The IQXC-228 AUTO from IQD Frequency Products is a RF Quartz Crystal with Frequency 10 to 70 MHz, Frequency Stability ±15 to ±100 ppm, Frequency Tolerance ±10 to ±50 ppm, Drive Power Level 50 µW, Load Capacitance 8 to 75 pF. Tags: Ceramic. More details for IQXC-228 AUTO can be seen below.