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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 (115)

Image of CUI's Waterproof Micro Speakers

Waterproof Micro Speakers

CUI's waterproof micro speakers are ideal for devices that may be subject to moisture and environmental contaminants in industrial and outdoor applications.

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Image of CUI Inc. NEMA-AMT112S Stepper Servo Motors

NEMA-AMT112S Stepper Servo Motors

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

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Image of CUI Inc. VGS-B Series Metal Case AC-DC Power Supplies

VGS-B Series Metal Case AC-DC Power Supplies

CUI’s VGS-B series of compact, chassis mount AC-DC power supplies are housed in an enclosed metal case.

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Image of CUI's MR and SR Series Audio Receptacle Connectors

Audio Receptacle Connectors

CUI's MR/SR series audio receptacle connectors carry audio signals in a variety of consumer, home and office equipment, and portable electronic applications.

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Image of CUI's DC Power Receptacle Connectors

DC Power Receptacle Connectors

CUI's DC power receptacle connectors are suitable for consumer, household, and portable electronic applications.

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Image of CUI Multi-Stage Peltier Modules

Multi-Stage Peltier Modules

CUI’s multi-stage Peltier modules feature higher temperature differentials, reliable solid-state construction, and precise temperature control.

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Product Training Modules View All (26)

Image of CUI's  DC-DC converter

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.

Image of CUI's IEC60601-1 for medical power supplies

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.


Electret Condenser Microphones

Duration: 10 minutes

CUI's Electret Condenser Microphones convert sound into an electrical signal and are commonly used in telephones, GPS, hearing aids, and more.

Featured Videos View All (30)

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

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.

Publish Date: 2018-02-21

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.

Publish Date: 2018-01-10

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

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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