Low profile quartz crystals through hole hc 49us ansen quartz as49s 4194304m fe200f3 a 4194300mhz 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 4194304mhz 30ppm hc 49us low profile crystal