The CAP CER 1800PF 25V X7R 0805 is a specific type of ceramic capacitor. It has a capacitance value of 1800 picofarads with an tolerance of ±10% and can withstand voltages up to 25 volts. This component is classified as an X7R material, indicating it has a stable dielectric constant over a wide range of temperatures. The "0805" in the designation refers to its metric dimensions, with the first digit representing the width and the second digit representing the length in millimeters, making this capacitor suitable for surface mount applications, particularly relevant for designs dating back to 2012.