PCB News - Types and benefits of PCBA board flexible circuit

Types and benefits of PCBA board flexible circuit
PCBA board is the finished product formed by PCB board after SMT patch, DIP plug-in and PCBA test, etc. Almost all electronic products need PCBA board. With the continuous development of the electronics industry, the size of components is getting smaller and smaller, but the density is getting larger and larger, and flexible circuits have emerged.

Flexible circuit boards, also known as "soft boards", are printed circuits made of flexible insulating substrates. Flexible circuits provide excellent electrical performance, can meet the design needs of smaller and higher-density installations, and also help reduce assembly processes and enhance reliability. Flexible circuit boards are the only solution to meet the miniaturization and mobile requirements of electronic products.

1. Types of flexible circuits

In the past, this interconnection technology was realized by means of wire interconnection. There are many types of flexible circuits:

1. Two-way access flexible circuit, this is a single-sided flexible circuit, the purpose of manufacturing this circuit is to access conductive materials from both sides of the flexible circuit.

2. Double-sided flexible circuit is a circuit with two conductive layers. The two conductive layers are respectively located on the two sides of the basic layer in the circuit; according to your specific requirements, it can be formed on the two sides of the substrate sheet. For line patterns, the traces on the two sides can be connected to each other through copper-plated through holes.

3. Multi-layer flexible circuit is a combination of several single-sided circuits or double-sided circuits with complex interconnections. In the multi-layer design, shielding technology and surface mount technology are often used.

4. Rigid-flex circuit integrates the advantages of both rigid printed circuit boards and flexible circuits. The circuit is usually interconnected through plated through holes between the rigid circuit and the flexible circuit.

Second, the benefits of flexible circuits

Flexible circuits have many advantages. One of the main benefits of flexible components is that it can achieve almost error-free wiring, replacing labor-intensive manual wiring. In addition, unlike rigid circuits, flexible circuits can also be designed into complex three-dimensional structures because they can be bent into various shapes. As the name suggests, the materials used in flexible circuits can be bent back and forth numerous times, which means they can be used in highly repetitive applications, such as on print heads.
When PCBA manufacturers need to consider the weight of their products, flexible circuits are a very good substitute for rigid circuit boards and wires, because their dielectric materials and conductor lines are very thin.
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