The SMF78CA is a transient voltage suppressor (TVS) diode manufactured by AnBon. It has a SOD-123 package with a peak standoff voltage of 126V, an unidirectional breakdown voltage of 86.7V, a bidirectional breakdown voltage of 78V, and is RoHS compliant. It is a low power, low capacitance device designed to protect sensitive electronic components from damaging high voltage transients. It can be used in a wide range of electronic circuits, such as power supplies, communication systems, and automotive electronics.