12OZ Heavy copper PCB is a layer of copper foil bonded on the glass epoxy substrate of printed circuit board. When the copper thickness is ≥ 2oz, it is defined as Heavy copper PCB. Performance of Heavy copper PCB: 12OZ Heavy copper PCB has the best elongation performance, which is not limited by processing temperature. Oxygen blowing can be used at high melting point, and brittle at low temperature. It is also fireproof and belongs to non combustible material. Even in highly corrosive atmospheric environment, copper board will form a strong, non-toxic passivation protection layer.
Printed circuit boards are usually bonded with a layer of copper foil on glass epoxy substrate. The thickness of copper foil is usually 18 μ m, 35 μ m, 55 μ m and 70 μ M. The most commonly used copper foil thickness is 35 μ M. When the weight of copper is more than 70UM, it is called heavy copper PCB
Because of the actual manufacturing process and the more or less defects in the material itself, no matter how perfect the product is, it will produce bad individuals, so testing has become one of the indispensable projects in integrated circuit manufacturing.The following is about 14 Layer IC Test Board related, I hope to help you better understand 14 Layer IC Test Board.
