The ECX-L27BN-12.288 from ECS Inc. International is a General Crystal Oscillator with Frequency 12.288 MHz, Supply Voltage 2.5 V, Current 18 mA, Frequency Stability ±50 ppm, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount. More details for ECX-L27BN-12.288 can be seen below.