Recom – Complete 5W AC-DC converter in compact modular package


RECOM’s new RAC05-K series are low-cost 5W AC-DC converters in a 1′′ x 1′′ package which offer high power density of 7.7W/in3 and high efficiency at light and full load.

The RAC05-K converters are intended for use in Internet of Things (IoT) devices and factory- automation systems that include sensors and communications nodes that are always on. These systems are typically in a quiescent state for long periods, and so require a power supply which draws little power when supplying light loads. The no- load power consumption of the RAC05-K parts is only 75mW and efficiency remains above 70% even when the load falls to as low as 10% of the converter’s maximum power output.

The RAC05-K modules provide a complete offline power supply with no need for external components. They operate from a universal mains input-voltage range of 85V to 264V AC, and provide standard output voltages of 3.3V, 5V, 12V, 15V or 24V DC, giving sufficient power to operate relays, data gateways and building- automation nodes.

The modules feature a 60ms hold-up time at an input of 230V AC, which means that missing mains cycles do not affect the output.


  • Operating-temperature range: -25°C to 50°C at full load
  • Short-circuit, over-voltage and overcurrent protection functions
  • Internal EMC class B filter
  • UL/IEC/EN60950-1 and UL/IEC/EN62368-1 certifications
  • CE marked
  • Three-year warranty


  • IoT devices
  • Stand-by power equipment
  • Monitoring systems
  • Instruments and meters
  • Controllers and sensors
  • Industrial controls
  • Security systems
  • Space-constrained designs