The B0303S-1W is an AC/DC power module with a through hole design that meets the EU standards for RoHS compliance. It is a single output, 3W switching power supply with a wide input voltage range of 85-264VAC and a full output voltage range of 3-24V. The power module features high efficiency up to 85%, low standby power loss at >0.4W, short circuit protection, overvoltage protection, and over temperature protection. The module is highly reliable, with an MTBF of upwards of 600K hours. It has an operating temperature range of -20~+80°C and is suitable for applications such as lighting control systems, meters, smart home, routers, and instruments.