Heavy Copper PCBs

Heavy Copper Circuits for High Power Applications

An increasing number of power electronics products are taking advantage of a growing trend in the printed circuit board industry.

Heavy Copper PCBs
Heavy Copper Circuits
Extreme Heavy Copper PCBs

PCBs with 3oz or more of finished copper in the inner and/or outer layers are defined as Heavy Copper. Our manufacturing facilities allow Heavy Copper boards to be produced up to 32 layers.

We also have the capability for Extreme Heavy Copper - up to 30oz per layer for 2 layer applications.

Heavy Copper and Extreme Heavy Copper PCB's offer benefits such as:

  • Increased endurance to thermal strains.
  • Higher current carrying capacity.
  • Increased mechanical strength at connector sites and in PTH holes.
  • Use of exotic materials to their full potential (i.e., high temperature) without circuit failure.
  • Reduced product size by incorporating multiple copper weights on the same layer of circuitry
  • Heavy copper plated vias carry higher current through the board and help to transfer heat to an external heatsink.
  • On-board heatsinks directly plated onto the board surface using up to 120-oz copper planes.
  • On-board high-power-density planar transformers

DK-Daleba can help you with design procedures for Heavy Copper. We can offer track and gap spacing guidance, current-carrying details and best practice guidelines for heavy copper circuits.

Please contact us for further assistance.

Heavy Copper - Introduction
arrow
Property Weight (oz) Thickness (mm)
Standard Copper ½ - 4 0.018 - 0.14
Heavy Copper 5 - 15 0.175 - 0.525
Extreme Heavy Copper 15 - 70 0.525 - 2.45
Mixed Copper Weights 1 ½ oz and 30 oz on the same layer (Double Sided) 1 ½ oz and 30 oz on the same layer (Double Sided)
  • Manufacturing panel size (minimum production is one panel) : 457mm x 610mm gross, 417mm x 570mm net (usable)
  • Each circuit to have 3mm border for routing
Extreme Heavy Copper PCB

Applications:

  • High Power Distribution
  • Planar Transformers
  • Power Converters
  • Amplification Systems
  • Solar Panel Manufactures
  • Power Controllers
  • Welding Equipment
  • Inverters
  • Bus bars - Lower Copper Weight - Lower Cost
Heavy Copper - Different copper weights on one layer
arrow
  • Selected areas of the PCB plated to different copper weights.
  • Typically used on external layers of the Heavy Copper PCB.
  • Offers package Size Reduction
  • By using different copper weights on the same layer, you can have a control section and a power section.
  • By reducing the layer count multilayer PCBs can be simplified.
Different copper weights on one layer
Heavy Copper - Benefits
arrow
  • Increased Current Carrying Capacity - In addition to this - heavy copper plated vias carry higher current through the board and help to transfer heat to an external heatsink
  • Increased Endurance to Thermal Strain - And effective heat dissipation
  • Increased Mechanical Strength at Connector Sites and in PTH holes
  • Reduced Product Size - By incorporating multiple copper weights on the same layer of circuitry
Joscar Registered