Sumida

Sumida Corporation, headquartered in Tokyo, Japan, designs, manufactures, and sells electronic components and modules for a wide range of applications, including consumer electronics, automotive, and industrial sectors. Its operations span Japan, the rest of Asia, Europe, and both North and South America.

The company’s product lineup includes power and RF inductors—such as surface-mount, through-hole, and low-pass filter (LPF) coils for digital amplifiers, as well as RF chip inductors. It also offers power transformers, including surface-mount and through-hole types, PoE transformers, switching mode power supplies, reactors, and wireless power transfer coils.

Sumida provides signal magnetics for RF and communication systems, RFID tags, antennas, and related products. Its electromagnetic compatibility (EMC) solutions include AC/DC power line coils, normal mode chokes, and common mode chokes. The company also manufactures sensors and actuators such as rotor position sensors, ABS coils, and solenoid coils.

In the automotive sector, Sumida produces a variety of modules including choke modules for inverters, power conversion modules, module components, component carriers, and other automotive-related components. Additional offerings include ceramic-based passive components, electronic manufacturing services, flexible flat cables, and specialized components for medical devices like network isolation and isolation transformers.

Founded in 1950, the company was originally named Sumida Electric Co., Ltd. and adopted the name Sumida Corporation in June 2000.