Thick Copper PCB

Thick Copper PCB

Thick copper PCB products are used extensively in power electronic devices and power supply systems. A growing trend in the PCB industry, this unique type of heavy copper PCB features a finished copper weight of more than 4oz (140μm), compared to the 1oz (35μm) or 2oz (0μm) copper weight generally found in those with a standard PCB copper thickness.


The additional copper PCB thickness enables the board to conduct a higher current, achieve good thermal distribution and implement complex switches in a limited space. Other advantages include increased mechanical strength at connector sites, the ability to create a smaller product size by incorporating multiple weights on the same layer of circuitry and the ability to use exotic materials to their maximum capacity with minimal risk of circuit failure.

Copper PCB Manufacturing Capabilities Table

PCBCart is a highly skilled PCB manufacturer that can develop and produce a superior thick copper PCB product of the highest quality. We offer a thick copper PCB manufacturing service that uses copper weights of up to 15oz (525μm). Check our capabilities in the following table:


Feature Capability
Quality Grade Standard IPC 2
Number of Layers 2 - 24layers
Order Quantity 1pc - 10000+pcs
Build Time 2days - 5weeks
Material FR-4 Standard Tg 140°C, FR4-High Tg 170°C
Board Size Min 6mm x 6mm | Max 457mm x 610mm
Board Thickness 0.6mm - 6.5mm
Max Outer Layer Copper Weight (Finished) 15oz
Max Inner Layer Copper Weight 12oz
Min Tracing/Spacing For External layers:
4oz Cu 9mil/9mil
5oz Cu 11mil/11mil
6oz Cu 13mil/13mil
12oz Cu 20mil/32mil
15oz Cu 32mil/40mil

For Internal layers:
4oz Cu 8mil/12mil
5oz Cu 10mil/14mil
6oz Cu 12mil/16mil
12oz Cu 20mil/32mil
Solder Mask Sides As per the file
Solder Mask Color Green, White, Blue, Black, Red, Yellow
Silkscreen Sides As per the file
Silkscreen Color White, Black, Yellow
Surface Finish HASL - Hot Air Solder Leveling
Lead Free HASL - RoHS
ENIG - Electroless Nickle/Immersion Gold - RoHS
Min Annular Ring 6mil
Min Drilling Hole Diameter 10mil
Other Techniques Gold fingers
Blind/Buried Vias

Thick Copper PCB by PCBCart


Finished Copper PCBs of Superior Quality

PCBCart has a decade of experience in manufacturing and assembling high-performing standard and heavy copper PCB products that help our customers achieve their productivity and profitability goals. We make it a standard operating procedure to have our highly skilled engineers run design for manufacture on every circuit file, and address all questions and concerns before production. This helps to ensure the finished electronic boards meet your performance expectations. Our capable staff includes an in-house quality control department - we guarantee the quality of our printed circuit boards.


(Note: To ensure we can fabricate your thick copper PCB correctly, it is important to take the greater width of traces and spacing between the traces caused by the increased copper weight into consideration.)

Get Custom Quotation for Your Thick Copper PCB Project

Send your PCB design file (Gerber format preferred | Preorder Checklist) and requirements to us using this contact form, we'll review your request and quote at our top speed.


If you have any questions about our Thick Copper PCB manufacturing capabilities or your custom project required specifications are not listed in this page, please reach us using the same form. We will reply within one working day.


Helpful Resources
Relationship between Copper Weight, Trace Width and Current Carrying Capacity
Design Issues on Thick/Heavy Copper PCBs for Military and Aerospace Applications
PCB Design Tips to Better Take Advantage of PCBCart's Capabilities And Save Cost
Step-by-step Instruction On Getting Bare Board PCB Price Within Seconds

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