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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 (107)

Image of CUI's AE Series DC-DC Converters

DC-DC Converters for Renewable Energy Applications

CUI's AE series DC-DC converters for renewable energy applications.

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Low-Power Wall Plug Adapters

CUI's low-power wall plug adapters feature 3 W to 10 W continuous external power and fixed and interchangeable blades.

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USB Type-C™ Connectors

CUI’s USB Type-C™ UJ31 receptacle connector series and UP31 plug connector series conform to the USB 3.1 Gen 2 standard.

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USB Connectors

CUI's USB 2.0, 3.1 Gen 1 (previously 3.0), and 3.1 Gen 2 connectors feature Type A, Type B, Micro AB, Micro B, Mini AB, Mini B, and Type C USB versions.

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Image of CUI's Waterproof Electret Condenser Microphones

Waterproof Electret Condenser Microphones

CUI’s waterproof electret condenser microphones are ideally suited for a variety of industrial and outdoor applications.

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DC Axial Fans with omniCOOL™ System

CUI's CFM-V series of DC axial fans feature the innovative omniCOOL™ system for superior forced air cooling performance and longer operational life.

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Product Training Modules View All (24)


omniCOOL™ System

Duration: 5 minutes

This presentation will provide an overview on CUI's omniCOOL system, the different fans and their advantages and disadvantages.

power supply

Energy Efficiency Standards for External Power Supplies

Duration: 10 minutes

To explain the current and future regulatory environment for external ac-dc power adapters.

Image of CUI's heatsinks

How to Select a Heat Sink

Duration: 5 minutes

An overview of the benefits of heat sinks in thermal management, how to identify the proper heat sink for a design, and a review of CUI's line of stamped and extruded heat sinks.


High Efficiency Switching DC Regulators

Duration: 5 minutes

Available configurations, advantages versus linear regulators, key specifications, and possible applications for CUI's high efficiency switching DC regulators.

Featured Videos View All (29)

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.

Mounting the AMT Modular Encoder Series

An animation demonstrating the simplicity of mounting the AMT modular encoder series to a dc motor. For specifics on mounting the AMT10 incremental encoder series, please reference our separate video.

CUI's High Density Medical VMS Series | Digi-Key Daily

CUI medical AC-DC power supplies from 180 W to 550 W are high density additions to CUI’s medical power portfolio.

CUI VOF High Density AC-DC | Digi-Key Daily

CUI’s open-frame AC-DC power supplies from 180 W to 550 W are higher-density additions to their open-frame AC-DC power supply portfolio.

Tools & Support

Image of CUI's IEC 60601-1 Medical Design Standards

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

Image of CUI's Efficiency Standards for External Power Supplies

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

Image of CUI's arcTEC™ Structure

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

Image of CUI's Module or Discrete Power?

Module or Discrete Power?

With design cycles accelerating and applications demanding more power in less space, the engineer's decision of how to power their designs continues to evolve. In this paper, CUI delves further into the trade-offs and benefits of pre-designed power modules versus discrete power solutions. Learn More

Image of CUI's omniCOOL™ System

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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