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- CUI is an electronic components manufacturer with an unwavering commitment to design engineers. The company specializes in a diverse range of product technologies, including power, interconnect, audio, motion control, and thermal management.

Power Solutions

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As a leader in the power supply industry, CUI energizes your ideas with a diverse range of leading ac-dc power supplies and dc-dc converters. Learn More

Thermal Management Solutions

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Defeat heat in your application with CUI’s dc fans, blowers, heat sinks, and Peltier devices—all aimed at enhancing system longevity and performance. Learn More

Audio Solutions

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CUI’s buzzers, speakers and microphones are sound solutions for any design, offering a variety of options for maximum flexibility. Learn More

Featured Products

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Interconnect Solutions

Comprised of power, audio, DIN, RCA and USB connectors, CUI offers quality connections for a range of applications, simplifying the design process. Learn More

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Motion Solutions

CUI is revolutionizing encoder technology with its ground breaking AMT modular encoders that deliver both accuracy and durability without tradeoffs. Learn More

Product Listing View All

Newest Products View All (121)

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AF/SF Series Thermal Pads

CUI's AF and SF series of thermal conductive pads offer packages from 10 mm x 10 mm to 70 mm x 70 mm and are designed with non-silicone or silicone elastomer.

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50 W to 85 W Open Frame AC-DC Power Supplies

Offering power ratings from 50 W to 85 W, CUI’s VOF-50B, VOF-70B, and VOF-85B series are low-cost solutions in industry standard 2” x 4” packages.

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AC-DC Power Line Filters

CUI’s EMC-20/EMC-30 AC-DC power line filters feature a 150 kHz to 1 GHz noise filtering range and have an 85 VAC to 305 VAC input voltage range.

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TO-220 Stamped Heat Sinks

CUI's HSS series of heat sinks features high thermal conductivity to improve heat dissipation and are available with and without solder pins.

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CUI Audio Solutions

Audio Solutions

CUI offers a variety of audio solutions including buzzers, speakers, microphones, and audio solutions used in a variety of applications including automotive and medical.

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MEMS Microphones

CUI’s MEMS microphones provide users with improved audio quality and performance in compact, low profile packages as small as 2.75 mm x 1.85 mm x 0.95 mm.

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Product Training Modules View All (26)


Power Supply Safety Standards, Agencies and Marks

Duration: 10 minutes

Reviewing the power supply international safety standards, the major agencies, and regional safety marks.

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DC-DC Converters for Renewable Energy Applications

Duration: 5 minutes

This is an overview of CUI’s AE series of wide input DC-DC converters, including their benefits, features, and use in renewable energy applications


How to Select a Fan for Forced Air Cooling

Duration: 10 minutes

This module will provide an overview on how to select the proper fan for forced air cooling.

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Medical Power Supplies and the IEC 60601-1 Medical Design Standards

Duration: 10 minutes

Overview of the IEC 60601-1 medical design standards as well as an introduction to CUI's line of internal and external certified products for this line.

Featured Videos View All (27)

CUI CMS Series | Digi-Key Daily

CMS series of waterproof micro speakers with ingress protection (IP) ratings of IP67 from CUI are housed in compact packages as small as 15 mm x 11 mm.

Publish Date: 2018-11-01

CUI VGS-B Metal Case AC-DC Power Supplies | Digi-Key Daily

VGS-B series of compact, chassis mount AC-DC power supplies from CUI are housed in an enclosed metal case. Offering power ratings from 35 W to 350 W, these power supplies feature low 30 mm profiles and packages as small as 99 mm x 82 mm x 30 mm.

Publish Date: 2018-10-05

CUI AE Series DC-DC Converters | Digi-Key Daily

AE series of ultra-wide input DC-DC converters from CUI are available in board mount, chassis mount, and DIN rail mount configurations.

Publish Date: 2018-07-16

CUI USB Type-C Connectors | Digi-Key Daily

USB Type-C UJ31 receptacle connector series and UP31 plug connector series from CUI conform to the USB 3.1 Gen 2 standard that supports data transfer speeds up to 10 Gbps and power delivery up to 100 W at 20 V.

Publish Date: 2018-03-14

Tools & Support

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IEC 60601-1 Medical Design Standards for Power Supplies

With the coming transition to IEC 60601-1 4th edition, designers of medical equipment must consider a range of new requirements. In this paper, CUI takes a look at the evolution of IEC 60601-1 and its implications for engineers specifying power supplies for medical devices. Learn More

Image of CUI's What is the Most Effective Way to Commutate a BLDC Motor?

What is the Most Effective Way to Commutate a BLDC Motor?

Learn about the different methods and tradeoffs for commutating BLDC motors and how CUI's AMT commutation encoder series is providing a valuable solution to the quickly-growing BLDC market. Learn More

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Efficiency Standards for External Power Supplies

This paper examines the evolution of efficiency standards and provides a summary of the current global legislation impacting external ac-dc power supplies. Learn More

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arcTEC™ Structure

This paper takes a look at CUI's arcTEC™ structure, found in its line of high performance Peltier modules, versus general Peltier module construction. Learn how the arcTEC structure provides improved performance and reliability, outperforming conventional thermoelectric cooler design. Learn More

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IEC 62368-1 An Introduction to the New Safety Standard for ICT and AV Equipment

The established safety standards for ICT equipment (60950-1) and AV equipment (60065) are to be phased out in favor of a single standard, 62368-1, in North America and the EU. The new standard introduces a different, hazard-based philosophy to product testing. What does it mean for product certification, and how can OEMs best manage the transition? Learn More

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omniCOOL™ System

Discover how CUI's omniCOOL™ system, found in its line of sleeve bearing axial fans, bridges the gap between traditional sleeve and ball bearing designs, thanks to dramatically reduced fan friction, wobble, and noise, in addition to improved fan life and performance. Learn More

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