- Flexibility and Reliability of FPC FPC
At present, there are four kinds of FPCs: single-sided, double-sided, multi-layer and combination of software and hardware.
① Single sided FPC is the PCB with the lowest cost and low electrical performance requirements.
② The double-sided FPC is a conductive pattern made of a layer of etching on both sides of the insulating base film.
③ Multilayer FPC refers to laminating three or more layers of single-sided or double-sided flexible circuits together, forming metallized holes through drilling and electroplating, and forming conductive paths between different layers. In this way, complex welding processes are not required.
④ The soft and hard combination plate is composed of rigid and flexible base plates selectively pressed together. The structure is compact and conductive connection is formed by metallized holes.
- Economy of FPC FPC
Flexible circuit is a good design choice because of its complex circuit, processing many signals or having special electrical or mechanical performance requirements. When the size and performance of applications exceed the capacity of rigid circuits, flexible assembly is the most economical. A 12mil pad with 5mil through-hole inside and a flexible circuit with 3mil lines and spacing can be made on one film.
High cost raw materials are the main reason for the high price of flexible circuit boards. The price of raw materials varies greatly. The cost of raw materials used in the polyester flexible circuit with the lowest cost is 1.5 times that of raw materials used in the rigid circuit; High performance polyimide flexible circuits are up to 4 times or more.
- Cost of FPC FPC
In spite of the above cost factors, the price of flexible assembly is declining and becomes close to the traditional rigid circuit. The main reasons are the introduction of new materials, the improvement of production process and the change of structure. The current structure makes the thermal stability of the product higher, and few materials do not match. Some newer materials can make more precise lines due to the thinner copper layer, making the components lighter and more suitable for small space.