The LGE 1SMA4742A is a surface mount package of two zener diodes with a high power rating of 3.5 W. This product was designed with ROHS certification, which indicates that it contains no hazardous substances such as lead, mercury, cadmium, hexavalent chromium, or polybrominated biphenyls. It features an integrated shielding case that helps to protect against interference or excessive external electrical fields. The two zener diodes with a breakdown voltage of 33 V have a 5 percent tolerance. Additionally, the diodes have a fast reverse recovery time of 6.5 ns and a Pd of 2.2 W. This product is best suited for applications such as reverse polarity protection, overvoltage protection, and power supply regulation.