SiTime & Apple
SiTime supplies MEMS (micro-electromechanical systems) timing oscillators used in Apple's devices for precise clock signals. These components replace traditional quartz crystals with silicon-based alternatives that offer better performance, smaller size, and higher resistance to vibration and temperature variation. Apple is a major customer for SiTime's precision timing products.
Why it matters: Precise timing is foundational to every communication system in a modern device, including Wi-Fi, Bluetooth, cellular, and USB. SiTime's MEMS oscillators offer size and reliability advantages over quartz that matter for Apple's thin-and-light design goals, particularly in Apple Watch and AirPods where space is extremely constrained.