THL 25-4811WI - 

Traco 25W Single/Dual Output Regulated Isolated DC-DC Converter - THL 25WI Series
The Tracopower THL 25WI comes in a metal case of very small dimensions, with high efficiency of up to 90% this isolated DC/DC converter is suited for use in temperature ranges of up to +80°C, or +85°C with optional mounted heat sink. The THL 25WI range of DC/DC converters feature a wide 4:1 input voltage range and precisely regulated output voltages. Typical applications of these DC/DC converters are in mobile equipments, instrumentation, distributes power architectures in communication and industrial electronics and everywhere where space on the PCB is critical.