Amphenol Corp (Amphenol) is a designer, manufacturer, and marketer of electrical, electronic, and fiber optic connectors and interconnect systems, antennas, sensors, and sensor-based products, as well as coaxial, high-speed, fiber optic, and specialty cable. The company serves a diverse range of industries, including automotive, commercial aerospace, communications networks, defense, industrial, information technology and data communications, and mobile devices. The company markets its products through two sales channels: end customers and contract manufacturers, and distributors and resellers. The company sells its products to original equipment manufacturers (OEMs), electronic manufacturing services (EMS) companies, original design manufacturers (ODMs), and service providers, including telecommunications network service providers and web service providers.

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Amphenol's R&D arm focuses on product development strategy involves product design teams at various business units globally, working collaboratively with customers. This approach often results in obtaining approved vendor status for customers' new products and programs. The company focuses its research and development efforts on product areas with potential for broad market applications and significant sales within a one- to three-year period. The aim is for products to become widely accepted within the industry, providing additional sources of future revenue. As of December 2025, it had approximately 6,400 employees in its R&D department. The R&D units of Amphenol are individual business units focused on specific markets and product technologies. These units are responsible for managing the company's R&D activities through close collaboration with customers to develop highly engineered products that meet customer needs and have the potential for broad market applications and significant sales within a one- to three-year period. In FY2025, the company incurred expenses of US$647 million on R&D, which as a percentage of revenue, stood at 2.8%.