Las placas de circuito impreso (PCB) suelen estar recubiertas de una gruesa lámina de cobre sobre sustratos epoxídicos de vidrio. El grosor de la lámina de cobre suele ser de 18μm, 35μm, 55μm y 70μm. La lámina de cobre más común es de 35μm. Las placas PCB de cobre pesado se pueden fabricar simplemente mediante dos procesos principales de chapado y grabado en...
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