For these same reasons, RECOM has developed a low-cost 5W AC/DC converter in the smallest 1" x 1" package on the market, offering an impressive power density of 7.7 watts/in³.
RECOM's RAC05-K series are AC/DC converters specifically designed to power IoT and factory automation applications. These modules deliver high performance without the need for additional components. Thanks to modern, efficient manufacturing lines, RECOM can offer them at the lowest possible cost. Their low no-load power consumption of only 75 mW and consistent efficiency of up to 5% under load make them ideal for "always-on" IoT systems. Standard output voltages are 3.3, 5, 12, 15, and 24 V DC, providing sufficient power to operate relays, data gateways, and building automation nodes. A universal mains input voltage range of 85 V AC to 264 V AC makes them suitable for worldwide use. The modules feature a 60ms hold-up time on a 230V AC input, meaning that missing mains cycles do not affect the output. RECOM manufactures these converters in a lightweight, fully encapsulated plastic housing that occupies only one square inch on the printed circuit board, thus enabling their design for space-constrained applications. This series operates in a temperature range of -25°C to +50°C at full load (up to +70°C with derating) and is protected against overvoltage and short circuits. A Class B EMC filter is built-in without the need for additional components, saving even more space and cost. The RAC05-K series is fully certified to UL/IEC/EN60950-1 and UL/IEC/EN62368-1 with CB reports. They are CE marked and come with a three-year warranty. Samples are available from all authorized distributors.

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