Heavy Copper PCB

What is the thick copper PCB

In the PCB industry, the thickness of copper is greater than 3oz are called Thick Copper PCB or Heavy
Copper PCB. Its thicker copper can conduct higher current and achieve better heat distribution. So, it
is widely used in power electronic equipment, power supply system and new energy fields, such as
electric vehicles, voltmeters, and other emerging industries.

Why Choose GoJGo Thick Copper PCB Board.

GoJGo is a thick copper PCB manufacturer with 15 years of experience in China. Professional thick copper PCB design and production, especially in thick copper PCB board stitching and solder masking process has rich experience. 

1. As for the production of heavy copper PCB, the thicker the copper is, the higher the cost will be. The cost increase is not only the raw materials but also the processing of thicker copper requires more time. Many thick copper PCB manufacturers have difficulty in controlling this aspect. GoJGo has rich experience in heavy copper PCB design. Our engineering team will evaluate the customer’s information according to our production capacity. You can design the line width and line spacing according to different copper thickness when designing PCB.

Copper Thickness Line Width(mm) Line Space(mm)
3OZ 0.2 0.2
4OZ 0.25 0.25
5OZ 0.3 0.3
6OZ 0.4 0.4
7OZ 0.5 0.5
8OZ 0.65 0.65
10OZ 0.9 0.9
If the copper thickness is very thick, you need to calculate copper resistivity and resistance of copper. You can calculate it according to the

2. In the process of drilling, GoJGo use new drilling bit each, and controls the rotating speed of the drilling machine and the plunge speed to ensure the roughness of the hole ≤25um.

3. For thick copper PCB, the requirement of hole copper is very strict. The standard of hole copper of GoJGo is IPC-600G Level 3 standard, that is, hole copper is equal or greater than 25um. Some customers also require hole copper to be equal or greater than 70um, we can also do that.

4. For more thick copper PCB manufacturers, solder mask processing is the most difficult, if the use of traditional manufacturing technology can not solve the problem of ink inhomogeneity, wrinkle, bubble, line Angle oil. Our factory uses electrostatic spraying equipment , so there will be no such problem in the process of soldering. The working principle of the equipment is to spray soldering ink on the board in a dust-free vacuum environment. The schematic diagram is as follows:

As you can see the picture as below, the surface ink is very uniform and does not wrinkle or bubble.

Benefits of Heavy Copper PCBs

With the highly development of telecommunications and electronics industry, thick copper board is widely required by PCB customer. Thick copper PCB is mainly used for central power system and power electronic devices, which is because it enables the board to conduct higher current and decrease the product size.

Normally thick copper board mean the finished copper thickness of the board is more than 4OZ(140um), this is the most important factor for us to compare the thick copper PCB from those standard PCB with 1OZ or 2OZ copper.

GoJGo produces thick copper PCBs with good performance and excellent quality. If you have other requirements, please contact us directly (tedchen163@yahoo.com), you can communicate with our online customer service directly quote online.

Free PCB Request for Quotation (RFQ)

1. You can send email to us (tedchen163@yahoo.com). We will provide you with a
solution to make your PCB cost lower.
2. GoJGo receive your order,review the first,if there are questions,we will communicate with you
the first time and answer you about the lead time.
3. Our Engineering department will review this order with relevant departments,Produced in the best
process and in the shortest time.
4. Before shipment,we will talk with you about the shipping time and shipping method.

If you would like to customize your PCB type and place an order online, please click below to request a quotation.

Free PCB quotation is just a click away.