What is heavy copper PCB

Heavy copper PCB is a high -current PCB that contains 3 ounces or more copper in the external and inner layers of the circuit board. Even if the total amount of copper is less than 3 ounces, if the thickness of the copper of the PCB is greater than 4 ounces/square foot, it is also considered to be a heavy copper PCB. This large amount of copper is used as an alternative to increasing the degree of wiring.

The characteristics of heavy copper PCB

Compared with ordinary PCB boards, heavy copper PCB has the following characteristics:

1. Strong current carrying capacity: The copper foil of heavy copper PCB is large, so it can carry larger currents, which is suitable for some occasions that require high -current conduction.

2. Excellent heat dissipation performance: The heat guidance rate of heavy copper PCB is high, good heat dissipation performance, and is suitable for some electronic equipment that requires good heat dissipation effects.

3. High mechanical strength: Due to the large thickness of copper foil, the mechanical strength of heavy copper PCB is relatively high, which can provide better mechanical support performance.

4. Good corrosion resistance: A layer of corrosion coating on the surface of the copper foil is plated, which enhances its corrosion resistance and extend the service life.