Universal input surface-mount AC/DCs tailored for JEDEC reflow processes

Board-mounted AC/DCs have generally only been available through-pin technology, but now, RECOM makes automated assembly more straightforward, with parts rated for JEDEC's standard surface-mount reflow. The cost-effective RAC03-K/SMT series provides 3W output at 3.3, 5, 12, 15, 18, or 24VDC from a universal AC input of 85 to 265VAC (120 to 370VDC) in a package just 27.7mm x 27.83mm footprint including ‘gullwing’ SMT terminations. Height is 19mm. Parts operate to an ambient temperature of 60C without derating (50C for 3.3 and 5V outputs) and to 80C at reduced power.

Common safety standards, IEC/EN/UL62368-1, EN60335-1, and IEC61558-1, are met, and parts are rated as Limited Power Source, reinforced isolation, Class II, and for over-voltage category OVCII installation at up to 6000m altitude (IEC 60335-1). EMC directive standards are met, including conducted emissions to ‘Class B’ with no external components required (floating output). No-load power consumption is typically 100mW, and the parts meet eco-design standards for standby use.

The device's DC outputs are regulated and are fully protected against over-current and short circuits. Further improving reliability, the series achieves an MTBF close to 2M hours according to MIL-HDBK-217, GB conditions at 25C ambient.

These high-efficiency, reliable parts are excellent for a wide range of applications, including IoT, home/industrial automation, sensor power, household and monitoring devices, and housekeeping auxiliary power supplies in industrial products.

“We take pride in making our power products easy to integrate into customers’ end-equipment and the RAC03-K/SMT is a perfect example,” comments Michael Schrutka, MSc. AC/DC product managers of RECOM. “The parts can be reflow-soldered, eliminating the need for a costly, extra hand-soldering production stage.”

The device parts include a three-year warranty.