FPC Reinforcement Types

FPC is widely used in electronic products, but because of its low mechanical strength and easy cracking, it is necessary to attach stiffen materials to strengthen the strength of FPC. So, do you know what types of FPC reinforcements there are? Today, China Flexible PCB manufacturer-SYS Technology will take you to understand the three types of FPC reinforcement, please continue to read below: 

1. PI reinforcement: The tolerance can be controlled within +/- 0.03mm, with high precision and high temperature resistance (130℃-280℃). PI reinforcement thickness: 0.075mm, 0.1mm, 0.125mm, 0.15mm, 0.175mm, 0.2mm, 0.225mm, 0.25mm.

2. Steel sheet reinforcement: Manual assembly is required, the process is more complicated and the cost is higher. Steel sheet reinforcement thickness: 0.1mm, 0.2mm.

3. FR4 reinforcement: If the thickness is less than 0.1mm, the tolerance can be controlled within ± 0.05mm. If the thickness is > 1.0mm, the tolerance is ±0.1mm. FR4 reinforcement thickness: 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 1.6mm.

The advantages and disadvantages of FPC stiffener are：

• PI tolerance is small and not very hard;

• Steel sheet is hard and stable, hand assembly and it is not easy to be reworked;

• FR4 is thicker and has wider tolerances.