UTAC | 40,045 followers on LinkedIn. A leader in assembly and test services for diverse semiconductor devices | UTAC Holdings Ltd (“UTAC”) is a leading independent provider of assembly and test services for a broad range of integrated circuits with diversified end uses, including in-communications devices (such as smartphones, Bluetooth and WiFi), consumer devices, computing devices, automotive devices, security devices, and devices for industrial and medical applications. The company offers customers a full range of semiconductor assembly and test services in the following key product categories: analog, mixed-signal and logic, memory, image sensor, MEMS and discrets. UTAC customers are primarily fabless companies, integrated device manufacturers and wafer foundries.