The SM15T18CA is a high-speed diode from STMicroelectronics for use in a wide range of applications, including automotive, consumer electronics, and industrial. It is a low-cost, high-efficiency solution that helps protect against voltage, current, temperature and ESD spikes. It has an average forward current rating of 15A with a peak surge of 42A, and a reverse voltage rating of 800V. It has a low forward voltage drop of 0.7V and a maximum thermal resistance of 2.2°C/W. The SM15T18CA features an industry-standard SMC package for easy, reliable mounting.