The CAP CER 1.9PF 250V C0G/NP0 0805 is a type of ceramic capacitor with specific characteristics. It has a capacitance value of 1.9 picofarads and a tolerance of ±0.5 picofarads, with a working voltage of 250 volts. The C0G or NP0 designation indicates that it belongs to the C0G/NP0 class of ceramic capacitors, which are known for their stability and temperature characteristics.