What Koa Electronics does

Koa Electronics Co., Ltd. (興亜エレクトロニクス株式会社) is a Japanese manufacturer of fixed resistors, founded in 1969 and headquartered in Anan Town, Nagano Prefecture, Japan. The company operates as a wholly-owned manufacturing subsidiary of KOA Corporation, a publicly listed entity on the Tokyo Stock Exchange Prime Market, and runs six production factories plus a dedicated innovation lab in the Minami Shinshu region. Its product portfolio spans lead-type fixed resistors (carbon film CF/CFP, metal film SNF, oxide metal film MOS/MOSX, surge-resistant RCR, small coil CW/CW-H, fuse resistors RF/RF25CC, custom milliohm LR), square-type wirewound resistors (BWRV, BGRV, BSRV) for automotive use, cement resistors (BWR, BGR, BSR, BPR), ceramic resistors (HPC, CPCN), MELF-type fixed resistors (RD41, RN41, RM41, CC), the proprietary MWS molded wirewound resistor released in 2021, and chip type current fuses (CCF). The company is IATF16949 (May 2018), ISO9001, ISO9002, QS9000, and ISO14001 certified, with products used in automotive, home appliance, AV equipment, amusement machines, and computer applications.

The business model is B2B direct sales to global electronics manufacturers, with quote-based pricing on custom and standard products and multi-year contracts. Automotive is the primary segment. The company differentiates through VOC-driven custom lead forming加工 (straight, M-type, U-type, W-type, pedestal-mounted U-type, surface mount variants) and a stated position of producing niche products exclusively available from KEC. Its distribution is concentrated through the KOA Group's global network, with stated operating geographies in Japan, the United States, and Germany. The firm maintains deep regional roots, with approximately 30% of employees from local communities, multi-generational workers, 15.4-year average tenure, and 0% new graduate turnover in 2023; it also operates an unrelated agricultural subsidiary (Asage no Sato, established December 2020) covering rice cake production, herbal medicine, mask manufacturing, and straw craft.

Name

Koa Electronics

Legal name

興亜エレクトロニクス株式会社

Website

https://koa-electronics.co.jp

Company type

Private

Founded year

1969

Operating status

Operating

Headcount range

251–500 employees

Short description

Koa Electronics is a Japanese B2B manufacturer of fixed resistors—including carbon film, metal film, cement, ceramic, MELF, and custom lead-formed variants—serving global automotive, home appliance, AV, amusement, and computer manufacturers via IATF16949-certified direct sales.

Ownership category

akta.pro rank

Product category

Passive Electronic Components (Fixed Resistors)

NAICS

Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing (334416)

SIC

Electronic Components & Accessories (3670)

akta.pro primary industry

Resistors (Fixed/Variable/Network) (HDAHANAA)

Keywords

• Fixed resistor manufacturing
• Metal film resistors
• Cement resistors
• Lead forming services
• Electronic components

Headquarters

HQ city

Nagano

HQ country

Japan

HQ region

Asia

Offices8 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Fixed Resistor Sales: Manufacturing and selling fixed resistors including carbon film, metal film, cement, and ceramic resistors. Revenue is generated through product sales to global electronics manufacturers in automotive, home appliance, AV equipment, and computer sectors.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Koa Electronics manufactures and sells fixed resistors — including lead-type fixed resistors (carbon film, metal film, cement, ceramic), square-type wirewound resistors, MELF-type fixed resistors, molded type coil fixed resistors (MWS), and chip type current fuses (CCF) — for global electronics manufacturers serving automotive, home appliance, AV equipment, amusement machine, and computer applications. The company also provides custom lead forming加工 services (straight, M-type, U-type, W-type, and surface mount variants) tailored to customer mounting requirements. Operations run across six production factories and the Fukami Innovation Lab in Nagano Prefecture, Japan, all under KOA Corporation's KOA Group umbrella.

Product overview

Koa Electronics is a lead-type fixed resistor manufacturer that produces a comprehensive portfolio of resistor products. The core product line includes carbon film resistors (CF/CFP), metal film resistors (SNF), cement resistors (BWR/BGR/BSR/BPR), ceramic resistors (HPC/CPCN), MELF type fixed resistors (RD41/RN41/RM41/CC), molded type coil fixed resistors (MWS, released 2021), chip type current fuses (CCF), and surge/pulse-resistant resistors. The company differentiates through special custom products featuring lead forming services (straight, M-type, U-type, W-type, pedestal-mounted U-type, surface mount), developed based on Voice of Customer feedback. Their products serve automotive, home appliances, AV equipment, amusement machines, computers, and other electrical applications.

Differentiator

Problem solved

Functional benefit

Products and services

• Lead-type Fixed Resistors (リード付き固定抵抗器) Main product category of fixed resistors with leads, including carbon film resistors (CF/CFP), metal film fixed resistors (SNF), small oxide metal film resistors (MOS/MOSX), power type small metal film resistors (SPR/SPRX), surge-resistant fixed resistors (RCR), metal glaze film fixed resistors, small coil resistors (CW/CW-H), fuse function coil resistors (CWFS), fuse resistors (RF/RF25CC), and custom milliohm resistors (LR). Used to limit electrical current and reduce voltage in electronic circuits across automotive, home appliance, AV equipment, amusement, and computer applications.
• Square-type Wirewound Resistors (角型巻線抵抗器) Square-type wirewound resistors including ceramic core (BWRV), glass core (BGRV), and oxide metal film (BSRV) variants. Designed for automotive applications requiring durable power-resistor performance.
• Cement Resistors (セメント抵抗器) General-purpose square-type cement resistors including BWR, BGR, BSR (oxide metal film), and BPR (square metal plate resistors) variants, used in automotive and industrial electronic applications.
• Ceramic Resistors (セラミック抵抗器) HPC (pulse/surge-resistant ceramic resistors) and CPCN (ceramic resistors) series for electronic circuits requiring resistance to pulse and surge conditions.
• MELF Type Fixed Resistors (MELF形固定抵抗器) MELF type fixed resistors including carbon film (RD41), metal film (RN41/RM41), and cross-conductor (CC) series, supplied in surface-mount device (SMD) form factor.
• MWS Molded Type Coil Fixed Resistors (MWS モールド型巻線固定抵抗器) Molded type coil fixed resistor released in 2021 as the company's proprietary in-house developed product, expanding the fixed resistor portfolio for circuit protection and current limiting.
• Chip Type Current Fuses CCF (チップ型電流ヒューズ CCF) Chip type current fuses (CCF) for circuit protection applications in electronic assemblies.
• Special Custom Products — Custom Lead Forming Services (特殊オーダーカスタム品) Custom lead forming加工 services for discrete components tailored to customer mounting requirements, including straight piece cuts, M-type, U-type, W-type, pedestal-mounted U-type (10N), clip-type W-forming, ceramic base-mounted, and surface mount variants. Developed based on customer Voice of Customer (VOC) feedback.

Quantifiable outcome

• Zero new graduate turnover in 2023 (0 out of 3 hired)
• +1 more outcomes

Named customers1 record

Segments4 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Two partnerships are on record, tiered core and minor.

• KOA Corporation (KOA株式会社)coreOthers · 3 March 2026Parent company of KOA Group (TSE Prime listed). Koa Electronics is organized under KOA Corporation as a subsidiary. KOA Corporation is the listed parent entity providing group governance and global coordination for the electronics manufacturing group.
• Sumitomo Mitsui Banking Corporation (三井住友銀行)minorOthers · 3 March 2026Supported the three-university regional revitalization project 'Shinshu Anan Town Niino FIELD CHALLENGE' organized by KOA Corporation and Koa Electronics alongside universities from Bunkyo University, Tamagawa University, and Tokyo Denki University.

Scale indicators6 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• TT Electronics: UK-based electronics manufacturer with a significant passive components division producing resistors, magnetics, and other components. Overlaps with Koa Electronics in wirewound and metal film resistor categories, particularly for industrial and automotive applications.
• Vishay Intertechnology: US-headquartered global manufacturer of discrete semiconductors and passive components including a comprehensive resistor portfolio (thin film, thick film, wirewound, power, foil). Directly competes with Koa Electronics in metal film and wirewound resistors for automotive and industrial applications.
• Yageo Corporation: Taiwan-based global leader in passive components, with one of the world's largest resistor product lines including chip, through-hole, and wirewound resistors. Directly competes with Koa Electronics across metal film, thick film, and specialty resistor categories serving automotive, industrial, and consumer customers.
• Walsin Technology Corporation: Major Taiwanese passive component manufacturer with significant resistor production including chip resistors, MELF, and leaded types. Competes with Koa Electronics in metal film and MELF-type fixed resistor categories for global electronics customers.
• Stackpole Electronics: Specialized resistor manufacturer producing chip, through-hole, and wirewound resistors for automotive, industrial, and consumer markets. Directly comparable niche-focused resistor manufacturer competing in similar product categories as Koa Electronics.

Broad incumbents

• Panasonic Industry (Passive Components): Passive components division of Panasonic producing resistors, capacitors, and inductors as part of a broad industrial components portfolio. Larger incumbent with overlapping resistor offerings including chip and metal film types serving automotive and consumer customers.
• Murata Manufacturing: Japanese global leader in passive electronic components, primarily capacitors, inductors, and sensors, with a smaller resistor portfolio. A much larger established player in adjacent passive component categories where Koa Electronics competes; offers broader portfolio solutions rather than resistor specialization.
• ROHM Semiconductor: Japanese semiconductor and passive component manufacturer with resistor offerings as part of broader electronic components portfolio. Larger established Japanese competitor with overlapping automotive and industrial customer base and broader product range than Koa Electronics.
• Samsung Electro-Mechanics: Korean passive component manufacturer producing MLCC capacitors, chip resistors, and other components at scale. A larger, broader incumbent with significant chip resistor production that competes with Koa Electronics in automotive and consumer applications.

Others

• KOA Corporation (KOA株式会社): TSE Prime-listed parent company of Koa Electronics and global passive component group with international subsidiaries. As the parent and group headquarters, it provides the closest comparable reference for Koa Electronics' market positioning, though at a much larger scale and broader product scope.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

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 Koa Electronics