Ruggedized platforms often operate in the most hostile environments. Aerospace and defense systems can be exposed to extreme temperatures or large magnitude shock and vibration events. Reliable operation under such harsh conditions couldn’t be more important, and in some circumstances could make the difference between mission success or mission failure. State-of-the-art MEMS timing technology has come of age. Because MEMS-based timing products now exceed the performance of traditional quartz oscillators in many performance categories, it is ideally suited to meet the challenges of aerospace and defense.