HEI Inc

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The Microelectronic Assembly Operation offers high density, direct chip attach miniaturization solutions, including services from front end development through full production; Flex, Rigid-Flex and ceramic substrates, which are used as platforms for microelectronic assembly; engineering services for creative technological solutions; lean flow manufacturing; the ability to develop and implement a range of test software and hardware solutions.

The Medical Device Manufacturing Operation provides assistance in design, development, validation, and verification services for medical box build products and software interfaces for Class I, II, and III medical devices; transitional manufacturing services for medical products; and contract manufacturing and service work for all types of box build products and applications.
HEI, Inc. serves a wide variety of markets, including Medical, Defense and Aerospace, RF Communications, Sensors, Computing, and Industrial Equipment in the United States, Canada, Mexico, Europe, and Asia. The company was founded in 1968 and is headquartered in Victoria, Minnesota.