Tyler Martin
    The quality of the PCBs I received from this company was outstanding. They were well-made and exceeded my expectations.
    Olivia Anderson
    I've been using this company for all of our company PCB needs for years and I have never been disappointed. Their products are always consistent and reliable, and their prices are very competitive.
    Ashley Williams
    well-packaged and arrived in perfect condition. I would definitely recommend them to anyone in need of high-quality PCBs
Contact Person : Nicole Xu
Phone Number : 0086 18565798250
Whatsapp : +008618565798250

Extra Large Heavy Copper PCB Board Custom 4 Layer PCB 4 OZ

Place of Origin China
Brand Name OminiPCB
Certification ISO9001, UL, TS16949
Model Number 1301
Minimum Order Quantity Negotiate
Price Negotiate
Packaging Details Vacuum packing
Delivery Time 3-8 work days
Payment Terms L/C, T/T, Western Union, MoneyGram
Supply Ability 9,999,999

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Whatsapp:0086 18588475571

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Product Details
Product Name Heavy Copper PCB Base Material FR4
Copper Thick 4 OZ Min. Line Spacing 0.5mm
Board Thickness 3.5mm Layer 4 Layer
Application Industrial, Oil, Solar Energy, Computer Surface Finish Immersion Gold
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Extra Large Heavy Copper PCB Board


Custom 4 Layer PCB 4 OZ


Heavy Copper PCB Board 4OZ

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Product Description

Extra Large Heavy Copper PCB Board Custom for Industry


Quick details:

Base Material: Copper

Layer: 4 L

Material: Fr-4

PCB Thickness: 4.0mm

Cu Thickness: 4.0 OZ

Min Line W/S: 0.5/0.5mm

Surface Finish: Immersion gold

Certificate: UL/ISO/TS16949

Application: Industrial Control

Color: Green, White, Blue, Black, Red, Yellow

Package: Vacuum packing


Common Usage of a Heavy Copper PCB


A heavy copper printed circuit board boasts an improved copper weight, along with the suitable high-temperature laminate material and thicker through-hole copper plating can change a weak board into a long-lasting and dependable wiring platform. Heavy copper conductors can increase the entire PCB thickness considerably. The copper thickness should always be considered during the circuit design stage. The current-carrying capacity is determined from the width and thickness of the heavy copper.

Heavy copper Printed Circuit Boards are used for multiple purposes such as in planar transformers, heat dissipation, high power distribution, power converters, etc. There is an increased demand for heavy copper-clad boards in computer, automotive, military, and industrial controls. Heavy copper printed circuit boards are also used in:

  • Power supplies, power converters
  • Power distribution
  • Welding equipment
  • Automotive industry
  • Solar panel manufacturers, etc.

Thick copper Printed Circuit Boards have started to see more extensive use in power electronic devices and power supply systems. This unique type of heavy copper PCB features a finished copper weight of more than 4oz (140μm), compared to the 1oz (35μm) or 2oz (70μm) copper weight generally found in standard designs.


Specification of Omini Heavy Copper PCB Printed Circuit Board

Layer 2-24 layer
Material FR4
Board thickness 0.4mm-5.0mm
Max.finished board side 457mm*610mm
Min.drilled hole size 0.25mm
Min.line width 0.075mm(3mil)
Min.line spaceing 0.075mm(3mil)
Surface finish/treatment Electroless/immersion gold/ENIG/Immersion silver/Organic solderability
Copper thickness 2 OZ - 8 OZ
Solder mask color green/black/white/red/blue/yellow
Inner packing Vacuum packing, Plastic bag
Outer packing Standard carton packing
Hole tolerance PTH:±0.076, NTPH:±0.05
Certificate UL, ISO9001, ISO14001, RoHS, CQC
Profiling Punching Routing, V-CUT, Beveling
Assembly Service Providing OEM service to all sorts of printed circuit board assembly


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Q1:Does Omini have enough capacity to prodece high-quality products?

A: Omini has 20 years of history in manufacturing PCB, more than 200 employees and 10,000㎡ factory area.We got the UL, ISO9001 certificates, and our production is sold abroad. We have engouh machines & equipment to ensure the quality, please check our Production Equipment list picturers.

Q2:How long does customers need to wait for the quotation and lead time?

A: We have a prefessional group to deal with your inquiry. In our working time, we will reply to your email within 30 minutes to show we have received your inquiry, Then we will send you our quotation in no more than 6 hours. Please noticed our working time is Monday to Friday, 8am to 24pm.

Q3:How can I make sure my PCB gerber is safety?

A: We promise we won't divulge your gerber to the 3rd party, one of our responsibilities is protecting customer information privacy and security, customer information can be included: company name, address, number, trademark, ect. And we could sign NDA with client if necessary.