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advantages of Flexible Printed Circuit Assembly
The processes involved in flexible printed circuit assembly are similar to those used in rigid circuit boards. Both methods use rigid layers of conductive material as the base layer. The base layer for rigid circuits is generally FR4, which provides thermal resistance and excellent mechanical force, but does not bend or flex. In contrast, flexible circuits use polyimide, which has excellent flexibility, but limited mechanical support. After they have been laminated, the flex circuit is cut to size.
Flexible printed circuits are made from polyimide material, which is a more expensive alternative to FR-4. The flex circuits also require less space. Flexible PCBs typically cover about 10% of the rigid circuit board area. For this reason, flexible circuits are used in mobile devices. However, it is important to remember that a flexible printed circuit assembly is not the same as a rigid one. This is because a flexible PCB is made by putting the components together temporarily. Using a nesting technique, electronic components can be placed close together and are protected against being knocked loose during assembly. The process of flexible PCB assembly also ensures that the circuit boards can be serviced easily and efficiently.
Flexible circuits provide an endless array of assembly options. Electrical devices can be attached to the flex circuit and the material can be bonded to almost any surface. The flex circuit is flexible enough to take a curve or bend, and it is capable of being molded into virtually any 3-dimensional shape. Flex circuits can also withstand dynamic flexing, making them ideal for electronics packages with rotating or moving parts. When designing flex circuits, make sure you consider the possibilities before making your final decision.
The flexibility of a flexible printed circuit makes it ideal for packaging problems. Previously, most assemblies were composed of many individual circuits, and purchasing many of the same parts would increase assembly costs. Today’s flex circuits eliminate the need for so many parts and remove the possibility of human error. Because flex circuits are integrated circuit assemblies, all interconnections are controlled by the design artwork. This eliminates human error that is associated with discrete wire interconnections.
Another important aspect of flex circuit assembly is the bill of materials (BOM). This is the list of materials required to assemble a flex circuit. The BOM organizer should include a comment section that describes the part’s physical CAD footprint. The flex circuit manufacturer will have different requirements for this information. If you are considering a flex circuit manufacturer for your next project, it is important to understand the BOM.
Flex PCBs have been around for a long time and are now the most popular way to build electronic devices. These are known as flex circuit boards or flex prints and are widely used in high-density applications. Flexible PCBs are typically made of polyimide or transparent polyester film. The material is highly heat-resistant, and it is the perfect choice for solder-mounting components. You can even have them printed on transparent polyester.
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