What are Common PCB materials and classifications?
PCB circuit board in the field of electronic manufacturing, PCB is an indispensable part. With the development of technology, the types of PCB boards and application scenarios are also expanding. In this article, we will introduce the common materials of PCB boards as well as the main classifications in detail to help you better understand and choose the right PCB board for you.
PCB board material mainly refers to the PCB substrate material, which determines the performance, stability and cost of the PCB. So let’s take a look, what are the common PCB board materials on the market as well as the classification?
(A) What are the common PCB board materials?
1、FR-4 material
FR-4 material is one of the most common PCB substrate, composed of epoxy resin and glass fiber cloth, it has excellent flame retardant properties, good electrical properties and mechanical properties, and relatively low cost, so it is widely used in a variety of electronic products.
2、CEM-1 material
CEM-1 is another common metal substrate material, which uses a single glass fiber cloth and epoxy resin composition. Compared with FR-4, CEM-1 cost is lower but the electrical and mechanical properties are slightly inferior. It is usually used in some of the less demanding performance requirements of the product.
3, aluminum substrate materials
Aluminum substrate is a metal-based PCB material, which uses aluminum as a substrate, and then covered with a layer of insulating material and conductive layer on the aluminum plate. Aluminum substrate has good thermal performance and mechanical strength, very suitable for high power density electronic products, such as LED lighting, power supply modules.
4, high-frequency board materials
High-frequency boards are PCBs designed for high-frequency circuits, such as microwave communications, satellite communications and so on. High-frequency board materials have a low dielectric constant and low dielectric loss, which can reduce attenuation and distortion in the signal transmission process.
5, flexible PCB materials
Flexible PCB board materials usually use polyimide (PI) or (PET) and other films as the substrate, with thin, light, bendable, foldable and other characteristics. It is suitable for electronic devices that require space-saving, flexible wiring or dynamic bending, such as wearable devices, cell phones, tablet PCs and so on.
(B) What are the classifications of PCB circuit boards according to the number of layers?
- Single-panel
Single-panel only one side of the conductive path, the other side of the insulating layer. This type of circuit board production is relatively simple, low-cost, mainly used in some simple electronic products.
- Double-sided boards
Double-sided boards have conductive paths on both sides, through the metallization of holes to achieve the connection of the two sides of the circuit. Double-sided boards are widely used in electronic products to realize more complex circuit design and higher integration.
- Multilayer boards
Multilayer boards consist of multiple layers of conductive paths and insulating layers alternately stacked, through the metallized holes to achieve the connection of the circuitry of each layer. With a high degree of integration and excellent electrical performance, multilayer boards are mainly used in high-end, complex electronic products.
(C) What are the classifications of PCB boards by applications?
- Civil PCB
Civil PCB boards are mainly used in consumer electronics, communications equipment, computers and other fields. These PCB boards require high performance and stability, but also need to consider factors such as cost and environmental protection.
- Industrial PCB
Industrial PCBs are mainly used in industrial automation, instrumentation, automotive electronics and other fields. These PCBs require high reliability, durability and anti-interference capability.
- Military grade PCB
Military-grade PCBs are mainly used in aerospace, military equipment and other fields. These PCB boards require high reliability, stability and environmental adaptability, but also need to meet the strict military standards and confidentiality requirements.
(d) What are the classifications of PCB circuit boards by manufacturing process?
- Reduction process
Reduction process is the traditional PCB manufacturing process, mainly through the removal of part of the conductive material on the substrate to form a conductive path. This process is mature and stable, applicable to a variety of PCB board manufacturing.
- Additive process
Additive process is a new PCB manufacturing process, mainly through the substrate layer by layer to add conductive materials to form a conductive path. This process has environmental protection, energy saving and other advantages, is one of the future development direction of PCB manufacturing technology.
Conclusion
In conclusion, PCBA (Printed Circuit Board Assembly) is a critical element in the manufacturing of electronic products. And so, it’s important to understand everything about it to choose the proper PCBA manufacturer for your business. If you’re looking for one,OEM-PCBA can be your best match, as we have decades of experience building high-quality and reliable PCBAs. Want to learn more about from us? Please contact us and Get a free quote now!
Rchangltd a one-stop solution for PCB manufacturing services with specialized support, reliable testing, and multi-functional features. In case if you have any questions, please feel free to contact us via email at sale@OEM-PCBA.COM or call us at 86/0755-89358878.