The XTAL2520AL from Dynamic Engineers is a RF Quartz Crystal with Frequency 12 to 54 MHz, Frequency Stability ±10 to ±30 ppm, Frequency Tolerance ±10 to ±30 ppm, Drive Power Level 1 to 200 uW, Load Capacitance 8 pF, 10 pF, 12 pF. Tags: Surface Mount. More details for XTAL2520AL can be seen below.