Thick Copper PCB

  • Thick Copper (Heavy Copper) up to 16oz
  • No minimum order requirement, High TG PCB prototyping order start from 1 pcs
  • 7/24 Live sales &tech support
  • 24 hours thick copper PCB prototype expedite services

Your Best Thick (Heavy) Copper PCB Manufacturer in China

A Thick copper PCB( also named heavy copper PCB, thick copper printed circuit board) usually refers to a PCB with finished copper thickness≥ 3 oz per square foot in the inner and/or outer layers. So for example: when you have a PCB with 2oz copper per square foot thickness we will treat it as standard copper thickness, but if your PCB is 4oz per square foot copper thickness we will we will call it is a thick copper PCB(heavy copper PCB).

Thick Copper PCB 5

Thick Copper PCB For Automotive

When electrical engineer design the thick copper PCB, what they most concern is the width and thickness of the heavy copper since this will determine how big current-carrying capacity the PCB can be. So besides the high current-carrying capacity, what else benefits does thick copper PCB have:

  • Thick copper PCBs can eliminate the wired bus configurations
  • Thick copper PCBs allow selective areas plated with Heavy copper, this can be used as a heat sink
  • Thick copper PCBs are able to resist higher temperatures for longer times and provide stronger connection points


Thick Copper PCB 7 2 Layers, 6 Oz thick (heavy) copper PCB for automotive

Thick Copper PCB (Heavy Copper PCB) Capabilities:


Thick Copper PCB Feature


Layers Counts1-32 layers
MaterialsFR-4 (All Tg Ranges), Teflon, Ceramic, Metal Core
Finished Thickness.020″ – .275″
Solder mask colorGreen, Blue, Red, Black, Clear & White Solder Masks & Legend Inks
Minimum solder mask Clearance6 mil
Minimum solder Dam Width5.5 mil
Maximum Copper weights (finished)16oz
Minimum drilling bit hole size .012″
Maximum Hole Aspect Ratio30:1
Controlled impedance± 10%
Surface finishes availableHASL( Hot Air Solder Leveling), Immersion gold( ENIG), Immersion silver


If you’re not sure whether your products require thick copper PCB (heavy copper PCB) or how thickness the copper it goes, or how a thick copper printed circuit board can do to protect your sensitive circuits, we’re more than happy to share everything we know from our 10 years experiences. we are trusted by thousands of electronic engineers all around the world through our100% quality guaranteed policy. With our 2 hours rapid response services from our 24/7 sales and tech support team and excellent after-sales service, we will be your best thick copper( heavy copper)PCB supplier in China. At Venture we can answer any thick copper PCB questions that you may have, pls feel free to contact us anytime.

Your Leading Thick Copper PCB Supplier in China

Venture has more than 10 years experiences producing thick copper PCBs, from single side PCB to multilayer PCBs, our thick copper( heavy copper) PCB have been widely used in, automotive, computer, industrial controls and military applications, such as

  • High power rectifiers
  • Power converters
  • UPS systems
  • Protection relays
  • Welding equipment
  • Radar systems

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Thick Copper PCB: 4 Layers, ENIG, 8Oz Thick Copper for Industrial Application

High current applications can bring challenges to PCB manufacturers because the loads they need to manage concerns safety, the solder mask process must be strictly controlled since the heavy copper thickness is much thicker than the substrate,it can cause issues during solder mask process, meanwhile pattern etching process, lamination and drilling process are all needed to be strictly controlled during thick copper PCB manufacturing. Venture’s10 years thick copper PCB experiences can make sure the whole processes are been handled correctly.