The Raltron AS-4.000-20-SMD-TR is a 4 MHz crystal designed for surface mount applications. As an authorised distributor of Raltron components, Supreme Components International guarantees the authenticity and quality of this product. This SMD crystal offers excellent frequency stability and is suitable for a wide range of electronic devices, including microcontrollers, communication equipment, and timing circuits. Its compact size and robust construction make it easy to integrate into your designs. The AS-4.000-20-SMD-TR provides a reliable and accurate frequency source, ensuring optimal performance for your application. Trust Supreme Components International for all your Raltron component needs.