The CX4V TF from IQD Frequency Products is a RF Quartz Crystal with Frequency 30 to 250 KHz, Frequency Tolerance ±30 to ±10, 000 ppm, Drive Power Level 0.5 µW, Load Capacitance 4 to 11 pF, Shunt Capacitance 0.7 pF. Tags: Surface Mount, Ceramic. More details for CX4V TF can be seen below.