High-Efficiency SMT
AC/DC Converters

The cost-effective RAC03-K/SMT series offers 3 W output options at 3.3, 5, 12, 15, 18, or 24 VDC from a universal AC input of 85 to 265 VAC (120 to 370 VDC), all within a compact 27.7 x 27.83 mm footprint with ‘gullwing’ SMT terminations and a 19 mm height. These parts operate at ambient temperatures up to 60 °C without derating (50 °C for 3.3 V and 5 V outputs), and up to 80 °C with reduced power.

The RAC03-K/SMT series meets key safety standards, including IEC/EN/UL62368-1, EN60335-1, and IEC61558-1. They are classified as Limited Power Source, with reinforced isolation, Class II insulation, and are rated for OVCII installation up to 6000 m altitude (IEC 60335-1).
They also comply with EMC directive standards, achieving “Class B” conducted emissions without the need for external components (floating output). With a typical no-load power consumption of just 100 mW, these parts meet Eco-design standards for standby applications. The series provides regulated DC outputs, is fully protected against overcurrent and short circuits, and boasts an MTBF of nearly 2 million hours according to MIL-HDBK-217, GB conditions at 25 °C ambient. These high-efficiency, reliable converters are ideal for a wide range of applications, including IoT, home/industrial automation, sensor power, household and monitoring devices, and auxiliary power supplies in industrial products.
“We are committed to making our power products easy to integrate into customers’ end-equipment, and the RAC03-K/SMT is a prime example,” says Michael Schrutka, MSc., AC/DC Product Manager at RECOM. “These parts can be reflow-soldered, eliminating the need for a costly additional hand-soldering step.”