Multilayer Fpc Flex Printed Circuit Board Low Cost Gold Finger Manufacturer Flexible Pcbs

Materials Used in Flex Circuits:

Now we will discuss the basic materials used in making flex circuits.

• Conductors: Conductors allow the electrical current to flow freely. Copper is the most commonly used conductor while other materials used include aluminum, carbon, silver ink etc.
  

• Adhesives: Adhesives are used for surface mount component binding. Adhesives are used according to the customer needs and thickness of conductor. Some adhesives that are used include epoxy, acrylic or PSAs (Pressure Sensitive Adhesives). Some circuits are built adhesive less.
  

• Insulators: Insulators are used to separate electrical conductors without conducting current themselves. They are also used as support. Some common insulators include polyimide, polyester, solder mask, polyethylene naphthalene and polyethylene terephthalate.
  

Finishes: Finishes are made to protect the metal surface from oxidation. The final finish depends on the application of the circuit. Some common finishes include solder, tin, immersion in nickel or gold, silver, carbon etc

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