VFOV400 Series OCXOs are the industry's smallest (TO-8), lowest power (typ. 120mW), and fastest warm-up (<35 sec.) OCXOs available. The VFOV400 Series OCXOs are designed to resist extreme vibration due to its 4-point crystal mount and is ideal for guidance systems and man-pack radio applications. The VFOV400 is available from 5MHz to 250MHz and 0.5ppb stability.