The SA8.0CA is an unidirectional TVS (transient voltage suppression) diode made by Yageo. It has the listed breakdown voltage ratings of 13.6V, 8.89V, and 8V. The plugin type is a two-pin SOT-323 package. It is RoHS and UL certified. It can be used to protect sensitive circuits against transient voltage spikes caused by electrostatic discharge, lighting surges, and other sources.