This product is the YXC Yangxing YSX1610SK series ultra-compact SMD passive quartz crystal resonator, featuring SMD1610 two-pin packaging with dimensions of 1.6×1.0×0.5mm. Nominal frequency is 32.768KHz, with G-code corresponding to a load capacitance of 12.5pF, frequency tolerance of ±20ppm at 25°C, industrial-grade operating temperature range of -40℃ to +85℃, and maximum ESR of 90kΩ. Its ultra-thin miniature metal-ceramic structure is compatible with SMT automated mounting, packaged in original standard carrier tape reels, and complies with RoHS environmental standards. Primarily used in RTC real-time clocks, wearable devices, portable compact digital devices, low-power MCU timing circuits, and other scenarios requiring precise low-frequency timing references.