1SMB18AT3GTVS 600W 18V UNIDIRECT SMB|ON SEMICONDUCTOR|Lead free|RoHS Compliant SMBJ18A-TP SMBJ18A SMBJ18CA-13-F 1SMB18AT3GTVS ZENER UNIDIRECT 600W 18V SMB|ON SEMICONDUCTOR (VA)|Lead free|RoHS Compliant SMBJ18A SMBJ18A-TP