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Diodes Incorporated, together with its subsidiaries, manufactures and supplies application-specific standard products in the broad discrete, logic, analog, and mixed-signal semiconductor markets worldwide. The company offers discrete semiconductor products, such as MOSFETs, SiC MOSFETs; data line protection, power line protection, thyristers, USB Type-C protection, and transient voltage suppressors; Schottky, small signal switching, Zener, and SiC diodes; bridges, super barrier, Schottky, Schottky bridge, and fast/ultra-fast rectifiers; and bipolar, avalanche, gate driver, and pre-bias transistors. It also provides analog products, including power management devices comprising AC-DC and DC-DC converters, USB power switches, low dropout, photocoupler and linear voltage regulators; standard linear devices consisting of operational amplifiers and comparators, current monitors, voltage references, and reset generators; LED lighting drivers; audio amplifiers; and sensor products, such as hall-effect sensors and motor drivers. In addition, the company offers mixed-signal products, such as high speed mux/demux, digital switches, interface, redrivers, universal level shifters/voltage translators, clock ICs and packet switches; standard logic products comprising low-voltage complementary metal-oxide-semiconductor (CMOS) and advanced high-speed CMOS devices; ultra-low power CMOS logic; and analog switches; multichip products and co-packaged discrete, analog and mixed-signal silicon in miniature packages; and silicon and silicon epitaxial wafers used in manufacturing frequency control products and contact images sensors. It serves the industrial, automotive, computing, communications, and consumer markets through direct sales, marketing personnel, independent sales representatives, and distributors. The company was incorporated in 1959 and is headquartered in Plano, Texas.

FormFactor, Inc. designs, manufactures, and sells probe cards, analytical probes, probe stations, metrology systems, thermal systems, and cryogenic systems to semiconductor companies and scientific institutions in the United States, Taiwan, South Korea, China, Europe, Japan, Malaysia, Singapore, and internationally. It operates in two segments, Probe Cards and Systems. The company offers probe cards to test various semiconductor device types, including systems on a chip products, mobile application processors, microprocessors, microcontrollers, and graphic processors, as well as radio frequency, analog, mixed signal, image sensor, electro-optical, dynamic random access memory, NAND flash memory, and NOR flash memory devices, as well as computer processor devices; and analytical probes, which are used for a range of applications, including device characterization, electrical simulation model development, failure analysis, and prototype design debugging for universities, research institutions, semiconductor integrated device manufacturers, semiconductor foundries, and fabless semiconductor companies. It also provides probe systems for semiconductor design engineers to capture and analyze accurate data; surface metrology systems for the development, production, and quality control of semiconductor products; thermal subsystems, such as thermal chucks and other test systems used in probe stations and other applications; and precision cryogenic instruments, semiconductor tests, and measurement systems. In addition, the company offers on-site probe card maintenance and service training, seminars, and telephone support services. It markets and sells its products through direct sales force, manufacturers' representatives, and distributors. The company was incorporated in 1993 and is headquartered in Livermore, California.

Photronics, Inc., together with its subsidiaries, engages in the manufacture and sale of photomask products and services in the United States, Taiwan, China, Korea, Europe, and internationally. It offers photomasks that are used in the manufacture of integrated circuits and flat panel displays (FPDs); and to transfer circuit patterns onto semiconductor wafers, and FDP substrates. The company offers electrical and optical components. It sells its products to semiconductor and FPD manufacturers, designers, and foundries, as well as to other high-performance electronics manufacturers through its sales personnel and customer service representatives. The company was formerly known as Photronic Labs, Inc. and changed its name to Photronics, Inc. in 1990. Photronics, Inc. was incorporated in 1969 and is based in Brookfield, Connecticut.

Ultra Clean Holdings, Inc. develops and supplies critical subsystems, components and parts, and ultra-high purity cleaning and analytical services for the semiconductor industry in the United States and internationally. The company provides ultra-clean valves, high purity connectors, industrial process connectors and valves, pneumatic actuators, manifolds and safety solutions, hoses, pressure gauges, and gas line and component heaters; chemical delivery modules that deliver gases and reactive chemicals in a liquid or gaseous form from a centralized subsystem to the reaction chamber; and gas delivery systems, such as weldments, filters, mass flow controllers, regulators, pressure transducers and valves, component heaters, and an integrated electronic and/or pneumatic control system. It also offers various industrial and automation production equipment; fluid delivery systems consist of one or more chemical delivery units, including PFA tubing, filters, flow controllers, regulators, component heaters, and an integrated electronic and/or pneumatic control system; precision robotic systems; top-plate assemblies; frame assemblies; process modules, a subsystem of semiconductor manufacturing tools that process integrated circuits onto wafers; and other high-level assemblies. In addition, the company provides tool chamber parts cleaning and coating services; micro-contamination analysis services for tool parts, wafers and depositions, chemicals, cleanroom materials, deionized water, and airborne molecular contamination; and analytical verification services for process tool chamber part cleaning. It primarily serves original equipment manufacturing customers in the semiconductor capital equipment and semiconductor integrated device manufacturing industries, as well as display, consumer, medical, energy, industrial, and research equipment industries. The company was founded in 1991 and is headquartered in Hayward, California.