts (1.5 kilovolts), and is classified as C0G/NP0 material in the 1210 package size (also known as 3225 Metric).