Flex pcb stiffener（2）

1. FR4 stiffener: This is a popular stiffener material for flex PCBs. It is made of fiberglass-reinforced epoxy resin and provides excellent rigidity and stability to the flexible circuit.

2. Polyimide stiffener: This is another common stiffener material for flex PCBs. It is made of a high-temperature resistant polymer and provides good dimensional stability and flexibility.

3. Aluminum stiffener: This is a lightweight and durable stiffener material for flex PCBs. It is commonly used in applications where high strength and rigidity are required.

4. Stainless steel stiffener: This is a strong and corrosion-resistant stiffener material for flex PCBs. It is commonly used in harsh environments where the flex circuit needs to withstand high temperatures and chemicals.

5. Copper stiffener: This is a good conductor of electricity and heat, making it a popular stiffener material for flex PCBs. It is commonly used in applications where thermal management is critical.