P4SMA18AHE3/5ATVS 400W 18V 5% UNIDIR SMA|VISHAY SEMICONDUCTOR DIODES DIVISION|Lead free|RoHS Compliant P4SMA18A P4SMA18AHE3/61TVS 400W 18V 5% UNIDIR SMA|VISHAY SEMICONDUCTOR DIODES DIVISION|Lead free|RoHS Compliant P4SMA18A