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As industrial automation, high-power energy sectors, and advanced computing paradigms evolve, the demand for electronic assemblies capable of handling extreme current densities and thermal loads has surged. In this high-stakes technological arena, standard circuit boards fail to meet reliability limits. Thick Copper Circuit Boards (Heavy Copper PCBs), featuring copper weight ranges from 3 oz/ft² to over 20 oz/ft², have transitioned from niche components to fundamental necessities.
At the center of this electronic manufacturing paradigm is Corexis Memory Technology Co., Ltd. Established in 2016, our operation has scaled beyond its core identity as a professional DDR5 memory manufacturer. Leveraging a state-of-the-art 21,800 m² modern facility, Corexis fuses cutting-edge SMT production, hardware development, firmware optimization, and custom heavy-copper PCB design. This unified manufacturing capability allows system integrators and global OEM partners to secure robust electronic boards that display uncompromising stability under intense environmental stress.
Corexis combines specialized hardware engineering with rigorous manufacturing metrics to satisfy global procurement compliance.
A professional exploration into high-current substrates, shifting dynamics, and thermal efficiency requirements.
The transition toward electrification has placed extreme demands on printed circuit boards. Standard PCB tracking layers (1 oz/35µm copper thickness) degrade when subjected to currents exceeding several amperes. Heavy copper boards (ranging from 3 oz to 20 oz or more) integrate thick conductors to sustain high currents without generating hazardous local temperature rises.
Key drivers include:
Global procurement directors face multiple bottlenecks when sourcing heavy copper PCBs from China. The primary concern is not just the raw copper cost, but the manufacturer's ability to maintain registration accuracy on thick layers, avoid resin starvation, and perform high-quality solder mask coverage over steep conductor edges.
To mitigate risk, international procurement profiles demand:
How our technical layouts resolve critical engineering challenges across key industrial sectors.
By using heavy copper, we integrate power distribution and control circuits onto a single board. This eliminates costly busbars, reduces assembly size, and lowers contact resistance points that cause system failure.
We combine high-density SMT layout capabilities with robust heat sinks. This design satisfies high-speed DDR4/DDR5 signaling needs while routing intense power levels directly through inner thick copper cores.
Our ODM solutions, including Raspberry Pi style control boards, integrate heavy copper to maintain physical rigidity and EMI shielding in noisy industrial environments subject to continuous thermal cycling.
Mapping out next-generation manufacturing capabilities, material hybrids, and SMT developments.
Etching thick copper features requires specialized chemistry and process control. As copper thickness increases, lateral etching (undercutting) becomes more pronounced. Standard etching lines fail to preserve tight spacing. Our factory employs automated optical alignment and specialized acid etching lines to maintain minimum trace-and-space dimensions, even at 6 oz and higher weights.
Furthermore, filling the wide air gaps between thick copper tracks requires advanced resin prepregs. Standard resin systems can form voids during lamination, leading to electrical breakdown at high voltages. Corexis uses high-resin-content prepregs and customized vacuum press profiles to ensure void-free encapsulation of internal copper traces.
Modern telecommunication and server power supply architectures cannot rely solely on standard FR4 substrates. To minimize costs while meeting speed and thermal demands, Corexis engineers develop hybrid stack-ups. In these designs, high-frequency materials (such as Rogers 4350B or Rogers 4003C) are co-laminated with heavy copper power plane layers on TG170/TG180 FR4 bases. This approach delivers optimal RF performance and high-current capability in a single board structure.
Corexis applies strict verification protocols to maintain absolute reliability across all shipped batches.
To support global supply chains in highly regulated industries, our manufacturing quality control process features five primary check stages:
Answers to common industry queries regarding thick copper manufacturing and quality assurance.
Browse our broader range of SMT assemblies, RAM modules, and thermal management units.
Corexis Memory
