The ECS-.327-12.5-13X is a 32.768 kHz tuning fork crystal designed for precision timing and clock source applications in communication equipment, measuring instruments, microprocessors, and portable devices. This crystal features a load capacitance of 12.5 pF, frequency tolerance of ±20 ppm, and a maximum series resistance of 35 kO, with a typical Q-factor of 70,000 for excellent frequency stability. The device operates over a temperature range of -10°C to +60°C with a temperature coefficient of -0.040 ppm/°C maximum and turnover temperature at +25°C ±5°C, ensuring reliable performance across varying environmental conditions. With a maximum drive level of 1 µW and low power consumption, this crystal is ideal for battery-powered and portable equipment requiring stable, long-term frequency accuracy with minimal power draw.