This page explains how Heavy Copper PCB is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
A printed circuit board with copper thickness significantly greater than standard PCBs, designed for high-current applications and enhanced thermal management.
Technical details and manufacturing context for Heavy Copper PCB
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Copper WeightRequired | 1–10 oz/ft² | Thickness of copper layers expressed as weight per unit area |
| Copper ThicknessRequired | 35–350 mil | Actual thickness of copper layers in thousandths of an inchIPC-6012 |
| Current Carrying CapacityRequired | 10–100 A | Maximum continuous current that can be safely carried by copper tracesIPC-2221 |
| Thermal ConductivityRequired | 1–3 W/m·K | Ability of the PCB to conduct heat through copper layers |
| Board ThicknessRequired | 0.8–3.2 mm | Overall thickness of the finished PCB including all layersIPC-6012 |
| Minimum Trace Width | 0.15–0.5 mil | Smallest possible copper trace width achievable with heavy copperIPC-2221 |
| Operating TemperatureRequired | -40–150 °C | Temperature range within which the PCB maintains specified performance |
| Surface Finish | HASL, ENIG, OSP | ENIG for better solderability and flatnessIPC-4552 |
| Solder Mask Color | Green, Red, Blue, Black | Green is most common; others for aesthetics |
| Board Size | 100–600 mm | Maximum size limited by manufacturing capability |
| Impedance Tolerance | ±10% | Critical for high-speed signal integrityIPC-2141 |
| Dielectric Constant | 3.5–5.5 | Affects signal speed and impedanceIPC-4101 |
| Peel Strength | 1.0–1.4 N/mm | Ensures copper adhesion to substrateIPC-TM-650 |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
Commonly used trade names and technical identifiers for Heavy Copper PCB.
| pressure: | Atmospheric to 100 psi (dependent on substrate material and thickness) |
| temperature: | -40°C to +150°C (operational), up to +260°C (short-term during soldering) |
| current capacity: | Up to 100A per layer (dependent on copper thickness and trace width) |
| thermal conductivity: | 385 W/m·K (copper), enhanced heat dissipation vs standard PCBs |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
12 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.
Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.
A practical evidence checklist for RFQ preparation and supplier evaluation.
CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.
Typical copper weights range from 1 to 10 oz/ft², but some applications may require up to 20 oz/ft² or more. Always confirm the exact weight for your specific model with the manufacturer.
Relevant standards include IPC-6012 for qualification and performance, IPC-2221 for design, IPC-4552 for surface finishes, IPC-2141 for impedance, IPC-4101 for base materials, and IPC-TM-650 for test methods. These are verification references, not proof of certification.
The thick copper layers provide a low-resistance path for heat conduction, allowing efficient dissipation away from components. This reduces thermal stress and improves reliability in high-power applications.
Yes, the thick copper layers add mechanical strength, making them more resistant to vibration and mechanical stress. However, the specific performance depends on the design and materials used, so verify with the manufacturer.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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