This is a surface mount, bi-directional, Transient Voltage Suppressor (TVS) manufactured by AnBon with RoHS compliance. It is designed to provide fast response to electrical transients on both the positive and negative sides. It is rated for 5uA at 56.3A, 53.3V,36.7V, 33V, and 40.6V. It is commonly used for the protection of circuits for various types of electronic devices such as laptops, phones, and other consumer electronics.