The CAP CER 390PF 500V C0G/NP0 0805 is a ceramic capacitor with specific characteristics. It has a capacitance of 390 picofarads and operates at 500 volts with a tolerance of ±5%. The capacitor uses the C0G or NP0 dielectric material, which is known for its stability across temperature changes. Its compact 0805 package size makes it suitable for various applications where space is limited.