The ECS-1618-120-BN-TR from ECS Inc. International is a General Crystal Oscillator with Frequency 12 MHz, Supply Voltage 1.8 V, Current 2.5 mA, Frequency Stability ±50 ppm, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount. More details for ECS-1618-120-BN-TR can be seen below.