What is Heavy Copper PCB?

Heavy Copper PCB refers to a type of printed circuit board that features a significantly thicker copper layer

compared to standard PCBs. The copper thickness in heavy copper PCBs typically ranges from 3 ounces (105

micrometers) to 20 ounces (700 micrometers) or more.

The increased copper thickness in heavy copper PCBs offers several advantages and capabilities:

Enhanced Current Carrying Capacity: The thicker copper layer allows heavy copper PCBs to handle higher current

levels without experiencing excessive heat buildup or voltage drops. This makes them suitable for applications that

require high power or high current handling capabilities.

Improved Heat Dissipation: The increased copper mass in heavy copper PCBs enhances their ability to dissipate heat

generated by power components. This helps to maintain lower operating temperatures and ensures the reliability of

the circuitry.

Increased Mechanical Strength: Heavy copper PCBs exhibit improved mechanical strength and durability due to the

thicker copper layer. This makes them more resistant to mechanical stress, bending, and vibration, making them

suitable for rugged applications.

Enhanced Electromagnetic Shielding: The thicker copper layer in heavy copper PCBs provides better electromagnetic

shielding, reducing the risk of electromagnetic interference (EMI) and enhancing signal integrity.

Heavy copper PCBs find applications in various industries, including power electronics, automotive, aerospace,

industrial equipment, and renewable energy systems. They are commonly used in devices such as power supplies, motor

controllers, battery management systems, and high-power LED lighting.

It's worth noting that the manufacturing process for heavy copper PCBs requires specialized techniques and

equipment due to the increased copper thickness. These boards are typically manufactured using a combination of

plating and etching processes to achieve the desired copper layer thickness.