Heavy copper PCB refers to a special type of circuit board where the copper foil thickness is significantly greater than that of ordinary PCBs.
Heavy copper Printed circuit board is typically defined as one where the copper thickness exceeds 3 oz (approximately 105 micrometers). The core value of heavy copper PCB lies in its outstanding current-carrying capacity, excellent mechanical strength and enhanced thermal management performance.
Heavy copper PCB is manufactured through special electroplating and etching processes, enabling it to handle currents of tens or even hundreds of amperes and withstand frequent thermal cycles caused by excessive current. Heavy copper PCB is widely used in key areas such as high-power power conversion equipment, automotive electronic control systems, industrial motor drivers, and power distribution systems. Its thick copper conductors not only significantly reduce impedance and heat loss but also efficiently conduct and dissipate the heat generated by components, thereby greatly enhancing the reliability and long-term stability of the entire electronic system.
Another key advantage of Heavy copper Printed circuit board is its enhanced durability and thermal management performance. The thick copper layer has a lower unit impedance, which can effectively reduce heat loss and quickly dissipate heat through a large copper surface area, thereby improving the reliability and lifespan of the entire system. Heavy copper Printed circuit board is also widely used in automotive electronics, aerospace, and industrial fields. These application scenarios require that the circuit board must operate stably and continuously in harsh environments.
Looking to the future, with the rapid development of new energy vehicles, renewable energy power generation and Industry 4.0, the demand for high-power and highly reliable electronic systems will continue to grow. The heavy copper PCB, with its irreplaceable technological advantages, will undoubtedly play an increasingly important core role in such applications and continuously push the boundaries of PCB process technology.
