The AB26T-32.768KHZ is a 32.768 kHz watch crystal housed in a 6.2×2.1 mm cylindrical package, designed as a standard frequency source for real-time clock and timing applications. This tuning fork crystal operates over a temperature range of -10°C to +60°C with a frequency tolerance of ±20 ppm maximum at 32.768 kHz, and features a temperature coefficient of -0.034 ± 0.006 ppm/°C for stable performance across varying conditions. Key electrical characteristics include an equivalent series resistance of 35 kO maximum, shunt capacitance of 0.8 to 1.7 pF, load capacitance of 12.5 pF typical, and a high quality factor of 70,000 typical, ensuring excellent frequency stability. The device is RoHS compliant and suitable for applications in measuring instruments, clock sources for communication equipment, and audio/video devices, with an aging rate of ±3 ppm maximum in the first year at 25°C.