Heavy Copper Printed Circuits
High Current, High-Reliability PCBs Built for Power & Performance
Heavy-copper PCBs use significantly thicker copper layers to handle high currents, improve thermal dissipation, reduce impedance, and deliver enhanced mechanical toughness in demanding environments. PICA’s heavy-copper capability supports power-electronics, automotive, industrial, and defense applications that demand more than a standard PCB.
Why Choose Heavy Copper Printed Circuits?
- Massive Current-Handling Capacity – Heavy copper layers allow high-current traces, bussing and plane structures far beyond standard boards.
- Enhanced Heat Management & Thermal Stability – Thicker copper and optimized via/plane structures pull heat from high-power components and reduce risk of thermal fatigue.
- Layer Count & Footprint Efficiency – With heavy copper, power and control circuitry can often be combined, reducing layer count and board size.
- Mechanical & Environmental Durability – Boards with heavy copper can survive thermal cycling, mechanical stress, and harsh conditions better than standard copper builds.
- Design Flexibility for Special Use Cases – Mixed copper weights on-board, heavy-copper pads and heat-sink interfacing, and strong capability for power/bus planes.
Heavy Copper Capabilities – Highlights
- Finished copper weights from 3 oz and above, with builds up to 10 oz+, 20 oz+ (depending on design).
- Heavy copper plating for via sidewalls and planes, enabling high-current through-holes and strong thermal pathways.
- Integrated heat-sink style copper elements or embedded buss plates within the PCB structure for thermal & power performance.
- Mixed copper weights on a single layer—power traces heavily plated, control signals standard copper—enabling layer-count optimization.
- Robust design workflows: early DFM for heavy copper routing, copper thickness analysis, thermal dissipation modelling and manufacturability feedback.
- Prototype to volume production scalability with heavy-copper build process controls and quality assurance.
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Global Design & Manufacturing Support
PICA supports heavy-copper builds from concept to production across global engineering and manufacturing sites. Early collaboration ensures correct copper weight selection, trace/plane geometry, thermal path definition, and manufacturable board architecture that meets high current, thermal and reliability targets.
Benefits of Heavy Copper Printed Circuits
High-Power Ready
Heavy-copper PCBs handle large current densities and high power loads with fewer constraints than standard builds—enabling durable power distribution and bus architectures.
Superior Thermal & Electrical Performance
Thicker copper lowers board impedance, improves heat spread, reduces hot spots and supports stable performance under higher duty cycles.
Reduced Board Size & Complexity
Power and control circuits can often be consolidated, layer count reduced, and board footprint minimized by leveraging heavy copper along with standard copper in hybrid layouts.
Enhanced Reliability
Heavy-copper boards are better positioned to resist thermal cycling, mechanical stress, vibration, and environmental extremes—ideal for automotive, industrial, defense, and rugged applications.
Flexible Design for Specialized Needs
From heavy-current bussing to embedded copper heat plates to hybrid copper-weights, these PCBs offer tailored solutions for emerging power systems and high-density power electronics.
Markets We Serve with Heavy Copper PCBs
Industrial Equipment & Power Conversion
Motor drives, inverters, UPS systems, welding controllers and heavy machinery require PCBs that can carry high current and tolerate harsh thermal/mechanical conditions.
Automotive & Electrification Systems
EV charging infrastructure, power-train modules, battery management systems, and vehicle power electronics leverage heavy copper for high-reliability and high-current performance.
Defense & Aerospace Electronics
Radar systems, power distribution panels, shipboard electronics, and rugged mission-critical platforms demand boards built with heavy copper to meet longevity, performance and environmental standards.
Renewables & Grid Infrastructure
Solar inverters, battery storage systems, grid power converters and renewable asset controllers require high-current PCBs capable of efficient heat dissipation and long life.
Telecommunications & Data Centres
Power distribution modules, converters for 5G/6G infrastructure, data-centre power supplies benefit from low-impedance heavy-copper boards to handle demanding loads and continuous operation.
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