Rigid-flex board is a new type of printed circuit board with both durability of rigid PCB and adaptability of flexible PCB. In all types of PCB, rigid-flex board is the most resistant to harsh application environment, so it is favored by medical and military equipment manufacturers. Our country's enterprises are also gradually increasing the proportion of rigid-flex board in the total output.

Physical properties

Rigid-flex PCB differs from rigid boards or flexible boards in material, equipment and process.

In terms of material, the material of rigid board is FR4 of PCB, and the material of flexible board is PI or PET. There are some problems between the two materials, such as joint, different shrinkage rate of hot pressing, etc. It is difficult for the stability of the product. Moreover, due to the characteristics of three-dimensional space configuration, besides the consideration of XY axis direction stress, Z axis direction stress bearing is also an important consideration. At present, material suppliers provide rigid-flex PCB manufacturers with improved materials suitable for rigid-flex board, such as epoxy or Resin, to meet the joint problem between PCB rigid board or flexible board.

In terms of equipment, due to the difference of material characteristics and product specifications, the equipment of lamination and copper plating parts must be modified. The applicability of equipment will affect the yield and stability of products. Therefore, the applicability of equipment should be considered before entering the production of rigid-flex PCB.

Comparing with general PCB, the advantages of rigid-flex PCB are as follows:

1. Light weight

2. Thin dielectric layer

3. Short transmission path

4. Small conduction aperture

5. Less noise and high reliability

The advantages of rigid-flex board over rigid PCB are as follows:

1. Flexible, three-dimensional wiring, according to space constraints to change shape.

2. High and low temperature resistance, fire resistance.

3. It can be folded without affecting the function of signal transmission.

4. It can prevent static interference.

5. Chemical change is stable and reliable.

6. Facilitate the design of related products, reduce assembly hours and errors, and improve the service life of related products.

7. Reduce the volume, weight, function increases and cost decreases

Rocket PCB is an innovative manufacturer focusing on electronic manufacturing. Rocket PCB is dedicated to spending 10 years of efforts advancing itself. We develop, produce and sell numerous successful high-quality products, including rigid, rigid-flex, HDI, any layer, Flex, large-size, embedded, RF, LED, backplane, metal substrate, ceramic substrate, IC structure, high-frequency, heavy copper. High quality and high reliability.