P6SMB120AT3TVS ZENER UNIDIR 600W 120V SMB|ON SEMICONDUCTOR|Lead All|RoHS Mixed P6SMB120AT3G P6SMB120AT3GTVS ZENER UNIDIR 600W 120V SMB|ON SEMICONDUCTOR|Lead free|RoHS Compliant P6SMB120A P6SMB120A-E3/5B