- 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

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Newest Products View All (133)

Panel Mount Encoders Publish Date: 2010-09-17

Optical and mechanical encoders from CUI for multiple applications.

ACZ09 Series Encoders Publish Date: 2011-03-24

The ACZ09 encoder series from CUI is designed to provide an accurate and inexpensive method for user input across a wide range of applications.

5 mm SMT Buzzers Publish Date: 2011-07-04

CUI's 5mm buzzers ideal for mobile equipment applications.

VLED Series Publish Date: 2011-10-14

CUI's VLED series provides a compact, highly efficient constant current solution for driving LEDs.

Compact Power for Medical Design Publish Date: 2012-06-14

Find CUI high efficiency medical power supplies ranging from 20 W - 365 W at Digi-Key. Same-day shipping!

DC Switching Regulators Publish Date: 2012-06-14

View CUIs DC Switching Regulators features, resources and training videos at DigiKey. Buy CUI Voltage Regulators at DigiKey today!

Recent PTMs View All (24)

Buzzer Overview Publish Date: 2011-10-25

The main technologies used, working principles, key specifications, and potential applications of CUI's buzzer product offering.

Duration: 10 minutes
AMT203 Absolute Rotary Encoders Publish Date: 2011-10-25

CUI's ATM203 encoders utilize capacitive technology that is flexible and offers numerous mounting options in one encoder.

Duration: 15 minutes
Panel Mount Encoders Publish Date: 2011-10-26

The principles of panel mount rotary encoders and the key features of the ACZ series and C14 series from CUI.

Duration: 10 minutes
High Power Chassis Mount DC-DC Converters Publish Date: 2012-05-11

The VHK and VFK series provide a rugged, high power dc-dc solution from 50 watts up to 600 watts for applications that require a wide input range.

Duration: 5 minutes

Featured Videos View All (26)

CUI's V78 Switching Regulators -- Another Geek Moment

Watch Chris as he explains the diversity of CUI's V78 Switching Regulators, and recaps past Geek Moment videos that also used the V78.

CUI Inc High Power DC-DC Converters -- Another Geek Moment

Featuring an ultra wide input, CUI's high power dc-dc converter family is available in models ranging from 50~600 W

CUI Inc AMT Encoder Series – Another Geek Moment - View two demonstrations of CUI Inc’s AMT Encoder Series ruggedness. Visit to view all CUI products available at Digi-Key.

Mounting CUI’s AMT10 Modular Encoder Series

See the full process of assembling and mounting the AMT10 modular encoder onto a motor.

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

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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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