A rigid PCB is a type of Printed Circuit Board.
A printed circuit board is an insulator board with only wiring on its surface or inside, and is the basic component on which electronic components are mounted to create an electronic circuit.
Printed circuit boards can be rigid PCB made of inflexible rigid materials or flexible PCBs made of thin and flexible materials, but rigid PCB is most commonly used.
There are several types of rigid PCB, including single-sided PCBs with a substrate on only one side, double-sided PCBs with a substrate on both sides, multi-layer through-hole PCBs with several layers of substrates stacked on top of each other, and build-up PCBs that enable high-density wiring.
Rigid PCBs are made of rigid materials and have high strength.
They also have excellent electrical characteristics and can be used in a wide range of applications, such as medical equipment, automobiles, aircraft, ships, industrial equipment, PCs, consumer electronic equipment, OA equipment, IT equipment, IC cards, digital cameras, motherboards, etc., due to their advantages such as the ability to integrate a large number of components in a small mounting area by using double-sided boards or multi-layer boards.
Rigid PCBs are PCBs consisting of a substrate (glass cloth or paper) impregnated with resin (epoxy, phenol, Teflon, BT) and prepreg (semi-hardened) and laminated with copper foil using a high-temperature, high-pressure press.
Printed circuit boards are made from copper-clad laminates with circuit patterns formed with copper foil and solder resist ink for protecting the surface of the board.
Printed circuit board types include paper phenolic, paper epoxy, glass composite, glass epoxy, silicon, and BT substrates, depending on the base material and resin that make up the copper-clad laminate. Rigid PCBs also include metal-based and ceramic substrates composed solely of aluminum and ceramics without resin.
Flame retardant and heat resistance of printed circuit boards are generally classified according to the FR (Flame Retardant) grade standard defined by NEMA (National Electrical Manufacturers Association, USA).
1. Paper Phenolic Substrates
Paper phenolic substrates are the oldest substrates in use and are made by impregnating paper with a thermosetting phenolic resin called Bakelite. It is inexpensive, but has low soldering heat resistance and flame retardance. Its drawback is that it absorbs water easily, making plating difficult. It is classified into FR-1, which has low insulation properties, and FR-2, which has high insulation properties. In case of through-hole processing, silver paste can be poured into the through-hole to make the front and back sides conductive.
2. Paper Epoxy Substrates
Paper epoxy substrates are made by impregnating paper with thermosetting epoxy resin and are classified as FR-3. Compared to paper phenol substrates, paper epoxy substrates absorb less water and have superior soldering heat resistance and electrical characteristics.
3. Glass Epoxy Substrates
Glass epoxy substrates, the most widely used type of printed circuit board, are made by impregnating epoxy resin into glass cloth made of woven glass fibers to improve flame resistance. It has high chemical resistance, and through-hole processing makes it possible to form circuits on both the front and back sides.
4. Glass Composite Substrates
Glass composite substrates are made of epoxy impregnated glass cloth combined with glass non-woven fabrics made of pressed glass fibers, and are often used as inexpensive alternatives to glass epoxy substrates.
5. Metal Base Substrates
Metal base substrates are made by coating a base metal with high thermal conductivity such as copper or aluminum with epoxy resin and then laminating it with copper foil by pressing for the purpose of heat dissipation of the substrate. The thicker the base metal, the higher the heat dissipation, but the more expensive it is.
6. Ceramic Substrates
Ceramic substrates, like metal-based substrates, are designed to dissipate heat. Silica or silicon nitride is used as the base material. Compared to metal-based substrates, ceramic substrates have a superior thermal expansion coefficient.
*Including some distributors, etc.
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Summit Interconnect is a manufacturer of custom-printed circuit boards (PCBs) and cable assemblies. The company was founded in 1991 and is headquartered in Santa Ana, California. Summit Interconnect's main activity is the design, development, and manufacturing of custom PCBs and cable assemblies that include high-density rigid, rigid-flex and flex, rf/microwave, and semiconductor. The company also offers a wide range of services, such as prototyping, testing, and assembly. Summit Interconnect's products are used by a wide range of customers, including the aerospace and defense, computing and datacom, semiconductor, and telecommunications industries.
TechnoTronix, founded in Anaheim, CA, in 2020 is a manufacturer of PCB assembly and printed circuit boards including rigid, flexible, and metal core PCB. The company's product portfolio includes surface Mount Technology (SMT) used to assemble complex electronic components, Through Hole Technology (THT) used for or secure soldering of components through pre-drilled holes and cable harnesses. The company serves markets including Automotive and Electric Vehicles, Renewable Energy and Energy Storage and Electronics and IT Infrastructure. They also offer custom packaging, warehousing, and distribution services.
Millennium Circuits Ltd, founded in 2005, based in Pennsylvania, United States, is a manufacturer and supplier of PCBs. Their product portfolio includes printed aluminum and ceramic PCBs circuit boards, and SMT stencils. The company also offers a range of PCB solutions with the cutting-edge technology of high-frequency laminate, microwave circuits, good quality control, technical support, and ISO certifications. The products have multiple applications in medical instrumentation, test, and measurement, LED lighting, automotive, consumer electronics, marine, and industrial equipment, as well as electronic and manufacturing industries.
OKI Circuit Technology Co., Ltd. is a Japanese manufacturer of printed circuit boards (PCBs) and electronic components established in 2012 and based in Tsuruoka, Yamagata. The company produces various PCBs that are able to manage high frequencies, radiation levels, currents, and speeds. These are used in automotive components, consumer electronics, medical equipment, and communication devices. Aside from its products, the company also offers custom design and testing services for customers with unique project requirements.
Canon Components, Inc., established in 1984 and headquartered in Saitama, Japan, is a manufacturer and supplier specializing in optical, imaging, and industrial products. The company’s product portfolio includes printed wiring boards, contact image sensors (CIS), medical equipment, and ink cartridges and ink tanks. These products are utilized by various sectors, including consumer electronics, industrial automation, printing and imaging, scientific research, and healthcare and medical. The company is expanding its network both locally and internationally, with production bases in Vietnam and Thailand.
Colibrys, a joint company established in 2001 and headquartered in Yverdon-les-Bains, Switzerland, is a manufacturer, designer, and supplier of micro-electro-mechanical system sensors and electronic machines. The company offers a wide range of products including mechanical power transmissions, power generation systems, and seismic sensors. These products are used in industries such as aerospace, defense, energy, and transportation. Their products are utilized for various applications including measuring acceleration, inclination, and seismic activity, enabling data collection for various critical applications. The company also offers services such as aerial refueling and air delivery systems.
Hokuriku Electric Industry Co. LTD., founded in 1943 and headquartered in Toyama, Japan, is a manufacturer and supplier of electronic components. Some of its products include circuit modules, fixed resistors, printed circuit boards, variable resistors, and NTC Thermistors, and it has eight domestic affiliate companies and 11 overseas affiliate companies, including HDK America Inc., and HDK China Ltd. The company is ISO 14001 certified, and it is working on producing products that are RoHS compliant. Its net sales for the 2022 fiscal year were 45.46 billion Japanese Yen, which was a 5.01 billion YoY increase from 2021.
Meiko Corporation is a Japanese company headquartered in Ayase, Kanagawa Prefecture. The company designs and manufactures printed circuit boards primarily for the automotive and telecommunications industries, as well as for home appliances, medical equipment, and robotics. Meiko designs advanced PCBs and related parts and offers comprehensive electronic manufacturing services (EMS) for electronics. EMS services cover each step from pattern design (CAD) through tool inspection, assembly, and quality inspection. Meiko is the largest manufacturer of circuit boards specializing in cellular phone and automative markets.
Sierra Circuits, Inc., established in 1986, is a company based in Sunnyvale, United States, as a manufacturer of printed circuit board (PCB) fabrication and assembly services and High-Density Interconnect (HDI) technology. Sierra Circuits is proficient in managing all facets of PCB manufacture, encompassing PCB layout and design, as well as assembly and manufacturing processes. This offering provides consumers with unparalleled quality, dependability, and a centralized support system. Sierra Circuits primarily creates expedited printed circuit boards (PCBs) and medium-scale production runs. The company's main objective is to ensure the delivery of PCBs of the highest quality within the shortest possible timeframe.
Shenzhen Kinwong Electronic Co., Ltd., established in 1993 and headquartered in Shenzhen, China, is a manufacturer that specializes in the development and production of printed circuit boards. The company offers a range of products, including conventional PCBs, flexible PCBs, RF PCBs, rigid-flex PCBs, and metal-base PCBs. It also offers engineering and design services to support customers in the development of its electronic products. Its products are used in applications where space is limited and high reliability is required. The company has achieved ISO9001:2015 and IATF16949:2016 certifications. It serves industries such as automotive, medical devices, aerospace, IoT, energy, and more.
Cicor Group, established in 1966 and headquartered in Bronschhofen, Switzerland, is a manufacturer of household appliances, electrical equipment, and electronics. The company offers a wide range of products and services in the field of electronic solutions, including printed circuit board assembly, system assembly and box building, switchgear cabinet construction, cable assembly, and more. It also offers tool design and fabrication, plastic injection molding, and medical devices. Its products are used to control electrical equipment in industrial settings. The company has achieved ISO 9001 and ISO 14001 certification. It serves a range of industries, including medical, industrial, aerospace, and defense.
MOKO Technology was founded in 2006 and is a PCB and PCBA manufacturer headquartered in Shenzhen, China. The company specializes in PCB design, PCB fabrication, and PCB assembly. It also offers various services for electronic manufacturing, including electronic assembly, rapid prototyping, and lifecycle management. The company operates a PCB assembly facility that offers surface mount, through-hole, and mixed technology assembly, along with component sourcing, testing, and quality control services. It complies with ISO 9001:2015, ISO 14001, RoHS, and UL quality standards and serves various industries, including automotive, medical, consumer electronics, renewable energy, and telecommunications.
ABL Circuits Ltd is a manufacturer and supplier of printed circuit boards (PCB) founded in 1983 and headquartered in Hertfordshire, United Kingdom. The company offers products such as single-sided, flexible, multi-layer, rigid and double-sided PCBs. Its PCBs are used in industries, including aerospace, automotive, healthcare, military and manufacturing. The company can custom-produce PCBs within 5 working days of receiving data at no premium, and can also provide an 8-hour turnaround manufacturing service if the customer wants its products faster. Its services include assembling, designing, prototyping and reverse engineering as well as top-of-the-market project management solutions such as consultancy and design management.
Ucreate PCB, founded in 2001 in China, is a professional and experienced PCB and PCB assembly manufacturer that offers one-stop service from PCB design to assembly. The company specializes in high-end and multi-layer printed circuit boards. It offers a range of services, including PCB design, fabrication, assembly, and marketing. The company has a highly professional and experienced team that is determined to provide remarkable products and services to its customers.
PCB Connect, founded in 2004, and headquartered in Stockholm, Järfälla, Sweden, is a distributor and supplier of Printed Circuit Boards. The company offers a range of PCBs, including single-sided PCBs for basic circuits, double-sided PCBs for more complex setups, and multilayer PCBs for intricate electronics. Rigid PCBs for applications with vibrations and flexible PCBs for bending needs are also provided. These products cater to industries like automotive, aerospace, medical, industrial, and consumer electronics, offering solutions for electronic circuit requirements.
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