ABM12W-33.3333MHZ-7-B1U-T3 is an IoT-optimized low-profile quartz crystal designed for energy-saving wearables and IoT applications. The device features a compact 1.6 × 1.2 × 0.4 mm form factor with exceptionally low plating capacitance as low as 4 pF and optimized equivalent series resistance (ESR), making it ideal for height-constrained designs. Operating over a temperature range of -40°C to +85°C with ±10 ppm frequency stability, the crystal is seam-sealed for long-term reliability and RoHS/RoHS II compliant. This crystal is well-suited for Bluetooth/BLE modules, wireless connectivity, ultra-low power microcontrollers, NFC applications, and ISM band devices where compact size and low power consumption are critical requirements.