ON Semiconductor
Power and sensing semiconductor manufacturer
ON Semiconductor, operating under the brand onsemi, is an American semiconductor company specializing in power management and sensing chips used in automotive, industrial, and cloud infrastructure applications. Its product lines include…
Definition
ON Semiconductor, operating under the brand onsemi, is an American semiconductor company specializing in power management and sensing chips used in automotive, industrial, and cloud infrastructure applications. Its product lines include power discrete and module components for electric vehicles and power supplies, along with image sensors used in automotive cameras and industrial vision systems, and it has built a notable position in silicon carbide power devices for electric vehicle applications.
Overview
Power efficiency and reliable sensing are foundational requirements across a wide range of electronics, from an electric vehicle's motor drive system to an industrial robot's vision-guided assembly line, and both depend on specialized semiconductor technology rather than general-purpose processors. ON Semiconductor built its business around this layer of the electronics stack, supplying power semiconductors that manage and convert electrical energy efficiently, and image sensors that capture visual information for automotive and industrial systems. Mechanically, the company's power products include discrete transistors, diodes, and power modules built using wide-bandgap materials such as silicon carbide alongside traditional silicon, which allow devices to switch electrical current more efficiently at higher voltages and temperatures than older silicon-only designs, reducing energy loss in applications like electric vehicle inverters and data center power supplies. Its image sensor products use complementary metal-oxide-semiconductor sensor arrays paired with signal processing circuitry to capture and condition visual data, tuned for the dynamic range and reliability requirements of automotive and industrial cameras rather than the consumer photography market. Within the semiconductor industry, ON Semiconductor is grouped with power and analog specialists like Infineon Technologies and STMicroelectronics, distinguishing it from digital logic or memory chip makers; its silicon carbide power portfolio in particular positions it as a direct competitor in the fast-growing electric vehicle power electronics market. Its image sensor business, built up in part through acquisitions, competes with companies focused specifically on automotive and industrial vision sensors. In practice, automakers use ON Semiconductor's power devices in electric vehicle traction inverters, onboard chargers, and battery management systems, where efficient power conversion directly affects vehicle range and charging speed, while its image sensors appear in advanced driver-assistance camera systems and industrial machine vision equipment. Data center operators also use its power semiconductors in server and networking equipment power supplies, where efficiency losses at scale translate into significant energy costs. The trade-off with ON Semiconductor's focus is that it is primarily a component supplier for power and sensing subsystems rather than a provider of complete compute or AI platforms, so building a product around its chips requires substantial system-level design work by the customer. Silicon carbide power devices, while more efficient, also carry a higher unit cost than conventional silicon parts, meaning they are typically reserved for applications like EVs where the efficiency gain justifies the added expense rather than being used universally. As electric vehicle adoption and data center energy demands both grow, that cost gap has been narrowing, which is gradually widening the set of applications where the efficiency benefits of its silicon carbide portfolio outweigh the incremental price over conventional silicon.
Key Features
- Power discrete and module components including silicon carbide devices
- Image sensors tuned for automotive and industrial vision applications
- Focus on electric vehicle traction inverters and battery management chips
- Power supply components for data center and networking equipment
- Wide-bandgap materials enabling higher-voltage, higher-efficiency switching
- Operates under the onsemi brand across its product portfolio
- Positioned alongside Infineon and STMicroelectronics as a power specialist
- Serves automotive, industrial, and cloud infrastructure markets