The SMF28CA with 45.4V 31.1V 28V SOD-123 TVS ROHS is a semiconductor device manufactured by AnBon. It is a unidirectional, low voltage, low capacitance, transient voltage suppressor (TVS) designed for signal line and multiport lightning protection. This device is RoHS compliant and has three voltage levels: 45.4V, 31.1V, and 28V. It features a SOD-123 package for mounting on the circuit board and has a low series resistance of = 18O. This device can be used to protect sensitive components from overvoltage transients on signal lines, such as ESD, EFT, and lightning surge failures.