The SKMW40F-03 from Mean Well is an Isolated Buck DC-DC Converter that converts an input voltage of 9-36 V to an output voltage of 3.3 V. It delivers an output power of 40 W and has an efficiency of 86%. This converter features international standard pins and offers a regulated output voltage. It provides an input-to-output isolation voltage of 2 kV (DC) and complies with BS EN/EN55032 Class A/B standard with additional components. This buck converter consists of a rich set of protection circuitries to safeguard against short-circuit, over-load, over-voltage, over-temperature, and under-voltage conditions. It is available in a through-hole package that measures 25.4 x 25.4 x 10 mm and is ideal for energy batteries, data switches, wireless networks, telecom/datacom, industrial, and space-saving applications.