The SMBJ85CA is a Transient Voltage Suppressor (TVS) diode made by Liown. It is a bi-directional device with a DO-214AA package and has RoHS (Restriction of Hazardous Substances) compliance. The specified breakdown voltages for this diode are 137V, 94.4V, and 85V. The SMBJ85CA can be used for transient voltage protection in a variety of applications such as power supplies, data lines, automotive modules, mobile phones, and more. It is specifically designed to protect against lightning strikes, power surges, and other electrical occurrences that could damage sensitive electronic components.