ABM12W-27.0000MHZ-7-D1X-T3 is an IoT-optimized low-profile quartz crystal designed for energy-saving wearables and wireless applications. The device operates at a fundamental frequency of 27.0000 MHz with a 7 pF load capacitance, featuring an exceptionally compact form factor of 1.6 × 1.2 × 0.4 mm that is ideally suited for height-constrained designs. It delivers a frequency tolerance of ±10 ppm at +25°C with frequency stability of ±10 ppm over the operating temperature range of -40°C to +125°C, and provides an equivalent series resistance (ESR) of less than 80 O at the 27 MHz frequency point. The crystal is seam-sealed for long-term reliability and features low plating capacitance with optimized ESR characteristics. This component is widely used in Bluetooth/BLE modules, wireless connectivity devices, ultra-low power microcontrollers, and IoT applications requiring compact, reliable timing solutions.