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Thick-Copper PCBs

Thick copper PCBs are characterized by structures with copper thicknesses from 105 to 400 µm. These PCBs are used for large (high) current outputs and optimization of thermal management. The thick copper allows large PCB-cross-sections for high current loads and encourages heat dissipation. The most common designs are multilayer or double-sided. With this PCB technology it is also possible to combine fine layout structures on the outer layers and thick copper layers in the inner layers.

Thick cooper pcb.jpg

Performance of Thick Copper PCB: 

Thick copper PCB has the best elongation performance and is not limited by the processing temperature. It can be used in hot melt welding methods such as oxygen blowing at a high melting point and not brittle at low temperatures. Even in extremely corrosive atmospheric environments, copper PCB forms a strong, non-toxic passivation protective layer.

Advantages of Thick Copper PCB: 

Thick copper PCB is widely used in various household appliances, high-tech products, military, medical and other electronic equipment. The application of thick copper PCB makes the core component of electronic equipment products-circuit boards have a longer service life, and at the same time it is very helpful to the size reduction of electronic equipment

In PCB prototype, thick copper PCB belongs to a special technology, has certain technical thresholds and operating difficulties, and is relatively expensive. At present, in the process of PCB prototype, PCBWay can achieve 1-30 layers, the maximum copper thickness is 13oz, the minimum hole size is 0.15 ~ 0.3mm.

Check PCBWay thick PCB manufacturing capabilities in the following table:

FeatureCapability
MaterialFR-4 Standard Tg 140°C, FR4-High Tg 170°C
Min. Track/Spacing

For External layers:

4oz Cu 9mil/9mil,5oz Cu 11mil/11mil

6oz Cu 13mil/13mil,12oz Cu 20mil/32mil


For Internal layers:

4oz Cu 8mil/12mil,5oz Cu 10mil/14mil

6oz Cu 12mil/16mil,12oz Cu 20mil/32mil

Min. Hole Size10mil
Max Outer Layer Copper Weight (Finished)15oz
Max Inner Layer Copper Weight12oz
Board Thickness0.6-6mm

Surface Finishing

HASL lead free,Immersion gold, OSP, Hard Gold,Immersion Silver,Enepig
Solder MaskGreen, Red, Yellow, Blue, White, Black, Purple, Matte Black, Matte green
SilkscreenWhite, Black
Via ProcessTenting Vias,Plugged Vias,Vias not covered
TestingFly Probe Testing (Free) and A.O.I. testing
Build time5-10 days
Lead time2-3 days

More information please check here:

Thick Cooper PCB Instant Quote

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