Sumida

What Sumida does

Sumida Corporation (TYO: 6817), founded in 1956 in Tokyo, designs and manufactures inductive components and modules — power inductors, RF inductors, power transformers, EMC coils, signal magnetics, sensors and actuators, power modules, automotive modules, magnetic materials, and flexible connections. Its technology base spans proprietary magnetic materials (MnZn/NiZn ferrite, soft magnetic materials, iron powder cores, piezo ceramics), advanced winding techniques (alpha, flat wire, litz, orthocyclic, toroidal), and specialized process technologies (metal injection molding, vacuum casting, plasma treatment, ferrite injection molding). The portfolio is anchored by 40+ patents held through subsidiary MOSTEC for edge-wide winding used in solar/wind generators, HV/EVs and aircraft applications.

Sumida operates through direct enterprise sales backed by regional sales offices and an extensive global distributor network across Asia, Europe and North America, serving the consumer electronics, automotive, industrial and medical equipment end markets via B2B quote-based pricing and multi-year supply contracts. The group runs 25+ production sites in Japan, China, Vietnam, Thailand, Germany, Romania, Slovenia, the Czech Republic, Mexico and the USA, with 14,964 consolidated employees as of December 31, 2025 and FY2025 consolidated net sales of 147.194 billion JPY. Automotive-grade quality is underwritten by AEC-Q200 and IATF 16949 qualifications; medical components are produced under ISO 13485 (held since 2015 at Sumida Power Technology). Most recent strategic emphasis is on high-reliability automotive power magnetics, ultra-high-power industrial magnetics, and entry into quantum magnetic sensing via Japan's BRIDGE program.

Name

Sumida

Legal name

SUMIDA CORPORATION

Website

http://www.sumida.com/

Company type

Public

Founded year

1956

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

Sumida Corporation (TYO: 6817), founded 1956, designs and manufactures inductive components and modules — including power inductors, transformers, EMC coils, sensors, magnetic materials and automotive modules — serving consumer electronics, automotive, industrial and medical OEMs through 25+ global production sites.

Ownership category

akta.pro rank

Product category

Electronic Components Manufacturing

NAICS

Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing (334416), Motor Vehicle Electrical and Electronic Equipment Manufacturing (33632)

SIC

Electronic Coils, Transformers & Other Inductors (3677), Electronic Components & Accessories (3670)

akta.pro primary industry

Inductors & Coils (Power/RF/Chokes) (HDAHANAC)

akta.pro secondary industries

Passive Components (Resistors, Capacitors, Inductors, Ferrites) (IMAGAJAA), EMI/EMC & Filtering Components (Common-mode chokes, filters, shielding materials) (IMAGAJAN)

Keywords

• Inductive components manufacturing
• Power inductors and transformers
• Automotive electronic components
• Magnetic materials and cores
• Sensors and actuators

Headquarters

HQ city

Obernzell

HQ country

Germany

HQ region

Europe

Offices27 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Inductive Components and Modules Sales: Design, manufacture and sale of inductive components and modules including power inductors, RF inductors, power transformers, signal magnetics, EMC coils, sensors and actuators, power modules, and automotive modules

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Sumida designs and manufactures inductive components and modules, including power inductors, RF inductors, power transformers, EMC coils, signal magnetics, sensors and actuators, power modules, automotive modules, magnetic materials, and flexible connections. The company supplies both standard catalog components and custom-engineered solutions to automotive, consumer electronics, industrial, and medical equipment manufacturers through direct enterprise sales and a global distributor network.

Differentiator

Problem solved

Functional benefit

Products and services

• Power Inductors High-quality inductors for power management applications in consumer electronics, automotive, and industrial markets.
• RF Inductors Radio frequency inductors for wireless communication and high-frequency applications.
• Power Transformers Transformers for power conversion and isolation in various electronic applications.
• EMC Coils Electromagnetic compatibility coils for noise suppression and interference filtering.
• Signal Magnetics Magnetic components for signal processing and data transmission applications.
• Sensors and Actuators Position sensors including rotor position sensors for hybrid-electric vehicles and current sensors for various industrial applications.
• Power Modules Integrated power modules combining multiple inductive components for compact power solutions.
• Automotive Modules Keyless antennas, ignition modules, and other components specifically designed for automotive electronics applications.
• Magnetic Materials From powder development to mass-produced cores, including MnZn Ferrite, NiZn Ferrite, iron powder cores, and soft magnetic materials.
• EMS (Electronic Manufacturing Services) Contract manufacturing services for electronic assemblies and modules.
• Flexible Connections Flexible printed circuit connections and board-to-board interconnect solutions.
• Components for Medical Equipment Inductive components designed for medical device applications, with ISO 13485 certification.
• Ceramic Components Ceramic components including chip inductors, EMI components, and ceramic trimmer capacitors.
• Keyless Antennas Antennas for automotive keyless entry systems.
• Xenon Ignition Modules Ignition modules for xenon lighting systems in vehicles.
• RFID Coils Radio-frequency identification coils for wireless tracking and identification applications.
• Power Chokes for Solar Inverters High-performance power chokes designed for solar inverter applications in renewable energy systems.
• High Power Coupled Inductor High power coupled inductors for automotive power conversion applications.
• Filter Module Filter modules for power conditioning and electromagnetic interference suppression.
• Rogowski Coil Flexible current measurement coils for AC current sensing in industrial applications.
• Wire-wound Contactless Current Sensor Contactless current sensors for non-invasive current measurement in automotive and industrial applications.
• Ultra High Power Magnetics MW class chokes and transformers for ultra high power industrial applications.
• WMT1513T150/DS SMD Metal Inductor AEC-Q200 qualified SMD metal inductor with soft saturation, high-rated current, and low DCR, designed for high-reliability automotive DC/DC converters and ECU applications.
• High Reliability SMT Chip Inductor Series High reliability surface mount chip inductors designed for demanding electronic environments with high thermal stability, shock resistance, vibration resistance, and high-performance electrical properties for medical, automotive, aerospace, and industrial markets.
• Ferrite Cores Ferrite cores manufactured from powder development through mass production, representing Sumida's materials expertise and innovation.

Quantifiable outcome

• AEC-Q200 qualified components for automotive reliability
• +1 more outcomes

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

14 partnerships are on record, tiered regional.

• Ebisu Electronics Co., Ltd.regionalChannel Partner/ Reseller/ DistributorAuthorized distributor in Japan handling Sumida products in Osaka region with local sales and technical support
• Tokyo Electronics Devices Co., Ltd.regionalChannel Partner/ Reseller/ DistributorAuthorized distributor in Japan handling Sumida products in Tokyo region with local sales support
• Arrow Asia PAC LTDregionalChannel Partner/ Reseller/ DistributorMajor Asian electronics distributor with coverage in Hong Kong Science Park
• Avnet Asia Pet Ltd.regionalChannel Partner/ Reseller/ DistributorGlobal technology distributor serving Taiwan region with Sumida component distribution
• Kenjet Technology Co., Ltd.regionalChannel Partner/ Reseller/ DistributorAuthorized distributor in Taiwan for Sumida products
• Sunfriend Electronic Co., Ltd.regionalChannel Partner/ Reseller/ DistributorAuthorized distributor in Taiwan for Sumida products
• Firmheart Technology (HK) Co., LtdregionalChannel Partner/ Reseller/ DistributorAuthorized distributor in Shenzhen/China region for Sumida products with sample store in New HuaQiang Plaza
• Modern Electronics Supply CompanyregionalChannel Partner/ Reseller/ DistributorAuthorized distributor in Hong Kong for Sumida products
• Sigma Component Design Ltd.regionalChannel Partner/ Reseller/ DistributorAuthorized sales representative covering Canada region for Sumida products
• MicroElec Technical, Inc.regionalChannel Partner/ Reseller/ DistributorAuthorized sales representative covering Oregon and Washington states for Sumida products
• Select Technology GroupregionalChannel Partner/ Reseller/ DistributorAuthorized sales representative covering Illinois and Wisconsin for Sumida products
• Electro Mark Inc.regionalChannel Partner/ Reseller/ DistributorAuthorized sales representative covering Iowa, Minnesota, North Dakota, South Dakota, NW Wisconsin for Sumida products
• Tempest Technical SalesregionalChannel Partner/ Reseller/ DistributorAuthorized sales representative covering Indiana, Kentucky, Ohio, Pennsylvania-Western, West Virginia for Sumida products
• TriStar HQregionalChannel Partner/ Reseller/ DistributorAuthorized sales representative covering Mexico region for Sumida products

Scale indicators8 records

Recent moves10 records

Expansion highlights5 records

Direct peers

• Bourns, Inc. Bourns is a US-based manufacturer of resistive products, circuit protection, magnetics, and inductive components including transformers, chokes, and inductors for automotive, industrial, and consumer applications. Bourns competes directly with Sumida in inductive components with a similar focus on automotive and industrial customer segments.
• Pulse Electronics (YAGEO Group): Pulse Electronics is a specialist manufacturer of inductive components including power magnetics, transformers, chokes, and antennas serving automotive, industrial, and telecommunications markets. Now part of YAGEO Group, Pulse competes directly with Sumida in custom magnetics for automotive and industrial power conversion applications.
• Coilcraft, Inc. Coilcraft is a US-based specialist manufacturer of RF inductors, power inductors, transformers, and EMI/RFI filters. Coilcraft competes directly with Sumida in standard catalog inductive components for consumer electronics, communications, and industrial applications with similar specialization in coil-based magnetic components.
• Würth Elektronik eiSos: Würth Elektronik is a German-based manufacturer specializing in electronic and electromechanical components with a strong focus on inductors, transformers, EMC components, and power magnetics. Würth is one of Sumida's closest direct competitors, particularly in European automotive and industrial markets, with comparable specialization in inductive components.

Broad incumbents

• Eaton Corporation (Coiltronics): Eaton's Coiltronics brand manufactures high-current power inductors, transformers, and magnetics for industrial, automotive, and power conversion applications. Eaton competes with Sumida in high-power magnetics for industrial and EV applications as part of a broader electrical power management franchise.
• TDK Corporation: TDK is a global leader in passive electronic components including a broad portfolio of inductors, transformers, EMC components, and magnetic materials. TDK competes directly with Sumida across automotive, consumer electronics, and industrial segments but operates at substantially greater scale with a much wider product breadth including batteries, sensors, and energy devices.
• Murata Manufacturing Co., Ltd. Murata is the world's largest manufacturer of MLCC capacitors and a major producer of inductors, EMI filters, and power magnetics for automotive, communications, and consumer electronics. Murata competes directly with Sumida in inductors and EMC components while operating a substantially larger and more diversified passive components franchise.
• Vishay Intertechnology, Inc. Vishay is a major US-headquartered manufacturer of discrete semiconductors and passive components including inductors, transformers, magnetics, and resistors. Vishay competes directly with Sumida in inductive components and power magnetics across automotive and industrial markets as part of a broader discrete component portfolio.
• Samsung Electro-Mechanics: Samsung Electro-Mechanics is a Korean manufacturer of passive electronic components including MLCC capacitors, inductors, and power modules serving automotive, IT, and consumer electronics markets. The company competes with Sumida in inductors and power magnetics as part of a broader component portfolio anchored by MLCC leadership.
• Taiyo Yuden Co., Ltd. Taiyo Yuden is a Japanese manufacturer of passive electronic components including inductors, capacitors, and EMI suppression products serving automotive, consumer electronics, and industrial markets. Taiyo Yuden competes with Sumida in inductors and EMC components while also offering broader passive component lines including multilayer ceramic capacitors.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/SumidaCorp
• YouTubeyoutube.com/user/SUMIDACORPORATION
• Facebookfacebook.com/SumidaOfficial
• LinkedInlinkedin.com/company/sumida

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries14 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A8 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sumida