Green Solder Mask Aluminum / FR4 PCB Fabrication Service with Gold
Capability of Heavy Copper PCB
Base material: FR4/Aluminum
Copper thickness: 4 OZ~6OZ
Outline: Routing, punching, V-Cut
Soldermask: White/Black/Blue/Green/Red Oil
Surface finishing: Immersion Gold, HASL, OSP
Heavy Copper Board does not have a set of definition per IPC.
According to PCB industry, however, peopel generally use this name
to identify a printed circuit board with copper conductors 3 oz/ft2
- 10 oz/ft2 in inner and/or outer layers. And Extreme heavy copper
PCB refers to 20 oz/ft2 to 200 oz/ft2 printed circuit board
Heavy copper normally used for a various products but not limited
to: high power distribution, heat dissipation, planar transformers,
power convertors, and so on
Design Guide for Heavy Copper PCB
Typical conductor width/spacing/thickness tolerance is +/-20%,
although tighter tolerance is achievable.
The minimum width and thickness of a heavy copper PCB conductor is
determined primarily on the basis of the current carrying capacity
required and the maximum permissible conductor temperature rise.
A circuit board trace, depending on its size and manufacturing
process, may not be rectangular in shape. Heavy copper conductors
can significantly add to the overall board thickness.
Additive (plating) processed are preferred to subtractive (etching)
processes but are more expensive).