Suncon
Suncon (SUN Electronic Industries Corp.) is a Japanese privately held manufacturer founded in 1958 that designs and produces aluminum electrolytic capacitors — including its flagship EP-cap hybrid conductive polymer line — serving automotive OEMs and Tier 1s, consumer electronics, home appliance, and computing manufacturers globally through direct enterprise sales.
- Company typePrivate
- Founded1958
- HeadquartersShijonawate, Japan
- Headcount251–500
- GTM typeB2B
- OfferingHardware or Manufacturing
What Suncon does
Suncon (SUN Electronic Industries Corp.) is a privately held Japanese manufacturer of passive electronic components, founded in 1958 and headquartered in Shijonawate, Osaka. Its core technology is aluminum electrolytic capacitors, spanning both conventional wet-electrolyte types and, since 2000, the company's flagship hybrid conductive polymer aluminum electrolytic capacitors marketed under the EP-cap sub-brand, which combine the self-healing property of liquid electrolytes with the low equivalent series resistance (ESR) of solid conductive polymers. The product range, totaling roughly 2,352 active models as of 2026, covers surface-mount and radial-lead configurations with rated voltages from 6.3 V to 400 V, capacitances up to 15,000 µF, and category temperatures from −55 °C to +150 °C, addressing high-reliability automotive (HEV/EV electronic control units, AEC-Q200 qualified), industrial, computing, and home-appliance applications. The company also operates a Manufacturing Assembly Products (MAP) division at its Shimonoseki plant, producing DC-DC converters, AC-DC switching power supplies, high-density mounting boards, and OEM assembly services.
The company's revenue model is B2B hardware sales priced through direct quotation, supported by route sales to set makers and trading companies plus customized engineering engagement for major OEM accounts. Its go-to-market is sales-led, with direct field coverage from Osaka and a Kanto Sales Office in Saitama, supplemented by wholly-owned sales subsidiaries in Hong Kong, Shanghai, Taiwan, and Germany, plus representation in the United States through KURODA ELECTRIC U.S.A. Inc., and chip1stop as an online distributor for smaller-volume purchases. Customer concentration centers on global automotive equipment manufacturers (Tier 1s and OEMs), with secondary exposure to home-appliance manufacturers, PC/computing OEMs, and electronics-trading companies. The firm holds IATF 16949 automotive quality certification (since 2006), AEC-Q200 compliance across its automotive EP-cap line, and TISAX information-security certification obtained October 2025.
Suncon operates four manufacturing sites — Izumo and Masuda in Shimane Prefecture (capacitor mother and hybrid plants), Shimonoseki in Yamaguchi Prefecture (MAP division), and Nantong in Jiangsu, China — and reports a combined headcount of 620 employees, registered capital of ¥90 million, and no public stock exchange listing. In February 2025 the company formalized a three-year production-capacity expansion plan (2025–2027) with Shimane Prefecture and host municipalities at the Izumo and Masuda plants, encompassing equipment reinforcement and headcount additions. Ownership includes an employee stock-ownership program; the firm is led by President and Representative Director Masaki Isogaki (磯垣 匡樹) and is privately held with no disclosed parent company or external institutional investor.
Suncon firmographics
Firmographics- Name
- Suncon
- Legal name
- SUN Electronic Industries Corporation
- Website
- https://sunelec.co.jp
- Company type
- Private
- Founded year
- 1958
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- Suncon (SUN Electronic Industries Corp.) is a Japanese privately held manufacturer founded in 1958 that designs and produces aluminum electrolytic capacitors — including its flagship EP-cap hybrid conductive polymer line — serving automotive OEMs and Tier 1s, consumer electronics, home appliance, and computing manufacturers globally through direct enterprise sales.
- Ownership category
- akta.pro rank
Suncon industry classification
Industry- Product category
- Electronic Components — Aluminum Electrolytic Capacitors
- NAICS
- Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing (334416), Other Electrical Equipment and Component Manufacturing (3359), Printed Circuit Assembly (Electronic Assembly) Manufacturing (334418)
- SIC
- Electronic Components & Accessories (3670), Electronic Components, Nec (3679), Electronic & Other Electrical Equipment (No Computer Equip) (3600)
- akta.pro primary industry
- Capacitors (Ceramic/Film/Electrolytic/Tantalum/Supercapacitors) (HDAHANAB)
- akta.pro secondary industry
- Power Electronics Manufacturing (Inverters/DC-DC/Onboard Chargers) (IMACACAD)
Keywords
Where Suncon is headquartered
LocationHeadquarters
- HQ city
- Shijonawate
- HQ country
- Japan
- HQ region
- Asia
Offices11 records
Markets served
Suncon business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Supply Chain, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- Aluminum Electrolytic Capacitors: Design, manufacture, and sale of aluminum electrolytic capacitors including hybrid conductive polymer type (EP-cap). Sold to automotive OEMs, Tier 1 suppliers, consumer electronics manufacturers, and PC-related companies globally.
- DC-DC Converters and AC-DC Power Supplies: Design, manufacture, and sale of power conversion products including DC-DC converters and AC-DC switching power supplies. Manufactured primarily at the Shimonoseki factory.
- High-density Mounting Boards and Custom Electronics Manufacturing: Design, manufacture, and sale of high-density mounting substrates and OEM assembly services. Provides one-stop service from material procurement through finished product assembly.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | No public pricing — B2B direct sales model with quotation-based pricing |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels5 records
Suncon product offering
Product offeringCore offering
Suncon designs, manufactures, and sells aluminum electrolytic capacitors — including the proprietary EP-cap hybrid conductive polymer line first mass-produced in 2000 — alongside DC-DC converters, AC-DC switching power supplies, and OEM assembly services including high-density mounting boards. The company sells these electronic components primarily to automotive equipment manufacturers, home appliance makers, PC/computing OEMs, and camera/imaging electronics firms through direct sales and regional sales subsidiaries worldwide.
Product overview
Suncon (SUN Electronic Industries Corp.) is a manufacturer of aluminum electrolytic capacitors with two main product lines: EP-cap hybrid conductive polymer capacitors (industry-first mass-produced in 2000) and standard aluminum electrolytic capacitors. The EP-cap line includes surface mount and radial lead types across 20+ series with temperature ratings from 105°C to 150°C for automotive applications including hybrid and electric vehicles. Standard aluminum electrolytic types span both CE series (surface mount) and ME series (radial lead) for consumer electronics and industrial use. Additionally, the MAP division at the Shimonoseki factory produces DC-DC converters, AC-DC power supplies, and provides OEM assembly services including high-density mounting boards and complete product assembly.
Differentiator
Problem solved
Functional benefit
Brands
- EP-cap: Conductive polymer hybrid aluminum electrolytic capacitor product line - the company's flagship product technology first mass-produced in 2000.
Products and services
- Aluminum Electrolytic Capacitors (Standard and EP-cap Hybrid) Suncon's primary product line comprising both standard aluminum electrolytic capacitors (CE series for surface mount, ME series for radial lead) and the proprietary EP-cap hybrid conductive polymer capacitors combining liquid electrolyte self-healing with solid polymer low-ESR characteristics. Available across 2,352 active product models with rated voltages from 6.3V to 400V, capacitances up to 15,000μF, and category temperatures from -55°C to +150°C. AEC-Q200 compliant variants serve automotive ECU, HEV/EV inverter, and powertrain applications; standard variants serve consumer electronics, home appliances, and computing equipment.
- DC-DC Converters Power conversion products designed and manufactured by the MAP Division at the Shimonoseki factory for electronics manufacturers, including camera, surveillance, and imaging customers.
- AC-DC Switching Power Supplies Switching power supplies designed and manufactured by the MAP Division at the Shimonoseki factory for electronics OEMs, including LCD projector power supplies.
- OEM Assembly and High-Density Mounting Boards Custom electronics manufacturing services including high-density mounting substrates and full product assembly from material procurement through finished product, provided as a one-stop design-to-production service by the MAP Division at the Shimonoseki factory for electronics OEMs.
Quantifiable outcome
- EP-cap capacitors achieve 2,000–10,000+ hours endurance at rated temperature, outperforming conventional electrolytic alternatives
- +2 more outcomes
Companies that use Suncon
Customer profileNamed customers5 records
Segments4 records
Ideal customer profiles4 records
Suncon technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Suncon partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- chip1stopminorchip1stop is listed as an online distributor for SUNCON aluminum electrolytic capacitors. Provides e-commerce channel for engineers and smaller manufacturers to purchase products.
Scale indicators8 records
Recent moves9 records
Expansion highlights6 records
Suncon competitors and assessment
Company assessmentDirect peers
- Nippon Chemi-Con: Major Japanese aluminum electrolytic capacitor maker directly competing with Suncon in standard, hybrid conductive polymer, and high-reliability automotive capacitors for power electronics and industrial applications.
- Lelon Electronics: Taiwan-based aluminum electrolytic capacitor specialist producing SMD, radial lead, and snap-in types for automotive, telecom, and consumer applications — a regional-scale direct competitor in the same commodity-to-mid-tier hybrid capacitor space.
- Nichicon: Japan's largest dedicated aluminum electrolytic capacitor manufacturer, with deep overlap across hybrid polymer, SMD, radial lead, and AEC-Q200 automotive-grade product lines serving the same HEV/EV, consumer, and industrial customers as Suncon.
- Rubycon: Japanese specialty aluminum electrolytic capacitor manufacturer focused on miniaturized and high-reliability parts for consumer electronics, automotive, and industrial customers — directly comparable to Suncon's CE and EP-cap lineups.
- Würth Elektronik: German electronic components manufacturer with a significant aluminum electrolytic capacitor and polymer hybrid capacitor line, serving European automotive and industrial customers where Suncon also pursues accounts via its European sales subsidiary.
- Panasonic Industry: The industrial electronic components arm of Panasonic, producing aluminum electrolytic capacitors (including hybrid polymer types) alongside a much broader passive component portfolio, directly contesting Suncon in automotive and consumer power-electronics designs.
Broad incumbents
- KEMET (Yageo): Global capacitor manufacturer (KEMET brand under Yageo) producing aluminum electrolytic, tantalum, ceramic, and film capacitors with strong automotive electronics exposure — a broad incumbent competing with Suncon in automotive-grade passive components.
- TDK Corporation: Global Japanese electronic components giant spanning capacitors, inductors, sensors, and power-electronics modules for automotive, industrial, and consumer markets — overlapping with Suncon's customer base and product categories as a broad portfolio incumbent.
- Vishay Intertechnology: Large global manufacturer of discrete semiconductors and passive components including aluminum electrolytic capacitors, serving automotive, industrial, computing, and consumer end-markets directly comparable to Suncon's diversified vertical mix.
- Murata Manufacturing: Largest Japanese passive electronic component manufacturer, dominant in MLCCs but expanding into other capacitor chemistries and power-electronics modules — a broad incumbent whose scale and adjacent technologies shape the competitive landscape for Suncon.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
Suncon social profiles
Digital presenceSuncon compliance and trust
Trust signalCompliance2 records
Suncon financial estimates
Financial estimateRevenue estimate
Valuation estimate
Suncon leadership team
Management profileNumber of profiles
Profiles7 records
Suncon subsidiaries and ownership
Company hierarchySubsidiaries4 records
Suncon funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Suncon 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 Suncon
What does Suncon do?
Suncon designs, manufactures, and sells aluminum electrolytic capacitors — including the proprietary EP-cap hybrid conductive polymer line first mass-produced in 2000 — alongside DC-DC converters, AC-DC switching power supplies, and OEM assembly services including high-density mounting boards. The company sells these electronic components primarily to automotive equipment manufacturers, home appliance makers, PC/computing OEMs, and camera/imaging electronics firms through direct sales and regional sales subsidiaries worldwide.
Is Suncon a public or private company?
Suncon is a private company. It is classified as family owned and is currently operating.
When was Suncon founded?
Suncon was founded in 1958. It employs 251 to 500 people.
Where is Suncon based?
Suncon is headquartered in Shijonawate, Japan, in the Asia region.
How does Suncon make money?
Three revenue lines are on record. Aluminum Electrolytic Capacitors are the primary driver. The others are DC-DC Converters and AC-DC Power Supplies and high-density Mounting Boards and Custom Electronics Manufacturing.
Who are Suncon's main competitors?
Direct peers on record are Nippon Chemi-Con, Lelon Electronics, Nichicon, Rubycon, Würth Elektronik and Panasonic Industry. Broad incumbents are KEMET (Yageo), TDK Corporation, Vishay Intertechnology and Murata Manufacturing.
Does Suncon have an API?
No public API is recorded for Suncon.
What industry is Suncon in?
Suncon's product category is Electronic Components — Aluminum Electrolytic Capacitors. Its primary akta.pro industry code is HDAHANAB, Capacitors (Ceramic/Film/Electrolytic/Tantalum/Supercapacitors), with a secondary code of IMACACAD, Power Electronics Manufacturing (Inverters/DC-DC/Onboard Chargers). Its NAICS code is 334416 and its SIC code is 3670.