The XO2520S-ET-3 from Dynamic Engineers is a General Crystal Oscillator with Frequency 1.25 to 100 MHz, Supply Voltage 3.3 V, Output_Voltage 0.33 to 2.97 V, Frequency Stability ±50 ppm, Operating Temperature -40 to 125 Degree C. Tags: Surface Mount. More details for XO2520S-ET-3 can be seen below.