Heavy Copper PCBs
IPC association doesn’t have a set definition on Heavy Copper PCBs. Copper foil thickness for conventional PCBs is usually 0.5-2 OZ, so we can call PCBs which use 3 OZ copper or higher in their inner and / or outer layers as Heavy Copper PCBs.
Heavy Copper PCBs are designed and manufactured in thicker copper thickness and wider traces which enables higher current-carrying capacity for applications working under high current or high voltage conditions.
Applications of Heavy Copper PCBs
With the greater performance on thermal conductivity, current-carrying capacity, mechanical strength and dissipation capability, we see the utilization of Heavy Copper PCBs growing rapidly in recent years, it has been a very important segment of our manufacturing service. They are widely applied to various fields including but not limited to:
Power Supplies
Power Converters
High Output Inverter
High Power Motor Driver
Battery Management System (BMS)
Automotive (EV, HEV etc.)
Industrial Control System
Industrial Robots
New Energy
Military
X-Parts Heavy Copper PCBs Manufacturing Capabilities
| Features | Standard | Advanced |
| Layer Count | 2-22L | ＞30L |
| Materials | High Performance FR4, Halogen-Free FR4 | |
| PCB Thickness | 0.4 MM – 7.0 MM (Depending On Layer Counts and Copper Thickness) | |
| Copper Thickness | 3 OZ – 15 OZ | |
| Minimum Track / Spacing | 0.075 MM / 0.075 MM (Depending On Copper Thickness) | |
| Maximum Dimensions | 580 MM x 1080 MM | 610 MM x 1400 MM |
| Surface Finish | ENIG, Immersion Tin, Immersion Silver, Electrolytic Gold, Gold Fingers (HASL / HASL LF Not Recommended) | |
| Minimum Mechanical Drill | 0.2 MM | |