Question by  flip (18)

What is heavy copper?

Heavy copper is used in the design of circuit boards, however I do not understand what it is.


Answer by  rhelt (461)

Heavy copper is an industry term. It is not actually any different from the copper that is used elsewhere on a board. Heavy copper is actually a term for layers of a circuit board that contain more than three ounces of copper in a single layer. This is equivalent to 4.2 mils of copper thickness.


Answer by  ahsanmahmoodawan (1169)

the printed circuit board PCB industry define heavy copper as layers exceeding 3 ounce of copper , or approximately 0.0042 inches (4.2 miles) of copper thickness PCB designers and fabricators often use heavy copper when designing and manufacturing cuircit boards in order to increase current carrying capacity as well as resistance to thermal boards


Answer by  Randy998 (226)

Heavy Copper is like normal copper used in circuit boards, the difference is it is more durable to electricity and heat flowing through the circuits. There are different places on the circuit boards that have a heavier current. Without the heavy copper the leads would burn out.


Answer by  nixpins (62)

According to wikipedia, 'heavy copper' is used in the PCB industry to refer to layers of copper exceeding 3 ounces in weight, or roughly 0.0042 inches of thickness. Layers of copper this thick allow for increased current-carrying capacity as well as increased resistance to thermal stress. The standard for current capacity in PCB design is known as IPC 2152.


Answer by  DtheM1 (1150)

Heavy copper in circuit boards refers to the amount used in traces. If the thickness on a circuit board is over. 0042 inches, or 3 ounces, it is heavy copper.


Answer by  johnchristopheryap (40)

Layers exceeding 3 ounces of copper or approximately 0.0042 inches of copper thickness. heavy copper are used to in designing and manufacturing circuit boards to increase current-carrying capacity as well as resistance to thermal strains.


Answer by  amswplusone (652)

Heavy copper basically has thicker layers, which increases the electrical conductivity and provides better protection from higher temperatures and constant temperature changes.

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