The IQXC-137 from IQD Frequency Products is a RF Quartz Crystal with Frequency 16.368 to 52 MHz, Frequency Stability ±10 to ±50 ppm, Frequency Tolerance ±10 to ±50 ppm, Drive Power Level 50 µW, Load Capacitance 5 to 50 pF. Tags: Surface Mount, Ceramic. More details for IQXC-137 can be seen below.