The SMF30A with SOD-123F TVS ROHS is a RoHS-compliant Transient Voltage Suppressor (TVS) manufactured by FOSAN. It is a bi-directional, fast-response, ESD protection device used to protect high-frequency circuits and active devices such as serial buses and radio frequency modules, from electrostatic discharge (ESD) and surge transients. This device is packaged in a SOD123F package that measures 2.95 x 1.4 mm and has an operating temperature range from -55 to +125 °C. It features a maximum peak power of 1.2 W, a working voltage of 30 V, a clamping voltage of 44.4 V, a low clamping factor of 8.5 mA, and a capacitance of 145 pF.