The XTAL1210AL from Dynamic Engineers is a RF Quartz Crystal with Frequency 36 to 54 MHz, Frequency Stability ±15 to ±30 ppm, Frequency Tolerance ±15 to ±30 ppm, Drive Power Level 1 to 100 uW, Load Capacitance 8 pF, 10 pF. Tags: Surface Mount. More details for XTAL1210AL can be seen below.