PSDN-20-12 is a part manufactured by Wall Industries Inc., a global leader in power supply design, engineering and manufacturing. The part is part of the company's PSD series of regulated switching DC/DC converters, and is a 20 watt converter with a regulated 12V output. The part is designed to be highly efficient, with an input voltage range of 9-36 VDC, and is certified to UL and EN 61347-2-13 standards. It also features customizable protections, including short circuit, overvoltage and overtemperature. The part is ideal for applications such as telecommunications and industrial systems.