Heavy Copper PCB Boards
Heavy Copper PCB Boards

EastwinPCBA has more than 15 years of experience crafting heavy copper PCBs. The units take more care than other types of circuit boards because of the thermal resistance presented by thick copper plates. Heavy copper PCBs handle higher rates of current than other boards, are able to resist higher temperatures for longer amounts of time and provide for stronger connection points. We manufacture units with copper components from 3 oz/ft2 to 8 oz/ft2. Contact EastwinPCBA for more information on Extreme Copper PCBs if you require more than 8 oz/ft2.

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

Applications of Heavy Copper PCBs

Demand for heavy copper-clad circuits in automotive, computer, industrial controls, and military is growing very fast. More than 80% of the existing PCB manufacturers are limited or not capable of producing reliable heavy copper printed circuit boards.

  • Solar arrays
  • Power converters
  • Power supplies
  • Heavy machinery
  • Automotive
  • Aviation
  • Welding

Projects requiring higher currents, stronger circuitry connections, and compact board designs benefits from heavy copper PCBs. The boards are capable of handling high temperatures without warping or disruption.

Heavy Copper PCB Capabilities

  • Maximum Number of Layers = 16
  • Laminate – FR-4 (All Tg Ranges), Teflon, Ceramic
  • Finished Thickness = .020″ – .275″
  • Green, Blue, Red, Black, Clear & White Solder Masks & Legend Inks
  • Minimum Soldermask Clearance – 6 mils
  • Minimum Solder Dam Width – 5.5 mils
  • Hot Air Solder Leveling (HASL)
  • Immersion Gold (ENIG) & Immersion Silver
  • Blind & Buried Vias
  • Minimum Drill Bit Hole Size = .012″
  • Minimum Holes Size – .008″ +.005″/-.008″
  • Maximum Hole Aspect Ratio = 10:1
  • Maximum Copper Weight = 6 oz. (UL Approved)
  • Controlled Impedance +/- 10%
  • Minimum Silkscreen Line Width – 8 mils

Get the benefits of selecting an established PCB manufacturer and supplier with the know-how to tackle thick copper configurations. Get in touch with EastwinPCBA today at +86-755-23573370-833, or send your PCB design file and requirements to mike@szeastwin.com.cn.

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