- 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 line of rotary encoders and stepper servo motors, delivering highly reliable solutions in a range of configurations. Learn More

Product Listing View All

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Newest Products View All (136)

Screwless Terminal Blocks

CUI's screwless terminal block connectors come in blue and gray options with horizontal and 45-degree orientations for a wide range of interconnect needs. Learn More

Pluggable Terminal Blocks

CUI’s versatile terminal blocks feature up to 24 pole counts and 3.81 mm or 5.08 mm pitches making them well suited for a range of interconnect needs. Learn More

Compact Electret Condenser Microphones

Used to convert sound into an electric signal, CUI’s ECM microphones contain a permanent charge, eliminating the need for an external polarizing voltage. Learn More

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. Learn More

PYBJ10 Series 10 W Isolated DC-DC Converters

Outputting up to 10 W of continuous power, CUI’s open-frame and encapsulated converters deliver a 4:1 input voltage range and up to 88% efficiency. Learn More

Screw Type Terminal Blocks

CUI’s versatile screw type terminal blocks are available in 2 to 24 pole counts are well suited for users' interconnect needs. Learn More

Recent PTMs View All (24)

Capacitive Absolute Rotary Encoders Updated: 2019-07-16

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

Duration: 15 minutes
High Efficiency Switching DC Regulators Updated: 2019-06-25

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

Duration: 5 minutes
Low Power DC-DC Converters Updated: 2019-06-25

Provides an economical and reliable means of converting and/or isolating DC rails within a distributed power system for a variety of applications.

Duration: 5 minutes
Encapsulated AC/DC Power Supply Series Updated: 2019-06-24

This presentation will provide an overview of CUI’s encapsulated AC/DC power supply family, including a summary of available models, features, and target applications.

Duration: 5 minutes

Featured Videos View All (27)

CUI Stepper Servo Motors | Digi-Key Daily

NEMA-AMT112S series of stepper servo motors from CUI combines an AMT11 incremental encoder and compact stepper motor into one highly reliable, convenient package.

CUI IP-Rated Audio Solutions | Digi-Key Daily

CUI's waterproof speakers, microphones, and buzzers offer ingress protection (IP) ratings up to IP68, diameters as small as 4 mm, and depths as low as 1.5 mm.

CUI IEC 62368-1 Adapters | Digi-Key Daily

CUI’s wall plug and desktop adapters are compliant with IEC 62368-1 safety standards to help keep the user in-line with US and EU regulations.

CUI MEMS Microphones | Digi-Key Daily

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.

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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