The K78L03-500R3 is a Power Module Linear Regulator Replacement 1 4.75V 36V 86% with Min (Vin) SIP RoHS manufactured by MORNSUN. This regulator is used in a variety of electronics applications including laptop power supplies, automotive systems, LED lighting, industrial systems, and more. This regulator is designed to replace inefficient linear regulators, while providing stable 3A output current and up to 36V input voltage range. It also features 86% efficiency, RoHS compliant SIP package, and has a minimum input voltage of 4.75V. This regulator is also RoHS compliant, making it an environmental-friendly choice for designers and engineers.