The CX3H from IQD Frequency Products is a RF Quartz Crystal with Frequency 18 to 600 KHz, Frequency Tolerance ±30 to ±5, 000 ppm, Drive Power Level 0.5 to 1 µW, Shunt Capacitance 1.8 pF, Operating Temperature -55 to 125 Degree C. Tags: Surface Mount, Ceramic. More details for CX3H can be seen below.