A Complete Guide to Flexible PCBs – From the Basics to Choosing
the Right Manufacturer

Flexible PCBs (FPCs) are central to the miniaturization and weight reduction of electronic devices. This guide profiles Japan-based manufacturers with demonstrated expertise across multiple industries.

By Needs
by Industries

Each company has different motivations for looking for a flexible printed circuit board (FPC) supplier. Here we introduce three FPC manufacturers, each with their own areas of expertise, according to three typical needs.

For high difficulty and special specifications
Sanyo
Sanyo Official Capture

Source: Sanyo Official Website (https://www.landingpage-synergy.com/6Ik8Yr0D/)

  • Even special specifications rejected by other companies can be discussed with our engineers from the design stage.
  • Compatible with high-definition boards with a single-sided pitch of 20 µm, enabling equipment miniaturization
  • Flexible response with in-house integrated production from a single prototype to mass production

View Official Website

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For mass production and stable supply
Mectec
Mectec Official Capture

Reference: NOK Corporation product website (https://www.mektron.co.jp/)

  • Stable quality due to our extensive delivery record for mass-produced products such as smartphones and in-vehicle products
  • In-house development of adhesives and other materials to bring out the desired characteristics
  • Wide variety of products such as high-frequency, heat-resistant, and ultra-thin, etc., to expand design flexibility

View Official Website

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For cost and quick delivery
K2
K2 official capture

Reference: Kaytwo official website (https://k2p.jp/)

  • Single-sided FPCs can be delivered in as little as two days, giving you more time to spare in your development schedule.
  • No tooling is required, greatly reducing initial costs.
  • Medium lots (500 to 1,000 sheets) are easy to keep costs down

View Official Website

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3 Recommended Flex PCBs Manufacturers

For high difficulty and special specifications

Sanyo
Captured image of Sanyo's website
Source: Sanyo's Official Website
(https://www.landingpage-synergy.com/6Ik8Yr0D/)

Key Features of Sanyo’s Flexible PCBs

Support for highly difficult specifications that were rejected by other companies

Sanyo has more than 40 years of experience as a specialized manufacturer of ultra-small and high-definition substrates, and develops and manufactures flexible substrates with a fine pitch of 20 µm on each side using subtractive and semi-additive methods. We are also able to meet high-definition specifications that are difficult for other companies to meet, such as staggered 25 µm pitch.

Microhole machining, BVH connection, etc.
Advanced processing technology

Micro hole processing using chemical etching and blind via hole (BVH) connection for high-density wiring are available. It also supports micro-hole processing from 5 µm by micro polyimide etching process, contributing to miniaturization and high density of devices.


Learn More About the
Features On The Official Website

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Sanyo's Flexible PCBs (FPCs) Specifications

Number of LayersSingle-sided, double-sided, and multilayer
Base MaterialsPolyimide, Liquid Crystal Polymer (LCP)
Surface FinishesElectrolytic gold plating: 0.03–0.5 μm
Electrolytic gold plating (nickel underlayer): 0.3–0.5 μm
Electroless gold plating (nickel underlayer): Up to 0.2 μm
Minimum Pitch: Single-sided: From 20 μm; Double-sided: From 50 μm
Minimum Finished Hole
Diameter
Top diameter: φ50μm (Bottom Diameter φ20μm)
Land diameter: approximately bottom diameter + 90 µm
Use CasesSemiconductor inspection systems; test equipment; LCD panel inspection devices.

Consultation is available from the design stage.

Sanyo supports a wide range of production needs—from prototyping to full-scale mass production.It can also be used for fine pitch and fine hole machining. We are also capable of processing that requires advanced technical skills, such as fine pitch and micro hole processing, and have achieved a wide range of support. We can flexibly meet the needs of customers who have been turned down by other companies due to strict requirements, or who want to make a prototype of a single FPC with special specifications.

Application Examples of Sanyo’s Flexible PCBs

  • Semiconductor inspection systems; test equipment; LCD panel inspection devices.
  • Substrates for magnetic heads; relay boards for optical pickups; actuator boards; relay boards for micro speakers and receivers; relay and terminal boards for other compact electronic components.
  • Interconnect cables between circuit blocks for static-flex use (where repetitive bending stress is not applied).

Visit Sanyo’s Official Website
for More Details

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Company Information – Sanyo Co., Ltd.

Address38-24 Oniyanagi, Odawara City, Kanagawa Prefecture, Japan
Response timeNot listed on the official website
CertificationsISO 9001, ISO 14001
Phone (Japan domestic only)0465-39-4141

For mass production and stable supply

Mectec
Captured image of Mectec's website
Reference: Mectec's official website
(https://www.mektron.co.jp/)

Features of Mectec's flexible printed circuit boards (FPC)

Developed in-house from the material
Achieve the desired characteristics

MECTEC was established in 1969 as a specialized FPC manufacturer in the NOK Group, and has a history of more than 55 years. Unusually for an FPC manufacturer, MECTEC develops its own adhesives and other materials, and can propose optimal combinations of materials that bring out the required characteristics such as flexibility, heat resistance, and high frequency characteristics.

By domestic and overseas production bases
Stable mass production and supply system

In addition to our Ushiku Plant in Japan, we have manufacturing facilities around the world. We have an extensive delivery record in fields that require mass production, such as smartphones, in-vehicle devices, and medical devices, and we provide products of stable quality through our global supply system.

On Mectec's official website.
for More Details

Mectec's flexible printed circuit board (FPC) specifications

Number of LayersSingle-sided, double-sided, multi-layered (flexboard)
Base MaterialsPolyimide, liquid crystal polymer, transparent polyimide, etc.
Main Product LineupLong FPC, ultra-fine FPC, automotive FPC, high-frequency FPC, heater FPC, stretchable FPC, heat-resistant FPC (up to 150°C), ultra-thin FPC, transparent FPC, FPC integral gasket, etc.
Component mounting (semiconductor devices, micro chip components, connectors, etc.)

Extensive product lineup
Expanded design flexibility

MEC-Tech offers high-frequency, heat-resistant, ultra-thin, stretchable, transparent, etc.Extensive lineup of FPC products by functionThe lineup of FPCs includes the following products, enabling the selection of the most suitable substrate for each application and environment. Our flex-resistant FPCs used in the hinges of folding smartphones are highly regarded for their technology that can withstand millions of bending cycles.

Examples of Mectec Substrate Applications
Responsiveness

  • Smartphones (e.g., hinged FPCs in folding smartphones)
  • Automotive (FPC for battery voltage monitoring for electric vehicles, etc.)
  • Camera, HDD (hard disk drive)
  • Medical devices, wearable devices, robots, etc.

On Mectec's official website.
for More Details

More about Mectec

Address1-12-15 Shiba-Daimon, Minato-ku, Tokyo (Head office)
1650-11-1 Okuharacho, Ushiku, Ibaraki, Japan (Ushiku Plant)
Response timeNot listed on the official website
CertificationsIATF 16949
Phone (Japan domestic only)03-5830-6365 (Tokyo Office)
029-830-9150 (Ushiku Plant)

For cost and quick delivery

K2
Captured image of K2's website
Reference: K2 official website
(https://k2p.jp/)

Features of K2's flexible printed circuit boards (FPC)

No tooling required, greatly reducing initial costs

KITO uses NC machines instead of dies for coverlay and external machining, which significantly reduces initial costs. Our unique know-how enables us to achieve a machining accuracy of ±0.05 mm while providing a finish comparable to that of die machining, leading to lower initial costs.

At our own factory, which also operates on Saturdays.
Minimum 2-day delivery

Our integrated in-house production system at our domestic factory enables us to deliver a single-sided flexible board in as little as two days. We also have our own copper plating and gold plating facilities, eliminating the need for subcontracting, enabling quick delivery of medium-lot products. We also operate on Saturdays, so we can flexibly respond to urgent orders.

On Kaytwo's official website.
for More Details

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K2 flexible printed circuit board (FPC) specifications

Number of LayersSingle-sided, double-sided, multilayer (3 to 8 layers)
Thinnest total thickness100µm (double-sided flexible circuit board)
Machining accuracy±0.05mm (NC machine used)
Supported substratesFlexible substrates, rigid flexible substrates, build-up substrates, fluoroplastic substrates, etc.
OtherHalogen-free compatible

Medium lot strength
Features of K2

Kay-Tu waveSpecializes in prototypes of one piece to medium-lot production (500 to 2,000 pieces)We are able to provide cost-effective and quick delivery even for medium-lot products, which tend to have high initial costs for mass-production manufacturers. Our integrated in-house production and thorough delivery management ensure delivery without any omissions during the manufacturing process.

Example of K2 substrate application
Responsiveness

  • Prototype and medium lot production of a wide variety of substrates from rigid to flexible substrates
  • Supports build-up substrates and special substrates for high-frequency applications
  • Pattern design and component mounting also available

On Kaytwo's official website.
for More Details

Call us

More about K2

Address4-13-22 Minami Terakata Higashi-dori, Moriguchi-shi, Osaka Prefecture
Response timeAlso operates on Saturdays (details to be confirmed)
CertificationsISO9001 / ISO14001 / UL certified factory
Phone (Japan domestic only)06-6998-3867

Interviews with Professionals Who Use
Flexible PCBs in Manufacturing and Design

What do experts look for when choosing flexible PCBs?
We interviewed eight professionals involved in equipment manufacturing and design to understand the criteria they prioritize when selecting a supplier or product.
If you are considering the adoption of flexible PCBs, the insights below may inform your supplier evaluation.

What’s Most Important When Selecting a Flexible PCB?

Person Icon

Technical capabilities are the top priority.

Person Icon

Durability and cost-effectiveness.

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Materials, bend ratio (R/t), and price.

Survey Target: 8 individuals with professional experience using flexible PCBs / Date Conducted: December 12, 2023 (Survey Organization: Sprint)

Among respondents, technical capabilities and performance were cited most frequently as the critical factors.
“Technical expertise” was cited as the top priority, followed by “price.”
Because deficiencies in performance or engineering precision can directly affect the final product, these points should be treated as primary evaluation criteria when selecting a supplier.

Why Do Companies Switch Flexible PCB Suppliers?

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Cost and customer service.

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Poor quality from the previous supplier.

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Prices were higher and lead times longer than competitors.

Survey Target: 8 individuals with professional experience using flexible PCBs / Date Conducted: December 12, 2023 (Survey Organization: Sprint)

Many cited cost as the primary reason for changing suppliers, with quality coming in a close second.
To ensure you get a high-quality, cost-effective PCB, it’s strongly recommended to obtain competitive quotes from multiple suppliers.

How Many Quotes Do Professionals Typically Request?

Person Icon

Three companies.

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Two companies.

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Five companies.

Survey Target: 8 individuals with professional experience using flexible PCBs / Date Conducted: December 12, 2023 (Survey Organization: Sprint)

Five out of eight respondents reported usually requesting quotes from three suppliers.
Some go further and contact up to five companies to compare pricing and lead times.
Most respondents noted that online research is their primary method for gathering supplier information

Application
: List of Companies

We introduce a selection of companies that offer Flexible PCBs (FPCs). Review the types of Flexible PCBs each company handles and the services they provide to identify suitable partners for your needs.

Aisan Electric Co., Ltd.

Aisan Denki handles Flexible Printed Circuit Boards (FPCs) manufactured using a process distinct from conventional methods. This approach allows for reductions in both manufacturing costs and environmental impact.

Address1-12-3 Sotokanda, Chiyoda-ku, Tokyo
Phone (Japan domestic only)03-3253-3611

Atsugi Micro Co., Ltd.

Atsugi Micro offers laminated patterning on substrates by processing metal and resin films. They are known for handling a wide variety of substrate types and sizes.

Address366 Hase, Atsugi-shi, Kanagawa Prefecture
Phone (Japan domestic only)046-248-7007

Art Electronics Co., Ltd.

Focusing on the quality and delivery of flexible PCBs, Art Denshi provides integrated support from design through assembly. Through detailed consultations, they can offer preliminary evaluations and propose optimal board configurations and specifications.

Address23-5 Higashimikata-cho, Kita-ku, Hamamatsu, Shizuoka (Art Techno Kaikan)
Phone (Japan domestic only)053-439-7411

Eight Kougyou Co.,Ltd.

Eight Kougyou has secured certifications from various organizations—including AXA, the Ministry of Defense, aerospace standards, and ISO standards—giving them a strong edge in board quality and responsiveness.

Address6-7-9 Tsunashima Higashi, Kohoku-ku, Yokohama, Kanagawa
Phone (Japan domestic only)045-542-0111

Enhama Co., Ltd.

With the ability to manufacture many types of flexible PCBs, Tohama can address even niche and detailed customer requirements. They produce FPCs tailored to client needs from a diverse selection of materials, configurations, and product lineups.

Address2661-19 Shinbashi-cho, Minami-ku, Hamamatsu, Shizuoka
Phone (Japan domestic only)053-442-5932

Oki Electric Cable Co.,Ltd.

Offering a wide variety of flexible PCBs, Oki Electric Cable enables you to choose a product that meets your specific objectives and challenges. Their boards are suited for numerous applications.

Address2-12-8 Shimokodanaka, Nakahara-ku, Kawasaki, Kanagawa
Phone (Japan domestic only)044-766-3171

Kansai Denshi Industry Co., Ltd.

In addition to proposing solutions tailored to specific purposes, applications, and challenges, Kansai Denshi offers integrated services covering design, manufacturing, and mounting. Single-sided and double-sided non-through-hole boards can be produced in as little as 3 days, enabling cost reductions.

Address2-22, 4-chome, Suidocho, Amagasaki City, Hyogo Prefecture, Japan
Phone (Japan domestic only)06-6437-0949

Kyoden Co., Ltd.

With a fully in-house one-stop solution model, Kyoden handles everything from product planning and development to material procurement, design, and manufacturing. They are capable of handling mass production and short lead times.

Address482-1 Mikkamachi, Minowa-machi, Kamiina-gun, Nagano Prefecture
Phone (Japan domestic only)0265-79-0012

K2 Inc.

Specializing in mid-lot production, K2 can handle orders of 500 to 1,000 Flexible Printed Circuit Boards (FPCs) more affordably and with shorter lead times than mass-production manufacturers.

Address4-13-22 Minami Terakata Higashi-dori, Moriguchi-shi, Osaka Prefecture
Phone (Japan domestic only)06-6998-3867

Cir-Tech Co., Ltd.

Circ Tec is an FPC prototyping manufacturer offering total support from board planning to evaluation. They propose utilization methods across a wide range of fields.

Address5-11-21 Handayama, Chuo Ward, Hamamatsu City,
Shizuoka Prefecture, Japan
Phone (Japan domestic only)053-522-9255

Sanesu Denki Co., Ltd.

Strong in FPC prototyping and manufacturing, Sanesu Electric utilizes router processing instead of creating molds, enabling significant cost reductions.

Address165 Nakamachi, Kodaira City, Tokyo
Phone (Japan domestic only)042-343-1831

Sunhayato Co., Ltd.

Leveraging their development and proposal capabilities, Sunhayato handles board customization and also supports self-service board manufacturing, assisting individuals and companies in producing their own boards.

Address3-40-1 Minamiotsuka, Toshima-ku, Tokyo
Phone (Japan domestic only)03-3984-7791

Sanyo Co., Ltd.

Sanyo handles the entire process from design to manufacturing in-house, allowing consultation starting from material selection and design. They can accommodate a wide range of processes requiring advanced technical skills, such as fine-pitch and micro-via processing.

Address38-24 Oniyanagi, Odawara City, Kanagawa Prefecture, Japan
Phone (Japan domestic only)0465-39-4141

Sanwa Electronic Circuit Co.,Ltd.

Through collaboration between domestic factories and affiliated overseas manufacturers, Sanwa Electronic provides various high-quality boards. They offer a one-stop service from order placement to delivery.

Address3-28-1 Kuwazu, Higashisumiyoshi-ku, Osaka-shi, Osaka
Phone (Japan domestic only)06-4301-0431

Shirai Electronics Industrial Co., Ltd.

Shirai Electronics offers flexible responses regarding delivery times, board types, and support content. They produce transparent Flexible Printed Circuit Boards (FPCs) using a special ultra-thin polyethylene base material.

Address46-2 Minami-Hirocho, Umezu, Ukyo-ku, Kyoto-shi, Kyoto
Phone (Japan domestic only)075-861-8100

Signus Inc.

Signus allows customers to select the optimal production site based on needs such as delivery time and cost. They provide support from design to mounting, tailored to the situation.

Address49-11 Katsuranozato-cho, Nishikyo-ku, Kyoto, Japan
Phone (Japan domestic only)075-383-5747

SystemGear Co.,Ltd.

SystemGear offers full support from PCB mounting and assembly to final product inspection. They can deliver fully assembled PCBs with just one order and also support small-batch prototyping, mass production, and component-supplied assembly.

AddressTakarazuka Technical Center, 1-7-11 Takashi, Takarazuka, Hyogo, Japan
Phone (Japan domestic only)0797-74-0621

Shinko Shashin Service Co., Ltd.

Shinko Shashin Service offers integrated services from board production to component mounting. With decades of experience since its founding in 1977, the company can support even specialty boards starting from single prototypes.

Address4363-18 Ikebe-cho, Tsuzuki-ku, Yokohama City, Kanagawa Prefecture
Phone (Japan domestic only)045-933-8311

Scott Design System Co., Ltd.

Scott Design System produces Flexible Printed Circuit Boards (FPCs) under an integrated system at their company-operated factory. They handle pattern design, component mounting, and component procurement for mounting, offering one-stop, total services.

Address1-7-5 Daidori, Higashiyodogawa-ku, Osaka City, Osaka, Japan
Phone (Japan domestic only)06-6370-0861

Sumitomo Electric Industries, Ltd.

Sumitomo Electric has commercialized numerous Flexible Printed Circuit Boards (FPCs) with added functionalities. They offer products like high-frequency flexible printed circuit boards made of fluororesin with low transmission loss in the millimeter-wave band.

AddressSumitomo Building, 4-5-33 Kitahama, Chuo-ku, Osaka-shi, Osaka
Phone (Japan domestic only)06-6220-4141

Daisho Electronics Co.

Daisho Electronics offers "High-Density Flex-Rigid Boards," which integrate Flexible Printed Circuit Boards (FPCs) and build-up boards. This eliminates the need for connectors, enabling thinner and smaller designs.

Address2-16-5 Denenchofu, Ota-ku, Tokyo, Japan
Phone (Japan domestic only)03-3722-2151

Taiyo Industry Co.

Taiyo Industry caters to a wide range of needs, from standard Flexible Printed Circuit Boards (FPCs) to high-functionality FPCs. They have established an integrated FPC production system capable of handling everything from rapid prototyping to mass production.

Address661 Arimoto, Wakayama City, Wakayama Prefecture
Phone (Japan domestic only)073-431-6311

Denshi-Gihan Co., Ltd.

Offering a one-stop service from artwork design to parts procurement, assembly, and packaging, Denshi Gihan supplies not only within Japan but also internationally—including deliveries to Hong Kong and other countries.

Address62-8, Toyotsu-cho, Suita-shi, Osaka
Phone (Japan domestic only)06-6386-0401

Mectec (formerly Mectron Japan)

As a subsidiary of the NOK Group, MECTEC Corporation is engaged in integrated production of high-performance FPCs in Japan and overseas. With technologies such as ultra-thin, high-flexibility, and high-frequency compatibility, MECTECH responds to needs in various fields such as smartphones, automotive, and medical devices, and achieves high quality and short delivery times.

Address1-12-15 Shiba Daimon, Minato-ku, Tokyo, Japan
Phone (Japan domestic only)029-830-9150

Nitto Denko Corporation

Leveraging its strength as a manufacturer of special and functional materials, Nitto Denko caters to special specifications—such as environmentally friendly, halogen-free flexible PCBs.

AddressGrand Front Osaka Tower A, 33F, 4-20 Ohfuka-cho, Kita-ku, Osaka City, Osaka
Phone (Japan domestic only)06-7632-2101

Hakkoh Denshi Co., Ltd.

Hakkou Denshi offers flexible PCBs suited for various applications. They also provide solutions that reduce cost and labor, such as boards designed for automated assembly and those pre-processed for bending.

Address2-17-2 Mizuhai, Higashi-Osaka City, Osaka, Japan
Phone (Japan domestic only)072-962-0301

Fujikura Ltd.

Fujikura supplies a wide range of flexible PCBs in various shapes, including ultra-fine, long-length types and boards with pre-mounted components to accommodate unique designs.

Address1-5-1 Kiba, Koto-ku, Tokyo, Japan
Phone (Japan domestic only)03-5606-1030

Fuji Print Industrial Co., Ltd.

Specializing in advanced printed circuit board manufacturing, Fuji Print Kogyo supports flexible PCBs based on polyimide, polyester, and liquid crystal polymer substrates.

Address315-11 Shimoongata-machi, Hachioji City, Tokyo, Japan
Phone (Japan domestic only)042-650-8181

Towa Printed Circuit Co., Ltd.

By managing the entire process—from design and manufacturing to delivery—within their own facilities, Towa Printed Circuit is able to schedule production based on specifications and man-hours, ensuring short lead times.

Address5-6-5 Sanda-cho, Hachioji-shi, Tokyo
Phone (Japan domestic only)042-666-0272

Furukawa Electric Co., Ltd.

Furukawa Electric offers a diverse lineup of copper foil products for printed circuit boards. For flexible PCBs, they provide the F-WS and FWL-WS series, which are known for their excellent adhesion.

AddressTokiwabashi Tower, 6-4, Otemachi 2-chome, Chiyoda-ku, Tokyo
Phone (Japan domestic only)03-6281-8500

Fine Labo Co., Ltd.

Fine Labo specializes in YAG laser processing and prototype manufacturing of flexible PCBs, supporting multilayer boards up to 10 layers.

Address1-14-18, Osaka, Otsu-shi, Shiga
Phone (Japan domestic only)077-524-7000

PDK Co., Ltd.

With over 50 years of experience in printed circuit board manufacturing and more than 1,000 board types produced (as of January 2022), PDK has extensive know-how and a strong track record.

Address177-4 Ichinotsubo, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Japan
Phone (Japan domestic only)044-411-4991

Matsuwa Sangyo Co.

Maruwa supports the production of flexible PCBs on various scales—from development cooperation and prototyping to mass production. They also offer in-house developed FPCs with unique functionalities.

Address1624-1 Oguchi-cho, Matsusaka City, Mie Prefecture, Japan
Phone (Japan domestic only)0598-52-1855

Maruwa Co., Ltd.

Maruwa Manufacturing can manufacture and produce flexible printed circuit boards (FPCs) of various scales, from development cooperation, prototyping, to mass production. We also provide flexible substrates (FPC) with special functions developed in-house.

Address8-1 Aza-Iwai, Otonashi, Sambongi, Osaki City, Miyagi Prefecture
Phone (Japan domestic only)0229-52-2055

Meiko Electronics Co., Ltd.

By leveraging its in-house design and EMS divisions, Meiko provides proposals tailored to customer needs—from board design through assembly and product integration.

Address5-14-15 Ogami, Ayase City, Kanagawa Prefecture, Japan
Phone (Japan domestic only)0467-76-6001

Yamaichi Electronics Co., Ltd.

Yamachi Electric offers the flexible PCB “YFLEX®” which utilizes a liquid crystal polymer base film. “YFLEX®” is designed for high-frequency applications in the millimeter-wave band, as well as for high temperature/humidity and high gas-barrier environments.

AddressTechnoport Taiki Seimei Building, 2-16-2 Minami-Kamata, Ota-ku, Tokyo
Phone (Japan domestic only)03-3734-0110

Raytech Co., Ltd.

In producing fine-pitch flexible PCBs, Raytech caters to a variety of small-to-medium lot prototypes and production runs. They also offer “Flying Lead Flexible PCBs.”

AddressYaesu Ryumeikan Bldg. 6F, 1-3-22 Yaesu, Chuo-ku, Tokyo
Phone (Japan domestic only)03-6262-7875

unicraft Co., Ltd.

Unicraft provides online PCB manufacturing estimates and order placements. You can also specify whether you need Gerber data (PCB design data) created.

Address2F Yamase Building, 206-20 Sakuramiya-cho, Omihachiman City, Shiga Prefecture
Phone (Japan domestic only)0748-43-1760

ExPlus Co., Ltd.

A dedicated PCB manufacturer from Taiwan, ExPlus offers a full range of order-based services including PCB design and manufacturing.

Address3F, No.534, Sec.1, Minsheng N. Road, Guishan Dist., Taoyuan City 333, Taiwan
Phone (Japan domestic only)+886.1.3116.170

Panasonic Corporation

Known for its emphasis on heat resistance, dimensional stability, and quality, Panasonic offers the “FELIOS Series” flexible PCBs featuring three different board materials.

Address1006, Oaza-Kadoma, Kadoma City, Osaka, Japan
Phone (Japan domestic only)06-6908-1121

PCBGOGO

PCBGOGO streamlines the ordering process—no factory visits or consultations required. Simply complete the necessary information online to place your order for flexible PCBs.

Address33 Building, Longwang Temple Industrial Zone, Fuyong Street, Shenzhen, Guangdong, China
Phone (Japan domestic only)+86-755-23300601

Seika Corporation

Specializing in rigid-flex board manufacturing, Seika Sangyo caters to applications in industrial cameras, aerospace electronics, medical devices, communication base stations, railways, and wearable devices. They focus on small-lot, multi-product production and also manufacture boards using special materials.

Address3-3-1 Marunouchi, Chiyoda-ku, Tokyo (Shin-Tokyo Building)
Phone (Japan domestic only)Not listed on the official website

Konica Minolta Mechatronics Co., Ltd.

Utilizing SMT assembly lines, 3D AOI, 3D SPI, in-house simple AOI devices, flow soldering tanks, bench-top soldering robots, and trace soldering equipment, Konica Minolta Mechatronics achieves highly efficient PCB assembly.

Address2, Higashi-Akado, Yawata-cho, Toyokawa-shi, Aichi, Japan
Phone (Japan domestic only)0533-88-7661

Techno Circuit Co., Ltd.

They manufacture four types of flexible PCBs: single-sided, double-sided, multilayer, and rigid-flex. With support for various layer counts and pitches, they can produce rigid-flex boards from 2 to 8 layers on a single side.

Address13-1 Higashifudatsu-cho, Higashikujo, Minami-ku, Kyoto, Japan
Phone (Japan domestic only)075-681-7103

System Products Co., Ltd.

Their rigid-flex boards use a 12.5μm polyimide layer to enhance flexibility. With all manufacturing processes handled in-house, their team of specialists works together—even when project details are not yet fully defined—to propose and realize optimal solutions.

Address1-16-2 Shinmeidai, Hamura City, Tokyo, Japan
Phone (Japan domestic only)042-554-5265

PC Electronics Co., Ltd.

Catering to needs ranging from a single prototype to mass production, PC Electronics maintains high quality through an integrated EMS system that covers design, development, assembly, and inspection.

Address6-19-29 Higashi-Mikuni, Yodogawa-ku, Osaka, Japan
Phone (Japan domestic only)06-6396-6314

Toshiba Hokuto Electronics Corporation

With a unified facility for design through production, Toshiba Hokuto Electronics responds quickly to demands. Their agile production line and integrated manufacturing process contribute to lower costs, and they meet a wide range of needs—from prototypes to mass production with short lead times.

AddressToshiba Building, 1-1-1 Shibaura, Minato-ku, Tokyo, Japan
Phone (Japan domestic only)03-3457-4877

Murakami Electric Industrial Co.,Ltd.

Murakami Electric Industrial Co.,Ltd. has established a total system that enables integrated in-house production at a single factory. Their high-density, multilayer press lines cater to everything from prototypes to mass production, with flexible production scheduling.

Address2-4-20, Kamihigashi, Hirano-ku, Osaka-shi, Osaka
Phone (Japan domestic only)06-6793-5546

Marutsuelec Co., Ltd.

With its own system for generating online estimates, Marutsuelec allows you to select specifications online and instantly receive an estimate. Once data is uploaded, the order is completed through a streamlined, fast process.

AddressSeiki Daiichi Building 7F, 5-2-2 Sotokanda, Chiyoda-ku, Tokyo
Phone (Japan domestic only)03-6803-0209

Inatron Co., Ltd.

Not only focused on electronic components, Inatron excels at total production services by offering comprehensive proposals that address your specific objectives. They even have sales assistants to ensure rapid response and high customer satisfaction.

Address6135-1 Minamiminowa Village, Kamiina-gun, Nagano, Japan
Phone (Japan domestic only)0265-76-3322

Howa Sangyo Co., Ltd.

Howa Sangyo Co., can produce flexible PCBs starting from a single prototype. In addition to prototype processing using new technologies, they engage in technological development under the theme “From Imagination to Creation,” achieving unprecedented fine patterns with etching and additive methods.

Address2F Omori Building, 13-1 Ichiyadai-cho, Shinjuku-ku, Tokyo
Phone (Japan domestic only)03-6273-0090

OKI Circuit Technology Co., Ltd.

Designated as a certified factory by the Ministry of Defense and JAXA, OKI Circuit Technology is known for its quality management system. They have built up extensive simulation and design know-how and provide high-quality, one-stop solutions.

Address1-15-68, Takarada, Tsuruoka-shi, Yamagata
Phone (Japan domestic only)No mention on official website

Yamashita Materials Co., Ltd.

Serving the medical, optical communications, and automotive industries, Yamashita Material supplies FPCs from its Tokyo headquarters. They can conduct nationwide business meetings via Microsoft Teams or Zoom and support everything from design and post-processing to inspection after component mounting.

Address3-5-13 Minami-Shinagawa, Shinagawa-ku, Tokyo, Japan
Phone (Japan domestic only)03-3474-0611

Cosmotec Co., Ltd.

Headquartered in Kyoto yet serving nationwide, Cosmotec Co., Ltd. is committed to high quality and continuously improving defect detection rates, ensuring the supply of superior flexible boards.

Address393 Nishikanesaki, Kanshuji, Yamashina-ku, Kyoto City, Japan
Phone (Japan domestic only)075-502-2835

Canon Components Inc.

Canon Components rigorously inspects every product with automated visual and electrical tests. With decades of experience from development through mass production, they develop products for both B2B and B2C markets.

Address3461-1 Nanamotogi, Kamisato-machi, Kodama-gun, Saitama, Japan
Phone (Japan domestic only)0495-33-3111

Shinwa Print Industry Co., Ltd.

Performing in-house design and manufacturing at their domestic facilities, Shinwa Print Industry offers integrated services from development to assembly. Their dual approach in both their factory and assembly division reduces time lags, enabling short lead times and rapid production.

Address1487-48 Kawaguchi-cho, Hachioji-shi, Tokyo, Japan
Phone (Japan domestic only)042-655-4501

Growth Inc.

With extensive experience working with many major manufacturers, Growth supports you from artwork design and high-frequency board production to circuit design assistance and bare chip assembly. Their artwork design department is composed solely of experienced hardware product developers.

AddressTaiki Seimei Yokohama Sakuragicho Bldg. 5F, 6-84-2 Ota-cho, Naka-ku, Yokohama City, Kanagawa Prefecture
Phone (Japan domestic only)045-680-4722

CMK Japan

CMK Japan offers a semi-flex product that has passed a 30‑minute continuity test between –65°C and 125°C. With operations in Japan, America, and Thailand, they are actively expanding their global presence.

Address43F Shinjuku Island Tower, 6-5-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo, Japan
Phone (Japan domestic only)Not listed on the official website

Daisho Denshi Co., Ltd.

Daisho Denshi has achieved full company certification for ISO9001 and ISO14001, and they have implemented an accreditation system for partner factories to back up quality guidance. They manage partner relationships based on ISO9001 standards to ensure high-quality product development.

Address2-16-5 Denenchofu, Ota-ku, Tokyo, Japan
Phone (Japan domestic only)03-3722-2151

Taiyo Industry Co., Ltd.

In addition to ISO9001 and ISO14001 certification, Taiyo Industry has invested in quality-checking equipment—such as automated 2D/3D coordinate measuring machines, X-ray film thickness meters, and electron microscopes—to enforce rigorous quality management.

Address661 Arimoto, Wakayama City, Wakayama Prefecture, Japan
Phone (Japan domestic only)073-431-6311

Showa Sangyo Co., Ltd.

Showa Sangyo provides a detailed schedule of lead times for its range of products—including through-hole and resin-embedded boards—making pre-order estimates easier. They refer to their equipment as “partners” and maintain them rigorously to ensure quality and safety.

Address1624-1 Oguchi-cho, Matsusaka City, Mie Prefecture, Japan
Phone (Japan domestic only)0598-52-1855

Kyoei Sangyo Co.,Ltd.

Kyoei Sangyo supports all board structures—from single-sided and double-sided FPCs to rigid-flex boards that combine rigid boards with FPCs. With options for white or black coverlay and various surface treatments, the appearance and functionality of the products can be optimized.

AddressShinagawa Seaside Canal Tower, 4-12-6 Higashi-Shinagawa, Shinagawa-ku, Tokyo
Phone (Japan domestic only) 03-4241-5511

FESE Co., Ltd.

Leveraging its extensive overseas network, FESE provides contract manufacturing for PCBs. Their multifaceted support in board procurement—including optimal factory selection, price negotiations, and local inspections—enables them to handle everything from prototyping to mass production on a single platform.

Address2-507 Shiogamaguchi, Tempaku-ku, Nagoya, Aichi, Japan
Phone (Japan domestic only) 052-837-0095

Material Kobo / TechnoFlexis

They support a wide range of services from PCB prototyping to mass production. By using a cutting method that does not rely on external dies, they help reduce development costs and aim to supply products more quickly, cheaply, and accurately than those dependent on molds.

Address6353-20 Minamiminowa Village, Kamiina District, Nagano Prefecture, Japan
Phone (Japan domestic only) 0265-77-1160

Yunika Co,.Ltd.

Yunika handles circuit design and analog/digital design as well as mechanical and enclosure design on a turnkey basis. By procuring only the essential components, they minimize waste and can source materials from authorized domestic and overseas dealers, along with providing sales and import/export support.

Address2-5-13 Imaizumidai, Hadano-shi, Kanagawa, Japan
Phone (Japan domestic only) 0463-84-7327

p-ban.com Corp.

Specializing in small-lot prototypes, P-By Dot Com performs outline processing using wood dies and laser cutting—without creating molds. With a strong track record in high-spec flexible PCBs and special FPCs, they even offer an option that allows for shipment in as little as one day from production start.

Address4F, Gobancho Hikari Bldg, 14 Gobancho, Chiyoda-ku, Tokyo, Japan
Phone (Japan domestic only) 0120-439-296

TA Chemical Co., Ltd.

Utilizing its expertise as a trading company, TA Chemical undertakes contract manufacturing of both rigid and flexible PCBs. They can handle orders ranging from small-lot prototypes to mass production, including single-layer and double-sided structures, outsourced component mounting, and rework services.

Address4F Kamiyoshi Building, 2-3-15 Koraibashi, Chuo-ku, Osaka, Japan
Phone (Japan domestic only) 06-4707-2575

Shiima Electronics Co., Ltd.

Shiima Electronics offers a one-stop solution from material procurement to module assembly. With a collaborative system among manufacturers, they provide integrated solutions from component mounting to module assembly, and are capable of custom manufacturing in partnership with equipment makers.

AddressTeika Building, 2-82 Hanasaki-cho, Naka-ku, Yokohama, Kanagawa, Japan
Phone (Japan domestic only) 045-260-1530

TRENG F Products, Inc.

As a subsidiary of Toray Engineering's 100%*, we manufacture flexible substrates and process large and precision components. Flexible substrates are manufactured using polyimide etching technology.

*Reference: TRENG F Products Corporation official website/History(https://www.treng-f-products.co.jp/aboutus/history.html)

Address6th Floor, Yaesu Ryumeikan Building, 1-3-22 Yaesu, Chuo-ku, Tokyo
Phone (Japan domestic only)03-6262-7875

Sakura Denshi

Sakura Denshi is a company that specializes in the design and manufacture of printed circuit boards. Even in the production of flexible circuit boards, the company can respond to the specifications of the client company. We can deliver prototypes in as little as two days, making us a very flexible company.

Address4 Nishinosato, Okimura, Kitanagoya, Aichi, Japan
Phone (Japan domestic only)0568-25-4811

Molex

Molex (Molex Japan, LLC) is the Japanese subsidiary of Molex, headquartered in the United States. The company offers three types of flexible printed circuit boards as interconnect solutions. The company's strength lies in its attentive and problem-solving attitude.

Address1-5-4, Fukami Higashi, Yamato-shi, Kanagawa
Phone (Japan domestic only)046-265-2428

foresight

Foresight is a company that handles FPD components and glass processing. The company has an extensive track record in supplying flexible printed circuit boards to domestic automakers, and has acquired a quality management system to provide products in accordance with customer requirements.

Address4F Yuwa Building, 3-5-2 Otsuka, Bunkyo-ku, Tokyo
Phone (Japan domestic only)03-6808-7731

Stay Electronic Equipment Co.

Stay Electronic Equipment Co., Ltd. handles everything from the design of flexible printed circuit boards to manufacturing and sales, and offers products based on its external processing technology, which is based on more than 40 years of experience. The company's FPCs are used in medical, measuring, and communication equipment.

Address3-13-11 Miyashita, Chuo-ku, Sagamihara-shi, Kanagawa
Phone (Japan domestic only)042-774-4555

Kawasaka Process Co.

Kawasaka Process Co., Ltd. is a company that focuses on board design, manufacturing and sales, and can handle a wide range of design work, including CAD Gerber data creation, film drawing, and CAM editing.

Address4-13-6 Minami Terakata Higashidori, Moriguchi-shi, Osaka
Phone (Japan domestic only)06-6991-5859

SURULUTION Co.

We are a one-stop shop for flexible circuit board design, development, prototyping, mounting, manufacturing, and sales. Depending on customer needs, the company flexibly responds to design only, short lead-time prototyping, and mass production.

Address3492-23 Arai, Ina City, Nagano Prefecture
Phone (Japan domestic only)0265-73-7679

Tanaka Giken Co.

Tanaka Giken Ltd. specializes in small and thin flexible printed circuit boards (FPCs) and provides one-stop integrated services from design and prototyping to mounting and manufacturing. We offer design proposals that meet customer needs and take total cost into consideration, and handle everything from prototyping to mass production.

Address2-53-3 Komatsubara, Zama City, Kanagawa Prefecture
Phone (Japan domestic only)046-254-4988

Nissun Corporation

Nisun Corporation specializes in the design of flexible printed circuit boards (FPCs) and metal substrates, and handles a series of processes from prototyping to mass production. We have established a manufacturing system based on certain quality standards, as manufacturing is performed at eight factories in China.

AddressKyoto Ekimae No.7 Building 6F, 499 Zaimoku-cho, Shichijo Higashi-iru, Shimogyo-ku, Kyoto-shi, Kyoto
Phone (Japan domestic only)075-365-3305

Towa Tech Co.

Towa Tech, Inc. is a company that designs and manufactures printed circuit boards and provides outsourcing services. In cooperation with domestic and overseas bases and subcontractors, the company designs and implements circuit boards in accordance with customer requirements. Cost consultation is easy, and quotation requests can be made on the official website.

Address1005-8 Morishita, Iwata City, Shizuoka Prefecture
Phone (Japan domestic only)(Printed Circuit Board Center) 0538-67-1270

Hokuyo Electronics Co.

Hokuyo Electronics Co., Ltd. is a company that mounts printed circuit boards, semiconductor components, and other electronics products, as well as wiring and assembling enclosures. The company handles mounting of one small board and one large board, mass production and high-mix low-volume production. For corporate members, the company offers NET FELLOW, a proprietary system for checking progress and inventory.

AddressShinjuku Square Tower 29F, 6-22-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo
Phone (Japan domestic only)03-3343-9613

EKLECUS Co., Ltd.

Under our integrated in-house production system, we manufacture flexible printed circuit boards, from prototypes to mass production, for both individual parts and sheets. We have obtained ISO 9001 certification, been designated as a UL-certified factory, and have established a quality control system that includes 100% visual external inspection and 100% continuity testing.

Address2775 Utsue, Kokufu-cho, Takayama City, Gifu Prefecture
Phone (Japan domestic only)0577-72-3921

Learn More About the
Flexible PCBs Basics

Flexible PCBs (FPCs) are circuit boards formed on insulated plastic films. This section introduces the fundamentals of Flexible PCBs, their history, and how they differ from other board types.

Structure of Flexible PCBs

Flexible PCBs (FPCs) are typically composed of three primary layers, and there is a wide variety of structural configurations. This section explains the construction of Flexible PCBs and the differences among common configurations.

Key Features of Flexible PCBs

Flexible PCBs are widely used in devices such as smartphones and computers. What are the two main characteristics that make flexible PCBs essential in modern electronics?

Learn About Flexible PCB Terminology and Types

The world of Flexible PCBs (FPCs) involves many specialized terms. This page explains commonly searched terms related to FPC materials and manufacturing processes—useful for readers who are new to Flexible PCBs.

What Are 2-Layer and 3-Layer FPC Materials?

3-layer FPC materials are flexible copper-clad laminates in which the base film and copper foil are bonded with adhesive. 2-layer FPC materials achieve the same integration without adhesive (adhesive-less). This section introduces three primary methods used to integrate the base film and copper foil in 2-layer FPC materials.

What Is Etching?

Etching is a core patterning process in Flexible PCB manufacturing. This section explains the process steps, types of etching, key considerations, and important technical points relevant to production.

What Is Coverlay?

The coverlay plays a vital role in protecting circuits to ensure proper functioning of flexible PCBs (FPCs). Here, we explore the different types of coverlay materials and how to choose the right one.

About FPC Copper Foil

Copper foil is a key material used in the production of flexible PCBs. In this section, we explain the types and characteristics of copper foils commonly used in FPC manufacturing.

Comparing FPC Manufacturing Methods:
Subtractive vs. Semi-Additive

Flexible PCBs can be manufactured using several methods, including the subtractive process and the semi-additive process. Understanding the pros and cons of each method is essential when discussing requirements with your manufacturer.

FPC Plating

Plating is important for both conductivity and circuit protection in flexible PCBs. This section introduces various plating methods and explains the differences between each type.

About Substrate Materials

Explains the differences between polyimide, liquid crystal polymers, and other films used as substrate materials for flexible printed circuit boards (FPCs). It is important to understand the advantages and disadvantages of each material and to select the material.

Differences in Mounting Methods: SMT vs. Through-Hole

Mounting refers to the process of attaching components to a manufactured PCB. There is a significant difference between mounting on standard PCBs and flexible PCBs, due to the unique properties of FPCs. It's important to understand these differences before outsourcing assembly.

Types of Flexible PCBs

Flexible printed circuits (FPCs) can be broadly categorized into three main types: single-/double-sided, rigid-flex, and multilayer flexible PCBs. This section outlines the primary types of FPCs and their basic characteristics.

Single-Sided / Double-Sided Flexible PCBs

These designs are relatively simple in structure. This section outlines their advantages and disadvantages.

Rigid-Flex PCBs

These combine rigid boards with Flexible PCBs, leveraging the strengths of both. We highlight the unique structure of rigid-flex and recommend typical application areas.

Multilayer Flexible PCBs

Built by stacking single- or double-sided flexible circuits to form three or more conductive layers. This section explains how multilayer FPCs differ from simpler constructions and where they are most effective.

Selecting the Right Flexible PCBs (FPCs) by
Application

Flexible PCBs (FPCs) are available in multiple configurations—single-/double-sided, multilayer, and rigid-flex. This section explains how to select Flexible PCBs for common use cases and highlights key points to review for each application.

Flexible PCBs (FPCs) for Automotive Applications

Flexible PCBs for Automotive Equipment

Automotive applications have distinct selection requirements. When choosing Flexible PCBs for vehicles, it is important to confirm whether they meet the specified criteria for automotive use. This section provides an overview of those criteria.

Medical devices Flexible substrates

Flexible PCBs for Medical Devices

For certain equipment, device reliability can be directly linked to patient safety. This section outlines how to select Flexible PCBs for medical applications and introduces recommended FPC types for medical use.

Camera Flexible substrate

Flexible PCBs for Cameras

Flexible PCBs play an essential role in digital cameras and smartphone camera modules. Because camera systems demand miniaturization and higher performance, selecting an appropriate FPC is increasingly important. This section explains selection considerations and key characteristics for camera-focused applications.

Smartphones Flexible substrates

Flexible PCBs for Mobile Devices

Smartphones integrate many components, and Flexible PCBs are a critical part of the internal architecture. This section introduces recommended FPC features for smartphones and FPC types commonly selected for mobile devices.

(Sponsored)
How to Avoid Troubles
in FPC Design and Manufacturing?

When sourcing high-precision flexible PCBs, one of the most common challenges is dealing with issues such as poor contact or connection failures. In this feature, we highlight frequent trouble cases and share key tips to help you avoid them. We also interview professionals from one of Japan’s leading manufacturers of high-precision flexible PCBs. If your company is currently exploring new flexible PCB suppliers, this is a must-read.

View Common Flexible PCB Issues and Recommended Manufacturers (Sponsored)