The SMBJ250CA with TVS SMB RoHS is an electronic device manufactured by Yenji. It is a surface-mount transient voltage suppressor diode designed to protect sensitive electronic components from voltage spikes. The RoHS designation indicates that this product is compliant with Restriction of Hazardous Substances (RoHS) regulations, meaning that it uses materials free from lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, and polybrominated diphenyl ether. This device is rated to support transients up to 250V, with a peak pulse power of 600W. It is suitable for use in a variety of applications, including automotive, consumer electronics, and telecommunications systems.