The 32.768K-3/8-SR is a type of passive component known as a surface mount ceramic resonator. It has a frequency of 32.768 kHz ± 30ppm (Parts Per Million) and is designed to provide a stable reference frequency source for timing and synchronization of electronics circuitry. The component features an 8-pin, 3/8th inch rectangular flat package and typically has a high vibration and -40 to +85 degree Celsius operating temperature range. It is made from a ceramic material that offers superior electrical performance, thermal stability, low temperature coefficient and long-term stability. The component is ideal for use in clocks, digital timing circuits, frequency control systems and real-time clocks.