The ECS-2520Q AECQ from ECS Inc. International is a General Crystal Oscillator with Frequency 750 kHz to 60 MHz, Supply Voltage 1.8 to 3.3 V, Current 2.5 to 8.5 mA, Load Capacitance 15 pF, Duty Cycle 45 to 55 %. Tags: Surface Mount. More details for ECS-2520Q AECQ can be seen below.