What Miyoshi Electronics does

Miyoshi Electronics Corporation (ミヨシ電子株式会社) is a Japanese electronics manufacturing services (EMS) provider founded in 1968 in Hiroshima Prefecture as Sanji Electric, originally established as a Mitsubishi Electric black-and-white television manufacturing subsidiary. The company operates four business segments: (1) Information Communications Business, developing wireless modules (LTE-M adapters, LoRaWAN, 920MHz, Bluetooth, Zigbee, millimeter-wave 60GHz) and IoT/medical/automotive terminals; (2) Semiconductor EMS Business, providing die bonding, wire bonding (Au/Al from φ18–500μm), molding, and packaging for sensors, RF, power, and LED devices since 1980; (3) Electronic Equipment EMS Business, with four SMT lines supporting 0402 chip size and 0.10mm pitch for small high-density boards and DIP/SMT mixed assemblies, including medical device manufacturing via subsidiary Synergy Technica; and (4) Thick Film Ceramic Substrate Business for automotive and high-frequency applications.

The company generates revenue through B2B enterprise contracts — primarily hardware sales for manufactured products and professional services for semiconductor backend manufacturing — priced via quote-based enterprise sales conducted through headquarters and Tokyo/Nagoya branch offices. Its customer base spans automotive OEMs, NTT docomo, medical institutions, energy companies, and construction/industrial firms, with Mitsubishi Electric as both 42.8% shareholder and flagship customer for high-frequency RF power amplifier devices where it holds 55% world market share in professional wireless (fire, police, railway, mining, taxi). In April 2026 Mitsubishi Electric announced the transfer of its Contact Image Sensor (CIS) business to Miyoshi, effective April 2028.

The company is a private consolidated subsidiary of Mitsubishi Electric Corporation (registered capital ¥400M, headquartered in Kawanishi, Hyogo Prefecture, with primary manufacturing in Miyoshi City, Hiroshima Prefecture). Group companies include Wave Technology (development/engineering), Synergy Technica (manufacturing with medical device certification), and MEC.i (after-sales service), providing integrated one-stop capability from design through maintenance. Reported consolidated revenue for FY March 2026 was ¥17,877M with 142 standalone employees.

Name

Miyoshi Electronics

Legal name

ミヨシ電子株式会社

Website

https://miyoshi.elec.co.jp

Company type

Private

Founded year

1968

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Miyoshi Electronics is a Japanese EMS/OEM/ODM provider founded in 1968, offering development, design, and manufacturing for information communication equipment, semiconductor packaging, and electronic modules. It serves automotive, medical, infrastructure/energy, and industrial customers, and is a 42.8%-owned subsidiary of Mitsubishi Electric.

Ownership category

akta.pro rank

Product category

Electronics Manufacturing Services

NAICS

Other Communications Equipment Manufacturing (334290), Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing (334220), Relay and Industrial Control Manufacturing (335314)

SIC

Electronic & Other Electrical Equipment (No Computer Equip) (3600), Communications Equipment, Nec (3669)

akta.pro primary industry

Industrial Electronics Manufacturing Services (EMS) (IMAGAGAA)

akta.pro secondary industries

Industrial Power & Energy Electronics Manufacturing Services (UPS, converters, inverters, chargers) (IMAGAGAI), Industrial IoT/Edge Electronics Manufacturing (Gateways, Edge Controllers) (IMAGAGAC), Test, Measurement & Calibration Equipment Manufacturing Services (ATE, DAQ, metrology electronics) (IMAGAGAH)

Keywords

• Electronics manufacturing services
• Semiconductor packaging services
• Wireless communication modules
• OEM ODM manufacturing
• Thick film ceramic substrates

Headquarters

HQ city

Kawanishi

HQ country

Japan

HQ region

Asia

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. EMS Contract Manufacturing Services: Electronics manufacturing services (EMS) including OEM and ODM for information communication equipment, semiconductor devices, and electronic modules. Revenue is generated through manufacturing fees for customer-designed products.
2. Semiconductor Backend Manufacturing: Post-process manufacturing for sensors, RF, power, LED devices including packaging and module integration. Services include die bonding, wire bonding, surface mounting, molding, and inspection.
3. Custom Board and Module Development: Custom board design, high-frequency modules, sensor modules, and communication modules developed and manufactured to customer specifications.
4. Thick-Film Ceramic Substrate Manufacturing: Manufacturing of thick-film ceramic substrates with superior heat resistance, solvent resistance, and wear resistance for automotive, high-frequency, and industrial applications.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Miyoshi Electronics provides electronics manufacturing services (EMS) including OEM and ODM for information communication equipment, semiconductor devices, and electronic modules. The company operates across four business areas: Information Communication Business (wireless modules, LTE-M adapters, RF power devices), Semiconductor EMS Business (die bonding, wire bonding, molding for sensors/RF/power/LED), Electronic Equipment EMS Business (PCB assembly, medical device manufacturing), and Thick Film Ceramic Substrate Business for automotive and high-frequency applications.

Product overview

Miyoshi Electronics is an electronics manufacturing services (EMS/OEM/ODM) company providing development, design, and manufacturing for information communication equipment and semiconductor devices. The company's product portfolio spans four main business areas: (1) Information Communications Business offering wireless communication modules including LTE-M adapters, wireless M2M modules, LoRaWAN solutions, and various terminal devices for automotive, medical, energy, and building/facility applications; (2) Semiconductor EMS Business providing die bonding, wire bonding, surface mounting, and molding services for sensors, RF, power, and LED devices; (3) Electronic Equipment EMS Business manufacturing small high-density boards, DIP/SMT assemblies, and complete products including medical devices; and (4) Thick Film Ceramic Substrate Business producing ceramic-based substrates for automotive and high-frequency applications. Key products include the LTE-M Adapter for remote monitoring/control, medical IoT devices for equipment status/location detection, network remote controls, vehicle-mounted terminals, industrial remote controls, and RF power devices. The company is also acquiring Mitsubishi Electric's Contact Image Sensor (CIS) business scheduled for transfer in April 2028.

Differentiator

Problem solved

Functional benefit

Products and services

• Electronic Equipment Manufacturing Services

Quantifiable outcome

• World-leading 55% market share for high-frequency power amplification devices (fire, police, railway, mining, taxi sectors)
• +3 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Partnerships

Five partnerships are on record, tiered core and supporting.

• 三菱電機株式会社 (Mitsubishi Electric Corporation)coreStrategic or Co-development Partner · 1 April 2026Mitsubishi Electric will transfer its Contact Image Sensor (CIS) business to Miyoshi Electronics on April 1, 2028. Transfer activities including manufacturing, design, quality, technology, procurement, and sales channels will begin in April 2026.
• 株式会社Wave Technology (WTI)coreOthers100% owned subsidiary of Miyoshi Electronics specializing in electronic device and information communication equipment development and engineering. Founded 1984, capital ¥50 million, 229 employees, sales ¥2,665 million (FY March 2026).
• 株式会社シナジーテクnicacoreOthers100% owned manufacturing subsidiary specializing in semiconductor and communication equipment manufacturing. Holds Medical Device Manufacturing Certification (34BZ200025) obtained May 21, 2014 for medical device parts and manufacturing.
• MEC.i 株式会社supportingOthers100% owned subsidiary specializing in maintenance services for mobile phones and communication equipment products.
• NTT docomosupportingTechnology or IntegrationLong-term partnership for development and production of automotive and construction vehicle communication terminals using wide-area public networks including handheld terminals and IoT/M2M solutions.

Scale indicators4 records

Recent moves13 records

Expansion highlights5 records

Direct peers

• Hosiden Corporation: Japanese EMS and electronic components manufacturer specializing in sensors, switches, displays, and communications modules for automotive and consumer customers. Directly comparable EMS model with end-market overlap in automotive and industrial electronics.
• Yokowo Co., Ltd. Japanese manufacturer of wireless communications equipment and electronic components, including antennas, RF components, and EMS-style services for automotive and industrial customers. Highly comparable to Miyoshi's RF/wireless communications equipment focus and Japan-centric B2B customer base.
• Anritsu Corporation: Japanese manufacturer of test and measurement equipment with strong wireless/RF testing capabilities and frequency coverage up to millimeter wave. Comparable technology footprint in RF measurement (Miyoshi tests 30MHz-3.6GHz at up to 100W; Anritsu serves similar RF/T&M markets from telecom to industrial).

Broad incumbents

• Mitsubishi Electric Corporation: Mitsubishi Electric is Miyoshi Electronics' 42.8% parent and major customer. Operates across power electronics, communications equipment, factory automation, and semiconductor devices with significant overlap in RF amplifiers, semiconductor packaging equipment, and FA/industrial electronics served by Miyoshi.
• TDK Corporation: Japanese electronic components giant with strong portfolio in sensors, RF components, and power electronics for automotive, industrial, and communications markets. Comparable product overlap in RF/sensor components and substrate-like technologies though at significantly larger scale.
• Murata Manufacturing Co., Ltd. World-leading Japanese manufacturer of passive electronic components including RF modules, sensors, and wireless communication modules for mobile, automotive, and IoT applications. Overlaps with Miyoshi in wireless/RF components but operates at vastly larger scale with global distribution.
• Sumitomo Electric Industries, Ltd. Diversified Japanese manufacturer with strong presence in industrial electronics, automotive components, and information/communications equipment. Comparable in serving automotive and infrastructure electronics customers and possessing thick-film/ceramic substrate capabilities.

Others

• SCREEN Holdings Co., Ltd. Japanese semiconductor equipment manufacturer serving semiconductor packaging/assembly processes, relevant as an adjacent ecosystem participant to Miyoshi's semiconductor EMS packaging/die bonding business.
• Nippon Telegraph and Telephone (NTT) Group: NTT Group companies (including NTT docomo) are both customers of and adjacent to Miyoshi's LPWA/IoT communications modules. NTT operates Japan-centric telecom networks that consume IoT gateway and M2M device modules similar to Miyoshi's LPWA adapters.

Regional players

• NEC Platforms, Ltd. Japanese EMS/ODM arm of NEC focused on communications equipment, networking, and IoT devices within the domestic Japanese market. Comparable services and end-customers, though primarily focused on telecom/networking boxes rather than RF amplification.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries3 records

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about Miyoshi Electronics