The Raltron AS-4.000-18-SMD-TR is a 4 MHz crystal designed for surface mount applications. Supreme Components International is an authorised distributor of Raltron electronic components, ensuring you receive genuine and reliable parts. 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-4.000-18-SMD-TR crystal provides precise timing signals, crucial for the proper functioning of many electronic systems. Trust Raltron and Supreme Components International for your crystal needs.