Tajimi Electronics Co.
Tajimi Electronics Co. is a 100-year-old Japanese industrial connector manufacturer producing coaxial, optical, circular, waterproof, and high-voltage connectors for communications, broadcasting, medical, semiconductor, and factory-automation OEMs, distributed through nine domestic authorized distributors and direct sales.
- Company typePrivate
- Founded1923
- HeadquartersTokyo, Japan
- Headcount101–250
- GTM typeB2B
- OfferingHardware or Manufacturing
What Tajimi Electronics Co. does
Tajimi Electronics Co. (多治見無線電機株式会社) is a privately held Japanese industrial connector manufacturer founded in 1923 and headquartered in Ebisu, Tokyo, with manufacturing operations in Hadano (Kanagawa) and Chitose (Hokkaido). The company designs, manufactures, and sells coaxial, optical, circular, and square connectors used in communications, broadcasting, medical, semiconductor manufacturing, factory automation, measurement, and disaster-prevention equipment. Its catalog spans BNC, N, TNC, SMA, SMB, SMC, SHV, MHV, HN, and other series, alongside proprietary platforms such as the OPC/OPS optical-electrical hybrid connectors, PRC/EPRC push-pull one-touch lock connectors, HVW waterproof high-voltage coaxial connectors, and TXA triple coaxial connectors for precision measurement. Products are specified to JIS, MIL, and NDIS standards, carry IP65/IP67/IP68 ratings on waterproof lines, and comply with the RoHS2 directive (10 regulated substances); operations are certified to ISO 9001 and ISO 14001.
The business operates a sales-led, distributor-anchored model in which products reach customers through nine authorized Japan-domestic distributors — San-sei, Daitron, Tomihisa Musen, Okamoto Musen, Sankyo Denshi, Taisei Musen, Noma Electric, Mikuni Electric, and Meiji Denki — supplemented by direct enterprise sales from the Tokyo headquarters, custom connector design services, and cable harness assembly. Distribution is exclusively domestic, with e-commerce storefronts (Daitron EC-SHOP, Okamoto Musen E-JUNCTION) extending reach to smaller-volume buyers. Revenue is generated primarily through one-time product sales of catalog connectors, custom-manufactured connector solutions, and assembly/wiring services; pricing is not publicly disclosed and is handled through direct quote and distributor negotiation. The customer base is horizontal across multiple regulated industrial verticals, with no named anchor accounts disclosed in the source data, and the firm has no disclosed M&A, funding, or international expansion activity.
Tajimi Electronics Co. firmographics
Firmographics- Name
- Tajimi Electronics Co.
- Legal name
- TAJIMI ELECTRONICS CO., LTD.
- Website
- https://ssl.tajimi.co.jp
- Company type
- Private
- Founded year
- 1923
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Tajimi Electronics Co. is a 100-year-old Japanese industrial connector manufacturer producing coaxial, optical, circular, waterproof, and high-voltage connectors for communications, broadcasting, medical, semiconductor, and factory-automation OEMs, distributed through nine domestic authorized distributors and direct sales.
- Ownership category
- akta.pro rank
Tajimi Electronics Co. industry classification
Industry- Product category
- Industrial Connectors
- NAICS
- Electronic Connector Manufacturing (334417)
- SIC
- Electronic Connectors (3678), Electronic Components & Accessories (3670)
- akta.pro primary industry
- Connectors & Interconnect Components (Industrial connectors, terminals, sockets, backplane) (IMAGAJAC)
- akta.pro secondary industries
- RF & Microwave Connectors and Coaxial Assemblies (HDAHAOAD), Connectors (Power/Signal/High-Speed) (HDAHAOAA)
Keywords
Where Tajimi Electronics Co. is headquartered
LocationHeadquarters
- HQ city
- Tokyo
- HQ country
- Japan
- HQ region
- Asia
Offices3 records
Markets served
Tajimi Electronics Co. business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Technology or R&D, Infrastructure
Revenue model
- Standard Connector Products: Sale of standardized connector products across multiple series including coaxial, circular, rectangular, optical, waterproof, and high-voltage connectors
- Custom Connector Manufacturing: Custom-made connectors tailored to specific customer requirements, leveraging over 100 years of accumulated design and manufacturing expertise
- Assembly Products (Cable Harnesses): Cable assembly and wiring services using company connectors, providing complete connection solutions
Go-to-market motion1 record
Distribution channels3 records
Marketing channels3 records
Tajimi Electronics Co. product offering
Product offeringCore offering
Tajimi Electronics Co. designs, manufactures, and sells industrial electrical and optical connectors — including coaxial, optical fiber, circular, and rectangular types — along with specialized waterproof, high-voltage, and push-pull lock variants. The company produces standard catalog connectors and offers custom connector design and manufacturing for equipment makers requiring non-standard form, fit, or environmental specifications. Manufacturing is performed at company-owned plants in Japan under ISO 9001 / ISO 14001 quality and environmental systems.
Product overview
Tajimi Electronics Co. is an industrial connector manufacturer with over 100 years of history (founded 1923), specializing in a comprehensive portfolio of connector products. The core offerings include coaxial connectors (BNC, N, TNC, SMA, SMB, SMC series), optical connectors (OPC, OPS series for combined optical/electrical/power applications), circular connectors (PRC03, PRC04, EPRC05, EPRC07, ER01-ER29, R03-R14, TRC116, MR01, NDIS series), and square connectors (3RT01 series). The company provides both standardized products compliant with JIS/MIL specifications and original proprietary designs including waterproof connectors (IP65-IP68 ratings), high-voltage connectors (SHV, MHV, HN, HVW series), and one-touch push-pull lock connectors. In addition to catalog products, Tajimi offers custom connector manufacturing and cable assembly services, leveraging accumulated expertise from tens of thousands of past designs to meet specific customer requirements.
Differentiator
Problem solved
Functional benefit
Products and services
- Coaxial Connectors Industrial coaxial connectors for RF and signal transmission applications, manufactured by Tajimi Electronics and sold to equipment manufacturers for integration into electronic hardware.
- Optical Fiber Connectors Optical fiber connectors for fiber-optic signal interconnection, sold to equipment manufacturers and integrators needing reliable optical connectivity in industrial settings.
- Circular Connectors Circular industrial connectors used for power and signal interconnections in industrial equipment, manufactured and sold by Tajimi Electronics to OEM customers.
- Square/Rectangular Connectors Square and rectangular connectors for industrial equipment interconnection, designed and manufactured for OEM integration applications.
- Waterproof Connectors Waterproof/environmentally sealed connectors for industrial applications exposed to moisture or harsh environments, sold to equipment manufacturers needing rugged interconnect solutions.
- High-Voltage Connectors High-voltage connectors for industrial equipment requiring elevated voltage ratings, manufactured and sold by Tajimi Electronics for OEM integration.
- Push-Pull Lock Connectors Connectors with push-pull locking mechanisms enabling quick, secure engagement and disengagement, sold to industrial OEM customers requiring reliable mating systems.
- Custom Connector Design and Manufacturing Custom connector engineering and contract manufacturing service in which Tajimi Electronics designs and produces connectors to customer-specified form, fit, and environmental requirements that fall outside the standard catalog product line. Intended for equipment manufacturers needing tailored interconnect solutions.
Companies that use Tajimi Electronics Co.
Customer profileNamed customers6 records
Segments3 records
Ideal customer profiles2 records
Tajimi Electronics Co. technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Tajimi Electronics Co. partnerships and signals
Strategic signalPartnerships
Nine partnerships are on record, tiered major and minor.
- 株式会社三誠 (San-sei Co., Ltd.)majorPrimary authorized distributor covering Tokyo metropolitan area, western Tokyo (Hachioji), Kumagaya, East Kanto (Ibaraki), Utsunomiya, Aomori, Sendai, Matsumoto, Nagano, Nagoya, Shizuoka, Osaka, Fukuyama (Hiroshima), and Kyushu (Saga) regions
- ダイトロン株式会社 (Daitron Co., Ltd.)majorMajor distributor with nationwide coverage through regional offices in Osaka (headquarters), Tokyo, Tama, Ibaraki, Yokohama, Utsunomiya, Sendai, Matsumoto (Nagano), Kanazawa, Shizuoka, Nagoya, Kyoto, Kobe, Hiroshima, Fukuoka, Kumamoto; also operates B2C e-commerce shop
- 富久無線電機株式会社 (Tomihisa Musen Co., Ltd.)minorAuthorized distributor based in Tokyo (Bunkyo-ku) serving primarily Tokyo region customers
- 岡本無線電機株式会社 (Okamoto Musen Co., Ltd.)majorMajor distributor with extensive coverage including Osaka head office, Osaka, Nishinomiya, Kyoto, Himeji, Fukuoka, Kumamoto, Hiroshima, Nagoya, Okazaki (Aichi), Hamamatsu (Shizuoka), Kanazawa, Tokyo (Setagaya), Akihabara (Tokyo), Hachioji (Tokyo), North Kanto (Saitama), Tsukuba (Ibaraki), Kofu, Numazu (Shizuoka), Sendai; also operates E-JUNCTION online platform
- 株式会社三共電子 (Sankyo Denshi Co., Ltd.)minorAuthorized distributor based in Tokyo (Chiyoda-ku) serving primarily enterprise customers
- 大成無線株式会社 (Taisei Musen Co., Ltd.)minorAuthorized distributor with offices in Tokyo (Setagaya), Nagano (Ueda), and Tohoku (Sendai)
- ノマ電気株式会社 (Noma Electric Co., Ltd.)minorAuthorized distributor with offices in Tokyo (Minato-ku), Hitachi (Ibaraki), and Nagoya
- ミクニ電機株式会社 (Mikuni Electric Co., Ltd.)minorAuthorized distributor with headquarters in Nagoya and office in Nakatsugawa
- 明治電機工業株式会社 (Meiji Denki Co., Ltd.)minorAuthorized distributor based in Nagoya serving the Chubu region
Scale indicators3 records
Recent moves6 records
Expansion highlights4 records
Tajimi Electronics Co. competitors and assessment
Company assessmentBroad incumbents
- TE Connectivity: Global connector giant offering industrial, automotive, aerospace, and data communications connectors at massive scale. Overlaps with Tajimi in industrial circular and coaxial connectors but with vastly broader portfolio and global reach.
- Molex (Koch Industries): Global manufacturer of electronic interconnect solutions including industrial, automotive, and telecommunications connectors. Broader and larger-scale player than Tajimi with overlapping industrial connector offerings.
- Amphenol Corporation: One of the world's largest interconnect manufacturers with broad industrial, military, aerospace, and telecommunications connector lines. Competes with Tajimi in industrial and MIL-spec circular connectors but at much larger scale.
Direct peers
- Japan Solderless Terminals (JST): Japanese connector manufacturer offering a broad range of wire-to-board, board-to-board, and circular connectors for industrial, automotive, and consumer applications. Comparable Japan-based specialty connector supplier with similar end markets.
- SMK Corporation: Japanese manufacturer of connectors, jacks, and plugs serving communications, automotive, and consumer electronics markets. Similar profile to Tajimi as a Japanese specialty connector supplier with proprietary product designs.
- I-PEX (Dai-ichi Seiko Co., Ltd.): Japanese manufacturer specializing in high-precision coaxial and high-speed connectors for semiconductor equipment, automotive, and FA applications. Closely overlaps with Tajimi's coaxial and precision measurement product lines.
- Japan Aviation Electronics Industry (JAE): Japanese connector manufacturer producing electronic connectors for industrial, automotive, and aerospace applications with similar product breadth including circular, coaxial, and board-to-board connectors. Highly comparable to Tajimi's industrial connector focus and Japanese OEM customer base.
- Hirose Electric Co., Ltd. Japanese precision connector manufacturer with a strong portfolio of coaxial, high-frequency, and industrial connectors serving communications, automotive, and industrial markets. Directly comparable to Tajimi in terms of Japan-based specialty connector supply and customer profile.
- DDK Ltd. (Dai-Ichi Denki Kogyo): Japanese connector manufacturer with strong focus on industrial circular, rectangular, and MIL-spec connectors for factory automation, railways, and industrial machinery. Comparable product category and Japanese industrial customer base to Tajimi.
- Radiall SA: French manufacturer of RF, coaxial, and microwave interconnect products serving aerospace, defense, industrial, and telecommunications markets. Directly comparable to Tajimi's coaxial and high-voltage connector portfolio for industrial and aerospace applications.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights7 records
Customer concentration
Tajimi Electronics Co. compliance and trust
Trust signalCompliance3 records
Tajimi Electronics Co. financial estimates
Financial estimateRevenue estimate
Valuation estimate
Tajimi Electronics Co. leadership team
Management profileNumber of profiles
Tajimi Electronics Co. funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Tajimi Electronics Co. M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Tajimi Electronics Co.
What does Tajimi Electronics Co. do?
Tajimi Electronics Co. designs, manufactures, and sells industrial electrical and optical connectors — including coaxial, optical fiber, circular, and rectangular types — along with specialized waterproof, high-voltage, and push-pull lock variants. The company produces standard catalog connectors and offers custom connector design and manufacturing for equipment makers requiring non-standard form, fit, or environmental specifications. Manufacturing is performed at company-owned plants in Japan under ISO 9001 / ISO 14001 quality and environmental systems.
When was Tajimi Electronics Co. founded?
Tajimi Electronics Co. was founded in 1923. It employs 101 to 250 people.
Where is Tajimi Electronics Co. based?
Tajimi Electronics Co. is headquartered in Tokyo, Japan, in the Asia region.
How does Tajimi Electronics Co. make money?
Three revenue lines are on record. Standard Connector Products are the primary driver. The others are custom Connector Manufacturing and assembly Products (Cable Harnesses).
Who are Tajimi Electronics Co.'s main competitors?
Broad incumbents on record are TE Connectivity, Molex (Koch Industries) and Amphenol Corporation. Direct peers are Japan Solderless Terminals (JST), SMK Corporation, I-PEX (Dai-ichi Seiko Co., Ltd.), Japan Aviation Electronics Industry (JAE), Hirose Electric Co., Ltd., DDK Ltd. (Dai-Ichi Denki Kogyo) and Radiall SA.
Does Tajimi Electronics Co. have an API?
No public API is recorded for Tajimi Electronics Co..
What industry is Tajimi Electronics Co. in?
Tajimi Electronics Co.'s product category is Industrial Connectors. Its primary akta.pro industry code is IMAGAJAC, Connectors & Interconnect Components (Industrial connectors, terminals, sockets, backplane), with a secondary code of HDAHAOAD, RF & Microwave Connectors and Coaxial Assemblies. Its NAICS code is 334417 and its SIC code is 3678.