The base plate of the Printed Circuit Board refers to the basic material that constitutes the PCB, which determines the performance and scope of application of the PCB. The following are several common PCB substrate materials:
1, FR-4 plate
FR-4 sheet is a very common epoxy resin substrate with good mechanical and dielectric properties and high stability, so it is widely used. It is suitable for most general electronic applications, including medium and high frequency electricity
Circuit and power supply circuit, etc.
2, aluminum substrate
Aluminum substrate, also known as metal-clad copper plate, has a good heat dissipation function. Its single-panel structure is generally composed of three layers, which are the insulation layer, the circuit layer (copper foil) and the metal base. Aluminum substrate is mostly used
Lighting products and other occasions need good heat dissipation.
3. FPC board
FPC board is a kind of highly reliable and flexible printed circuit board. With polyimide or polyester film as the base material, it has the characteristics of high wiring density, light weight, thin thickness and good bending. FPC board main
It is used in high-end products such as mobile phones and hard drives because it can adapt to complex bending and folding.
4. Paper substrate
Paper substrate is a relatively cheap substrate material with good insulation and machinability. It is suitable for less demanding products, such as some simple electronic devices and prototyping.
5, glass fiber board
Fiberglass is a highly rigid substrate material with high mechanical strength and heat resistance. It is suitable for applications requiring high temperatures and high frequencies, such as some electronic devices in the military and aviation fields.
6, Polyimide (Polyimide)
Polyimide has excellent high temperature resistance and chemical corrosion resistance, as well as good dimensional stability and flexibility. It is commonly used in flexible circuit boards and applications in high temperature environments.
7. FR-1 and FR-2 plates
FR-1 and FR-2 sheets are similar materials to FR-4, made of paper and phenolic compounds, and are typically used for lower-cost single-layer PCBS. The quality of PCBS made of these materials is generally higher than that of FR4
Poor, commonly seen in medium-grade products.
8, CIM-1 and CIM-3 plates
The CIM-1 material is made of paper and two layers of glass fiber epoxy and phenol compounds and is mainly used in the development of single-layer PCB boards. Cim-3 is a white glass epoxy resin compound, mainly used in the manufacture of double layers
The PCB. Compared to FR4, CIM-3 has a lower mechanical strength, but its cost is relatively low.
9, Copper based (Copper) plate
Copper-based PCBS have excellent electrical and thermal conductivity and are suitable for high-speed RF circuits. The copper substrate can also be used as a heat sink to improve the heat dissipation performance of electronic devices.
10, Prepreg (Prepreg) plate
Prepreg is a semi-finished material made of resin and reinforcing material (such as glass fiber cloth) for the production of multi-layer PCBS. Prepreg ensures bonding strength and electrical properties between layers while simplifying the production process.
The above is the current common several PCB substrate materials, which material to choose mainly depends on the specific needs of the product and application scenarios.