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Double-sided multilayer FR-4

FR-4 is the designation for a flame-retardant grade of glass-fiber reinforced epoxy resin copper-clad laminate, indicating that the resin material is designed to self-extinguish once combustion has begun.

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Double-sided multilayer FR-4 not only retains the fundamental flame-retardant properties of FR-4 material but also offers more sophisticated advantages in its structural design. The double-sided design means that both the front and back sides of the copper-clad laminate are coated with copper foil, enabling a more compact circuit layout, enhancing signal transmission efficiency, and minimizing electromagnetic interference. Meanwhile, the multilayer structure builds on this foundation by further integrating alternating layers of conductive patterns and insulating materials, creating intricate interconnections across multiple circuit layers. This approach dramatically boosts wiring density, perfectly addressing the growing demand for high integration and miniaturization in modern electronic devices. As a result, double-sided multilayer FR-4 has become a staple material widely used in high-end applications such as high-performance computers, communication equipment, and aerospace technologies. Additionally, its exceptional mechanical strength, thermal stability, and ease of processing ensure that it can withstand rigorous manufacturing processes—including drilling, plating, and etching—without compromising its inherent performance. Thanks to these outstanding combined attributes, double-sided multilayer FR-4 has firmly established itself as an indispensable key material in the electronics industry.

Features: Excellent dimensional stability and dielectric properties, superior thermal performance and mechanical strength, with minimal resin buildup during high-speed drilling.

Applications: Primarily used in mobile phones, computers, testing equipment, video recorders, military gear, guidance systems, and more.

Common specifications: Base layer thicknesses: 0.8mm, 1.0mm, 1.2mm, 1.6mm, 2.0mm; Copper foil thicknesses: 18µm, 35µm, 70µm

Sheet material dimensions: 1044 x 1245 mm

Core board color: Yellow, White

Surface finishes: Tin plating, gold plating, OSP

Keywords: Double-sided multilayer FR-4

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Sichuan Haiying Electronic Technology Co., Ltd.

Address: No. 317, Mingxing Avenue, Chuanshan District, Suining City, Sichuan Province
Phone:0825-5819767
Email:hypcb@haiyingchina.com.cn

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