ACT HC49U (Standard) Quartz Crystal Resonators - ACT 4.0MHZ HC49/U 30 30, This 4MHz quartz crystal resonator is of the standard HC49U type. The wire-ended component has a build-quality and specification that makes it ideal for use in industrial applications. ACT 4.0MHz HC49/U 30 30 4.0MHz Hc-49/u Crystal
