The SMAJ28CA is a 45.4V 31.1V 28V Bi-Directional SMA TVS ROHS manufactured by MSKSEMI. It is a surface-mount chip-style protection device designed to provide overvoltage protection for portable electronics. The device is designed to protect against electrical transients, including surges, spikes, and electrostatic discharges. The device has a low capacitance (1.7pF) and a low-leakage current. It is compliant with various international standards, including RoHS, MSL, and REACH. The device is RoHS-compliant, meaning that it contains few or no hazardous materials and does not pose a threat to the environment when disposed of properly.