MC-30632.7680K-A0:ROHS is a 32.768 kHz fundamental crystal unit designed for clock and microcomputer timing applications. It features a nominal frequency of 32.768 kHz with a frequency tolerance of ±20 × 10?4 (±50 × 10?6 at +25°C with 0.1 µW drive level), operating over a temperature range of -40°C to +85°C with a storage range of -55°C to +125°C. The unit has a maximum drive level of 1.0 µW, motional resistance (ESR) of 50 kO maximum, and a load capacitance of 6 pF to 8 (standard 12.5 pF). With external dimensions of 8.0 × 3.8 × 2.54 mm and RoHS compliance, this crystal is ideal for precision timekeeping in consumer electronics, microcontroller-based systems, and real-time clock applications where reliable frequency stability and low power consumption are essential.