Thick Copper PCB
Most PCBs are constructed with a 1 oz (35 um) or 2 oz (0 um) copper weight. Thick copper PCBs have a finished copper weight of more than 4 oz (140 um). The thickness of the copper allows thick copper printing circuit boards to conduct a higher current, achieve good thermal distribution and implementcomplex switches in a limited space. Heavy copper printed circuit boards are generally employed in a wide range of power electronic products and power supply systems.
China Dragon offers a thick copper PCB manufacturing service that uses copper weights of up to 15 oz (525 um).
To ensure the PCB is fabricated correctly, it is important that customers take the increased width of traces and spacing between the traces due to the increasing copper weight into consideration
Copper Weight And Min. Tracing/Spacing
| Layer | Copper Weight (oz) | Min. Tracing/Spacing (mil) |
| External layer | 4 | 8/12 |
| 5 | 10/14 | |
| 6 | 12/16 | |
| 12 | 20/32 | |
| 15 | 32/40 | |
| Internal layer | 4 | 8/12 |
| 5 | 10/14 | |
| 6 | 12/16 | |
| 12 | 20/32 |
Sample Thick Copper PCB
If you have any requirement for copper weight options which are not listed on the online quotation form, please send a quote request along with your design file to sales@pcbamfrs.com, we will get back to you .
with a custom quote accordingly.
