The CX4HT EXT from IQD Frequency Products is a RF Quartz Crystal with Frequency 600 kHz to 2.5 MHz, Frequency Tolerance ±500 to ±10, 000 ppm, Drive Power Level 3 µW, Load Capacitance 9 pF, Shunt Capacitance 2 pF. Tags: Surface Mount. More details for CX4HT EXT can be seen below.