The XTAL7500AL-12.8MHz-A from Dynamic Engineers is a RF Quartz Crystal with Frequency 12.8 MHz, Frequency Stability ±10 ppm, Frequency Tolerance ±10 ppm, Drive Power Level 100 uW, Load Capacitance 8 pF. Tags: Surface Mount. More details for XTAL7500AL-12.8MHz-A can be seen below.