Heavy copper PCBs
What is a heavy copper PCB?
It is a PCB made with two or more conductive copper layers. The conductive foil appears to be thicker than on standard PCBs. The different inner layers are processed in pairs (on a core) and then bonded together using prepreg as the insulating layer. The layers are then placed in such a way that both sides of the PCB can be used to mount components with additional tracking/electrical connections on the inside of the board. Vias are used as a source of the electrical connections between the different layers of the PCB.
More and more products are using heavy copper PCBs, for example EV-chargers, high current systems and power storage systems.
Please contact your local NCAB Group company if you need further information or assistance, we are happy to help you.
|Feature||NCAB´s technical specification|
|Number of layers||4 – 22 layers standard, 30 layers advanced, 40 layers prototype, much depending on copper thickness.|
|Technology highlights||Multiple layers of epoxy glass fiber bonded together with multiple layers of copper of varying thicknesses.|
|Materials||High performance FR4, halogen-free FR4|
|Copper weights (finished)||18-210µm, advanced 1050µm / 30 Oz|
|Minimum track and gap||0,075mm / 0,075mm (very much depending on copper thickness)|
|PCB thickness||0.40mm – 7.0mm, Min thickness depending on number of layers and copper thickness|
|Maxmimum dimensions||580mm x 1080mm, advanced 610mm x 1400mm|
|Surface finishes available||HASL (SnPb), LF HASL (SnNiCu), OSP, ENIG, Immersion Tin, Immersion Silver, Electrolytic gold, Gold fingers (HASL / LF HASL not recommended)|
|Minimum mechanical drill||0.20mm|
Download our PCB design guidelines
To prevent getting it wrong from the start, we have put together our design guidelines, to use as a checklist.