PCB Blog - Introduction of FR4 plate

FR-4 is a code for the grade of fire-resistant materials, representing a material specification where resin materials must be able to self-extinguish after combustion. It is not a material name, but a material grade. Therefore, there are many types of FR-4 grade materials commonly used in circuit boards, But most of them are composite materials made of so-called Tera Function epoxy resin, filler, and glass fiber.

FR4 plate is a composite material composed of glass fiber cloth and epoxy resin. The name FR4 refers to the material specification used for glass fiber cloth. At present, there are two main thicknesses of FR4 plates sold in the market, namely 1.6mm and 1.2mm, and their length and width can be customized according to customer needs.

FR4 plate is one of the most commonly used materials in electronic manufacturing, mainly due to its excellent electrical, mechanical, and chemical stability. In addition, FR4 plates also have extremely high insulation and heat resistance, which can withstand high temperatures and high-pressure working environments.

Characteristics of FR4 Plate

1. Excellent performance stability

FR4 plate has extremely high stability and working life and can work stably for a long time in high-temperature and high-pressure environments. Not only that, it can also resist electromagnetic interference and radiation interference, and effectively prevent a decrease in insulation performance.

2. Super strong mechanical strength

FR4 plate can resist mechanical stresses such as impact, vibration, and pressure, and have excellent acid, alkali, and corrosion resistance. This enables FR4 plates to not only work stably at ordinary temperatures for a long time but also adapt to various harsh environmental applications.

3. High-precision machining performance

FR4 plates have certain processing properties and can meet the requirements of different customers. Moreover, it can also perform various machining processes such as drilling, boring, line cutting, and chip mounting, achieving high-precision and low-error process requirements.

The purpose of the FR4 plate

FR4 plates have a wide range of applications, mainly in fields such as electronics, electrical, communication, aerospace, etc. The following are its main uses

1. Circuit board

In electronic manufacturing, FR4 plates are usually used for the manufacturing of circuit boards. It can be used as a substrate material for circuit boards, ensuring their stability and reliability.

2. Partition and isolation materials

FR4 plate has excellent insulation performance and high-temperature stability, so it can be used as a partition and isolation material in power systems. This not only ensures the electrical safety of the equipment but also avoids accidents caused by electrical faults.

3. Machine element

FR4 plate can also be used as the material of Machine elements, such as machine tool clapboard, automobile hood, etc. It has excellent mechanical properties and chemical stability and can be applied to different mechanical systems.

In summary, FR4 plate as an important electrical material, has excellent electrical properties, mechanical strength, and chemical stability, and is widely used in fields such as aerospace, communication, electronics, and electrical engineering. For electronic manufacturing enterprises, choosing high-quality FR4 plates can help them improve product quality and market competitiveness.