The AB308 from Abracon LLC is a RF Quartz Crystal with Frequency 4 to 40 MHz/ 40.001 to 70 MHz, Frequency Stability ±50 ppm, Frequency Tolerance ±30 ppm, ± 50 ppm, Drive Power Level 100 uW, Load Capacitance 16 pF. Tags: Thru Hole. More details for AB308 can be seen below.