Heavy Copper PCB
Reliable Heavy Copper PCB Manufacturing for High Current & Thermal Management Applications.
Choose MOKOPCB As Your Heavy Copper PCB Manufacturer
MOKOPCB has strong expertise in the fabrication of heavy copper PCBs from 3oz to 20oz copper thickness, single layer to complex multilayer. At our company, we offer superior heavy copper circuit boards that follow rigorous quality control procedures, which are guaranteed to have a superior electrical conductivity and thermal management. Contact us today to talk about your PCB project and to get fast, competitive quote.

Our Heavy Copper PCB Fabrication Capabilities
Number of Layers | Up to 18 layers |
Board Thickness | 0.8 - 5.0 mm |
Min. Board Size | 10*10mm |
Max. Board Size | 570*1200mm |
PCB Size Tolerance | ±0.2-0.3mm |
Min. Line Spacing | 4mil - 7mil |
Copper Thickness | 3-20 oz |
Min. Mechanical Drill | 0.1 mm |
Minimum BGA pad size | 7mil |
Thermal Conductivity | 1.0~3.0W/m·k |
Solder Mask Color | Green ,Red, Yellow, Blue, White ,Black, Purple |
Surface Finishes | HASL, ENIG, OSP, and others |
Certifications | UL , IPC-6012, RoHS, ISO 9001, ISO14001 |
Why Choose MOKOPCB?

One-Stop Services
We provide a full range of PCB solutions which includes design services alongside fabrication and sourcing and delivery to save your time and expenses.

Strict Quality Control
MOKOPCB implements advanced PCB inspection techniques and follows the ISO standards to make sure that all boards fulfill strict reliability and quality requirements.

Manufacturing Expertise
MOKOPCB’s seasoned engineers and advanced facilities ensure reliable production of high-quality PCBs across diverse materials, layers, and complexities.

Production Flexibility
Our company accepts urgent orders together with customized specifications and fluctuating order quantities while maintaining quality standards and delivery timeliness.
Testing and Inspection Equipment at MOKOPCB





Applications of Heavy Copper PCB

Power Supply Systems

Solar Power Inverters

Industrial Power Equipment

Military& Aerospace Electronics
Explore All Heavy Copper PCB
Frequently Asked Questions
What is a heavy copper PCB?
A heavy copper PCB, or a thick copper PCB, refers to a PCB that has copper thickness greater than 3oz (105μm) per square foot, which is intended to handle high current flows while providing better heat management.
Can MOKOPCB manufacture mixed copper weight PCBs?
Yes, MOKOPCB holds the capability to manufacture PCBs featuring varied copper weights ascorss different layers. For instance, we can make standard 1oz copper thickness in inner layers and 3oz or more in outer layers.
When designing thick copper circuit boards, what factors should be considered?
In a heavy copper PCB design, expanded trace widths and proper heat management system are necessary. Additionally, the trace spacing should be designed larger so as to prevent short circuit.
Can you provide turnkey assembly for heavy copper circuit boards?
Of course, we provide one-stop heavy copper circuit boards solutions, from PCB fabrication, component sourcing, to assembly, and testing.
What is the lead time for heavy copper PCB production at MOKOPCB?
As a general rule, we can deliver heavy copper PCBs within 7 to 15 business days, depending on complexity of the design, the quantity ordered, and the available manufacturing capacity.
Do you offer prototyping services for heavy copper printed circuit boards?
Yes, we do offer prototyping service with fast turnaround time so customers can verify their designs before going into mass production.
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