Low profile quartz crystals through hole hc 49us ansen quartz as49s 768m fe200f3 a 7680000mhz through hole quartz crystal with a plusmn30ppm tolerance that has excellent frequency aging stability and high shock and heat resistance the device is suitable for a wide range of applications such as computers tablets laptops commnications devices etc 768mhz 30ppm hc 49us low profile crystal