The XTAL49UCK-17MHz-A from Dynamic Engineers is a RF Quartz Crystal with Frequency 17 MHz, Frequency Tolerance ±10 ppm, Load Capacitance 30 pF, Shunt Capacitance 7 pF, Equivalent Series Resistance 20 Ohms. Tags: Thru Hole. More details for XTAL49UCK-17MHz-A can be seen below.