The ECS-2520Q-25-270-BP-TR from ECS Inc. International is a General Crystal Oscillator with Frequency 27 MHz, Supply Voltage 2.5 V, Current 5.5 mA, Frequency Stability ±50 ppm, Operating Temperature -40 to 105 Degree C. Tags: Surface Mount. More details for ECS-2520Q-25-270-BP-TR can be seen below.