Heavy Copper PCBs are printed circuit boards with 3 or more ounces of finished copper in the inner and/or outer layers.
Heavy Copper PCB General Info
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
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).
Typical conductor width/spacing/thickness tolerance is +/-20%, although tighter
tolerance is achievable
Capability of Heavy Copper PCB
Base material: FR4/Aluminum
Copper thickness: 4 OZ~10 OZ
Extreme Heavy Copper: 20~200 OZ
Outline: Routing, punching, V-Cut
Soldermask: Wite/Black/Blue/Green/Red Oil
Surface finishing: Immersion Gold, HASL, OSP
Max Panel size: 580*480mm(22.8"*18.9")
Benefits of Heavy Copper PCBs
Elimination of complex wired buss configurations
Increased current carrying capacity
Increased endurance to thermal strains
Optimized use of exotic high temperature materials with lower probability of circuit failure
Ability to incorporate multiple copper weights on the same layer of circuitry (layer count reduction)
Added copper plating in the heat vias (thermal resistance reduction)
Selective areas plated with heavy copper can function as a heat sink or interface to cold plate (built-in heat sinks)
Integration of high-current circuits and control circuits on a single PCB
Please contact us for more information about heavy copper PCB and extreme heavy copper printed circuit board (heavy copper PCB).