UbiBot UDOO UEi Test Instruments uHave Control UJU Ultra Librarian® Ultraleap Ultralife UltraVolt Unexpected Maker Ungar / Weller (Apex Tool Group) Unictron Unigen UNION SEMICONDUCTOR INTERNATIONAL LIMITED Union Technology Corp. Unirise USA United Chemi-Con UnitedSiC UNIVERSAL-SOLDER Electronics UP Board Upside Down Labs UrsaLeo US Custom Billet US Digital US Electronics Inc. USound GmbH US-Lasers, Inc. UTD Semiconductor Uticor Technologies UV Resources UVCense u-blox U-Reach Data Solutions, Inc. U.S. Sensor (Littelfuse)