4 Oz Copper PCB Is a heavy copper PCB, Only 2 layer , still many PCB manufacturer can handle it ,if multilayer PCBs, inner layer is 4 oz, few PCB factory can fabricate it well . RayMing have rich experience manufacturing 4 oz PCB whatever double side or Multi-layer PCB .
4OZ heavy copper printed circuit PCB. Heavy Copper Board does not have a set of definition in IPC standard. However, peopel generally use this name to identify a printed circuit board with copper conductors 3 oz/square feet- 10 oz/square feet in inner and/or outer layers.
General Guideline for Min Spacing by Copper Weight
Cu Weight Min Recommended Space between Copper Feature
4 OZ 14 mil (0.355 mm)
If you want to produce 4 OZ PCB , Pls send your design to firstname.lastname@example.org , Get quote now !