.The SMF22CA is a TVS (transient voltage suppressor) diode in an SOD-123FL surface mount package, manufactured by Jingdao. The diode has a peak pulse power rating of 35.5V 24.4V 22V and is RoHS compliant. It is primarily used in various electronic circuits in order to suppress transients and voltage spikes due to electrostatic discharge, load switching, and lightning. The diode is also suitable for protecting sensitive electronic components such as power MOSFETs, SCRs, diodes, and circuit boards and is commonly used in automotive, industrial, and consumer electronic applications.