Amphenol Corporation, together with its subsidiaries, primarily designs, manufactures, and markets electrical, electronic, and fiber optic connectors in the United States, China, and internationally. It operates through three segments: Harsh Environment Solutions, Communications Solutions, and Interconnect and Sensor Systems. The company offers connectors and connector systems, including harsh environment data, power, high-speed, fiber optic, and radio frequency interconnect products; busbars and power distribution systems; and other connectors. It also provides value-add products, such as backplane interconnect systems, cable assemblies and harnesses, and cable management products; other products comprising flexible and rigid printed circuit boards, hinges, other mechanical, and production related products. In addition, the company offers consumer device, network infrastructure, and other antennas; coaxial, power, and specialty cables; and sensors and sensor-based products. It sells its products through its sales force, independent representatives, and a network of electronics distributors to original equipment manufacturers, electronic manufacturing services companies, original design manufacturers, and service providers in the automotive, broadband communication, commercial aerospace, industrial, information technology and data communication, military, mobile device, and mobile network markets. Amphenol Corporation was founded in 1932 and is headquartered in Wallingford, Connecticut.

Hubbell Incorporated, together with its subsidiaries, designs, manufactures, and sells electrical and utility solutions in the United States and internationally. It operates through two segments, Electrical Solutions and Utility Solutions. The Electrical Solution segment offers standard and special application wiring device products, rough-in electrical products, connector and grounding products, lighting fixtures, and other electrical equipment for use in industrial, commercial, and institutional facilities by electrical contractors, maintenance personnel, electricians, utilities, and telecommunications companies, as well as components and assemblies. It also designs and manufactures various industrial controls, and communication systems for use in the non-residential and industrial markets, as well as in the oil and gas, and mining industries. This segment sells its products through electrical and industrial distributors, home centers, retail and hardware outlets, lighting showrooms, and residential product-oriented internet sites; and special application products primarily through wholesale distributors to contractors, industrial customers, and original equipment manufacturers. The Utility Solution segment designs, manufactures, and sells electrical distribution, transmission, substation, and telecommunications products, such as arresters, insulators, connectors, anchors, bushings, and enclosures cutoffs and switches; and utility infrastructure products, including smart meters, communications systems, and protection and control devices. This segment sells its products to distributors. Its brand portfolio includes Hubbell, Kellems, Bryant, Burndy, CMC, Bell, TayMac, Wiegmann, Killark, Hawke, Aclara, Fargo, Quazite, Hot Box, etc. The company was founded in 1888 and is headquartered in Shelton, Connecticut.

Littelfuse, Inc. designs, manufactures, and sells electronic components, modules, and subassemblies in the Americas, Asia-Pacific, and Europe. The company operates through Electronic, Transportation, and Industrial segments. The Electronics segment offers fuses and fuse accessories, positive temperature coefficient resettable fuses, electromechanical switches and interconnect solutions, polymer electrostatic discharge suppressors, varistors, reed switch based magnetic sensing products, and gas discharge tubes; and discrete transient voltage suppressor (TVS) diodes, TVS diode arrays, protection and switching thyristors, metal-oxide-semiconductor field-effect transistors and diodes, and insulated gate bipolar transistors. This segment serves industrial motor drives and power conversion, automotive electronics, electric vehicle and related charging infrastructure, aerospace, power supplies, data centers, telecommunications, medical devices, alternative energy, building and home automation, appliances, and mobile electronics markets. The Transportation segment provides blade, resettable, and high-current and high-voltage fuses, as well as battery cable protectors; fuses, switches, relays, circuit breakers, and power distribution modules; and sensor products. This segment serves heavy-duty truck, construction, agriculture, material handling, and marine. The Industrial segment offers industrial fuses, protection relays, contactors, transformers, residual current devices, ground fault circuit interrupters, residual current monitors, arc fault detection devices, and temperature sensors for use in renewable energy and energy storage systems, electric vehicle infrastructure, HVAC systems, industrial safety, non-residential construction, MRO, mining, and factory automation. It sells its products through distributors, direct sales force, and manufacturers' representatives. Littelfuse, Inc. was founded in 1927 and is headquartered in Chicago, Illinois.

Belden Inc. designs, manufactures, and markets a portfolio of signal transmission solutions for mission critical applications in the Americas, Europe, the Middle East, Africa, and the Asia-Pacific. It operates in two segments, Enterprise Solutions and Industrial Automation Solutions. The Enterprise Solutions segment offers copper cable and connectivity solutions, fiber cable and connectivity solutions, interconnect panels, racks and enclosures, and signal extension and matrix switching systems for use in applications, such as local area networks, data centers, access control, 5G, fiber to the home, and building automation. It also provides power, cooling, and airflow management products for mission-critical data center operations; and end-to-end fiber and copper network systems. This segment serves commercial real estate, education, financial, stadiums and venues, military installations, and broadband and wireless service providers, as well as data centers, governments, healthcare, and hospitality sectors. The Industrial Automation Solutions segment offers network infrastructure and digitization solutions; secure networks for the digitization and automation of industries and infrastructure; and products and solutions covering various aspects of data handling, including acquisition, transmission, orchestration, and management for applications in discrete automation, process automation, energy, and mass transit. It sells its products to distributors, end-users, installers, and original equipment manufacturers (OEMs). The company was formerly known as Belden CDT Inc. and changed its name to Belden Inc. in May 2007. Belden Inc. was founded in 1902 and is headquartered in Saint Louis, Missouri.

Power Integrations, Inc. designs, develops, manufactures, and markets analog and mixed-signal integrated circuits (ICs), and other electronic components and circuitry used in high-voltage power conversion worldwide. The company provides a range of alternating current to direct current power conversion products that address power supply ranging from less than one watt of output to approximately 500 watts of output for mobile-device chargers, consumer appliances, utility meters, LCD monitors, main and standby power supplies for desktop computers and TVs, LED lighting, and various other consumer and industrial applications, as well as power conversion in high-power applications comprising industrial motors, solar and wind-power systems, electric vehicles, and high-voltage DC transmission systems. It also offers high-voltage diodes; InnoSwitch IC for electric vehicles; high-voltage gate-driver products used to operate high-voltage switches, such as insulated-gate bipolar transistors and silicon-carbide MOSFETs under the SCALE and SCALE-2 product-family names; and SCALE-iDriver for use in powertrain and charging applications for electric vehicles. In addition, the company provides motor-driver ICs for use in refrigerator compressors, ceiling fans, and air purifiers, as well as pumps, fans, and blowers used in consumer appliances, such as dishwashers and laundry machines. It serves communications, computer, consumer, and industrial markets. The company sells its products to original equipment manufacturers and merchant power supply manufacturers through direct sales staff, as well as a network of independent sales representatives and distributors. Power Integrations, Inc. was incorporated in 1988 and is headquartered in San Jose, California.

Semtech Corporation designs, develops, manufactures, and markets analog and mixed-signal semiconductor and advanced algorithms. It provides signal integrity products, including a portfolio of optical data communications and video transport products used in various infrastructure, and industrial applications; a portfolio of integrated circuits for data centers, enterprise networks, passive optical networks, wireless base station optical transceivers, and high-speed interface applications; and video products for broadcast applications, as well as video-over-IP technology for professional audio video applications. The company offers protection products, such as filter and termination devices that are integrated with the transient voltage suppressor devices, which protect electronic systems from voltage spikes; and sensing products comprising a portfolio of specialized radio frequency products used in various industrial, medical, and communications applications, as well as specialized sensing products. In addition, it provides switching voltage regulators, combination switching and linear regulators, smart regulators, isolated switches, and wireless charging related products. Further, it offers portfolio of IoT solutions, such as modules, gateways, routers, and connected services; and portfolio of connected services, including wireless connectivity and cloud-based services for industrial, medical and communications applications. The company serves original equipment manufacturers and industrial end-markets. It sells its products directly, as well as through independent sales representative firms and independent distributors in Asia- Pacific, North America, and Europe. Semtech Corporation was incorporated in 1960 and is headquartered in Camarillo, California.

Applied Optoelectronics, Inc. designs, manufactures, and sells fiber-optic networking products in the United States, Taiwan, and China. It offers optical modules, optical filters, lasers, laser components, subassemblies, transmitters and transceivers, turn-key equipment, headend, node, distribution equipment, and amplifiers. The company sells its products to internet data center operators, cable television, telecom equipment manufacturers, fiber-to-the-home, and internet service providers through its direct and indirect sales channels. Applied Optoelectronics, Inc. was incorporated in 1997 and is headquartered in Sugar Land, Texas.

RF Industries, Ltd., together with its subsidiaries, designs, manufactures, and markets interconnect products and systems in the United States, Canada, Italy, Mexico, and internationally. The company operates through two segments, RF Connector and Cable Assembly, and Custom Cabling Manufacturing and Assembly. The company designs, manufactures, and distributes various coaxial connectors and cable assemblies that are integrated with coaxial connectors; custom copper and fiber cable assemblies, complex hybrid fiber optic and power solution cables, adapters, and electromechanical wiring harnesses for communication, computer, LAN, automotive, and medical equipment; energy-efficient cooling systems for wireless base stations and remote equipment shelters; and custom-designed pole-ready 5G small cell integrated enclosures. It also designs and manufactures cable assemblies and wiring harnesses for blue chip industrial, oilfield, instrumentation, medical, and military customers; connectivity solutions to telecommunications and data communications distributors; thermal control systems; and radio frequency and microwave distribution system products, such as dividers, directional couplers, and filters. The company sells its products through warehousing distributors and in-house marketing and sales team. It serves telecommunications carriers and equipment manufacturers, wireless and network infrastructure carriers, and original equipment manufacturers. The company was formerly known as Celltronics, Inc. and changed its name RF Industries, Ltd. in November 1990. RF Industries, Ltd. was incorporated in 1979 and is headquartered in San Diego, California.