Heavy Copper PCB Manufacturing

Heavy Copper PCB Manufacturing & Thick Copper PCB Fabrication

When your design demands higher current-carrying capacity and reliable power distribution, thick copper PCB manufacturing is often the right approach. Among heavy copper PCB manufacturers, Sierra Assembly provides thick copper PCB fabrication support tailored to your project requirements, from prototype to production. With 30+ years of experience, ISO 9001:2015 and AS9100D certifications, ITAR registration, and U.S.-based engineering support, we help you evaluate your PCB fabrication requirements before you commit to a build.

A 24-hour turnaround may be available for qualifying projects, depending on board complexity, specifications, and production schedule. Contact Sierra Assembly Technology LLC to discuss your heavy copper PCB requirements.
                    

Heavy Copper PCB Manufacturing Capabilities

What Factors Should You Consider When Choosing PCB Copper Thickness?

• Current load: Continuous and peak current requirements for each conductor.
• Temperature rise: The maximum acceptable conductor temperature under operating conditions.
• Trace width and spacing: The layout space available for high-current paths and the required electrical clearances.
• Layer stack-up: How current is distributed between internal and external copper layers.
• Thermal management: Component heat, airflow, heat sinks, and other cooling provisions.
• Fabrication requirements: Board thickness, hole sizes, copper distribution, and circuit geometry.

Benefits of Heavy Copper PCBs

• Higher current capacity: Thicker copper can carry more current than thinner copper under comparable conditions, which suits power distribution paths, converters, and high-current control circuits.
• Improved heat conduction along copper paths: Thicker copper provides more conductive material to spread heat, although component cooling and overall board design remain important.
• Support for demanding power circuits: Heavy copper construction accommodates power traces and copper areas that may be difficult to implement with conventional copper weights.
• Stronger plated-hole connections when properly designed: Appropriate hole plating and pad design can help meet electrical and mechanical requirements for through-hole power connections.
• Greater flexibility in power circuit layout: Engineers can select copper thickness and layer arrangements to suit the required current, board space, and thermal limits.
• Fewer boards and connectors in some designs: Combining high-current and control circuitry on one board can reduce the need for separate bus bars, wiring, or additional boards, depending on the application.

Applications of Heavy Copper PCBs

• Power supplies and DC-DC converters: Carry current through conversion stages and power distribution circuits.
• Battery management and charging systems: Support power paths in battery monitoring, charging, and energy storage equipment.
• Automotive power distribution: Serve in power distribution units and other circuits designed for vehicle electrical systems.
• Industrial motor drives and controls: Accommodate high-current paths in motor control and industrial power equipment.
• Telecommunications power systems: Support power distribution and amplifier circuitry in telecommunications equipment. See our telecommunications PCB assembly services.
• Energy and power management equipment: Support selected power control and distribution applications.
• Aerospace and defense electronics: Serve in selected power supply and control applications when the board construction meets the project's applicable requirements.

Why Choose Sierra Assembly Among Heavy Copper PCB Manufacturers?

• Quality management: Our ISO 9001:2015 certification supports a documented quality management approach.
• Aerospace quality requirements: Our AS9100D certification is relevant to customers evaluating suppliers for applicable aerospace and defense projects.
• ITAR registration: Our ITAR registration is relevant to projects involving applicable controlled defense articles and technical data. Project eligibility and handling requirements must be confirmed.
• Engineering support: We can review the specifications you provide to help clarify board construction, copper thickness, and manufacturing requirements.
• Prototype-to-production support: We support projects at different development stages, subject to the requirements and scope of the order.
• Turnaround options: A 24-hour turnaround may be possible for qualifying projects after reviewing design complexity, specifications, and the production schedule.

Frequently Asked Questions