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RAC03-K/GB Series: RECOM’S 3W AC-DC Energy Efficient Modules

January 16, 2020 by Luke James

With new IoT applications on the horizon in 2020 and beyond, RECOM has created a new high-quality, no-load power consumption, and cost-effective series of interconnected application modules having a minimal 1 x 1 inches footprint size which offers optimal standby mode.

Considering technological advancements for smart applications which have become a part of several electronic products, RECOM has designed an optimized solution for converting VAC to VDC in form of a module having nominal footprint size of 1 x 1 inches.

One of Austria’s most renowned tech companies, RECOM manufactures power supply solutions rated from 0.25W to 960W with a global network of clients. The company has been in operation for over 45 years and serves a global clientele base.

RECOM’s latest RAC3 is a precise global solution for routine supplies that achieves an 80% energy efficiency from full load to standby mode, ensuring maximum energy savings for all load conditions. 



The product is available as two families - the K-Series and the GB-Series. The product is suitable for industrial applications, since the company states that it can work under temperatures from -40°C to +85°C smoothly. It can also convert various AC voltages ranging from 85VAC, 264VAC, 305 VAC and 528VAC to 3.3VDC to 48VDC. The RAC03-GB has built-in Class B/FCC Part 15 EMC filters which are certified to IEC/EN/UL60950-1, IEC/EN/UL62368 and EN61558 safety standards. 


Technical Features of RAC3

Apart from the smooth and sleek design of RAC3, it includes:

  • Enclosed module type

  • Maximum current output: 900mA

  • Universal input

  • Through-hole mounting 

  • 4-Dip module

  • Footprint: 1.12" L x 0.93" W x 0.70" H (28.5mm x 23.5mm x 17.9mm)


Benefits of RAC3

  • High power density

  • Optimal standby load

  • No-load power consumption

  • Efficiency 69% (avg)


Alternative Products

Below are some viable alternatives to RECOM’s MAC3. These comparisons were obtained from SnapEDA.


IRM-10-5 by Meanwell


Enclosed AC DC Converter 1 Output 5V 2A 85 ~ 305 VAC, 120 ~ 430 VDC Input

Enclosed AC DC Converter 1
Output 5V 2A 85 ~ 305 VAC,
120 ~ 430 VDC Input


This AC/DC Converter has voltage ranging from 85 - 264VAC, 120 - 370VDC which is greater than RAC3’s 3.3 – 48 VDC output supply. Also, it has 47 - 440Hz frequency range, 77% efficiency (RANCOM’s 69% approx.), 0.25A/115VAC input current, ±0.5% load regulation and 45.7×25.4×21.5 mm through-hole technology (THT) package. 


VSK-S10-12UA by CUI Inc


10 W, Single output, encapsulated, PCB mount, AC-DC power supply, CUI

10 W, Single output, encapsulated,
PCB mount, AC-DC power supply, CUI


This AC/DC Converter has an operating voltage range from 85 - 264VAC and 100 - 370VDC, 12V DC output, 100mVp-p ripple and noise, 47 - 440Hz frequency range, 81% efficiency, ±1.0% load regulation, and 230mA/110VAC input current in a 80×28.80×19 mm THT package.


RAC03-05SC by Recom Power


3W AC/DC-Converter 'POWERLINE' 3kV reg

3W AC/DC-Converter


The RAC03-05SC has an 80 - 264VAC, 115 - 370VDC voltage input range with a 5V DC output and 120mVp-p ripple and noise, 47 - 63Hz frequency range, 72% efficiency, 85mA/40mA max–115/230VAC input current, ±6% load regulation and 37.8×23.9×15.65 mm THT package. The company provides a warranty of three years along with the device. 


Product Review

RECOM’s RAC03 K-series and GB-series AC-DC converters are small-footprint, energy-efficient devices ideal for industrial applications such as IoT, manufacturing, and more. Engineers can utilise the converters in space-constrained designs and under a wide range of operating temperatures. The devices are suitable for converting a wide range of voltages with minimal power consumption and are compliant with international safety and quality standards. 

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