The miniature ECX-2236B is a compact SMD Crystal that offers low aging of ±1 ppm first year. The industry standard 2.5 x 2.0 x 0.55 mm ceramic package is ideal for wireless applications. ECX-2236B SMD CRYSTAL Request a Sample ECX-2236B SMD CRYSTAL Low Profile 2.5 x 2.0 mm Footprint Extended Temp. Range IOT/Wearable applications DIMENSIONS (mm) OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS PARAMETERS Frequency Mode of Oscillation Frequency Tolerance.