The HC49 from IQD Frequency Products is a RF Quartz Crystal with Frequency 1.8432 to 270 MHz, Frequency Stability ±5 to ±200 ppm, Frequency Tolerance ±5 to ±100 ppm, Drive Power Level 1 mW, Load Capacitance 10 to 75 pF. Tags: Thru Hole. More details for HC49 can be seen below.