8-Layer Heavy Copper PCB TU-865 (TG180/TG200) Halogen-Free

This PCB is an 8-layer heavy-copper circuit board built with TU-865 high-Tg halogen-free substrate. Featuring extreme 10oz (350μm) finished copper on every single layer and a total board thickness of 4.5mm, this ultra-thick copper PCB delivers exceptional current carrying capacity and thermal dissipation performance. It adopts double-sided green solder mask with white silkscreen and premium immersion gold surface finishing. Equipped with complex manufacturing technologies including buried vias, blind vias, half-cut holes and conductive copper paste filled vias, this rigid multilayer board is engineered for harsh industrial environments and high-current power applications such as automotive electronics, server power supplies and base station infrastructure.

PCB Specifications

Artwork Format & Compliance Standard

Artwork Format: Supplied in Gerber RS-274-X, universal industrial standard for precise heavy copper fabrication.

Quality Standard: Compliant with IPC-Class-2, suitable for long-term uninterrupted operation of industrial power equipment.

Availability: Global shipping service to support international industrial and automotive procurement projects.

Introduction of TU-865 Substrate

TU-865 is a high-performance halogen-free FR-4 laminate composed of epoxy resin and E-glass fabric, developed for harsh industrial environments and high-reliability electronic applications. With a maximum Tg up to 200℃, this mid-loss material integrates phosphorus and nitrogen compounds to achieve UL94V-0 flame retardant grade without halogen, antimony and red phosphorus additives. Compatible with AOI inspection process and equipped with UV-blocking characteristics, TU-865 perfectly adapts to automated industrial production lines.

Matched with dedicated TU-865P prepreg, this material supports complex multilayer lamination. It features low thermal expansion coefficient, ultra-low moisture absorption rate, outstanding chemical resistance and superior dimensional stability. TU-865 provides excellent CAF anti-migration capability and strong tolerance for lead-free soldering thermal cycling, making it ideal for products requiring repeated high-temperature assembly and extreme environmental resistance.

Key Material Features

Key Benefits

TU-865 high-Tg halogen-free substrate delivers irreplaceable advantages for heavy copper power PCBs:

Green environmental formula: halogen, antimony and red phosphorus free, compliant with global environmental protection standards

Ultra-high Tg property resists thermal deformation during multiple high-temperature soldering processes

Low thermal expansion coefficient ensures stable dimension under severe temperature cycling

Excellent moisture and chemical resistance adapts to complex and harsh working environments

Powerful CAF resistance effectively prevents conductive anodic filament corrosion failure

Perfect compatibility with lead-free assembly processes for standardized industrial manufacturing

Typical Applications

This 8-layer 10oz heavy copper TU-865 PCB is widely applied in high-power and high-reliability industrial fields:

Automotive electronic systems and harsh environment vehicle control modules

High-power server power supply boards and energy storage management units

Telecommunication equipment and cellular base station power backplanes

Industrial heavy-current control equipment and high-power inverter circuitry

Automation industrial control boards requiring long-term continuous operation

Founded in 2003, Shenzhen Bicheng Electronics Technology Co., Ltd. is a well-established supplier and exporter of high-frequency PCBs based in Shenzhen, China. With 18 years of industry experience, the company serves global sectors including cellular base station antennas, satellite communications, high-frequency passive components, microstrip and stripline circuits, millimeter-wave equipment, radar systems, and digital RF antennas. The company’s high-frequency PCBs are primarily manufactured using three major high-frequency material brands: Rogers Corporation, Taconic, and Wangling, with dielectric constants ranging from 2.2 to 10.2. Headquartered in the economically vibrant city of Shenzhen, Bicheng PCB operates with a philosophy rooted in serving small and medium-sized enterprises, offering a wide variety of circuit boards to meet diverse market demands.

Main Business & PCB Applications

The company upholds the highest manufacturing standards to deliver products known for exceptional quality, performance, and reliability. In addition to high-frequency PCBs, Bicheng has divisions specializing in FR-4 circuit boards, flexible circuits, and metal-core PCBs, supporting everything from prototyping and small runs to mass production. The company actively develops value-added PCB solutions such as HDI, quick-turn production, impedance control, heavy copper, and backplane boards. This strategic focus enables Bicheng to offer an extended and complementary product range, forming an integrated line that spans from low-end to high-end PCBs. These circuit boards are widely used in home appliances, portable and consumer electronics, medical devices, aerospace, and telecommunications.

Main Material Partners