This EPSON AMERICA part FA-118T27.1200MD50Z-K3 is a high-quality crystal oscillator featuring a frequency of 27.1200MHz with a tolerance of +/-30PPM at room temperature and +/-50PPM over the operating temperature range of -20 to 75 degrees Celsius. It has a capacitance of 10.0pF and comes in a 250TR package, making it a reliable and precise component for various electronic applications.