Look For in a Flex Circuit PCB Manufacturer
When choosing a flex circuit PCB manufacturer, it is important to look for a company that has high-quality equipment and fabrication processes. The best manufacturers will also have cutting-edge technology for fabricating flexible circuits. They should also have short production cycles and the ability to create prototypes before going into full-scale production. This will allow them to produce more quickly and efficiently and reduce storage costs.
You should also look for a flex circuit manufacturer that has quality, experienced staff that can create durable and reliable flexible printed circuit boards. Look for a company that has certifications like ISO 9001 and procedures in place for first-article inspection, in-process checks, and end-product testing. This will ensure the quality of the finished product.
The material used for a flex circuit pcb is crucial to its durability. The manufacturer should use materials that are durable enough to handle a wide range of environments, including temperatures, chemicals, and shocks. The materials should also be flexible to accommodate the bending and flexing of the circuit board. It is also important to understand the different environmental factors that may affect the flex circuit, so it can be properly designed to meet its needs.
Key Features to Look For in a Flex Circuit PCB Manufacturer
In addition to the material, a good flex circuit manufacturer will also have a strong understanding of how to design the boards for flexibility. They will know how to place the traces, vias, and pads in areas that are most likely to flex. This will make the board more durable and able to resist cracking and breaking. The thickness of the copper is another important factor. Choosing thinner copper will help prevent damage during bending.
It is also important to consider the type of finish used on the board. There are many different types of finishes available, each with its own advantages and disadvantages. Some are more prone to copper oxidation than others, so they should be avoided when possible. Other finishes are easier to solder, which can increase the speed of assembly and improve performance. Shielding is also a common feature, reducing interference and improving impedance control.
Finally, the flex circuit should have stiffeners to help support it. These are often made from FR4 or polyamide, and can be placed in strategic locations to provide more strength. They can also help relieve strain, balance weight, and enhance abrasion resistance. Stiffeners can be bonded to the polyimide with thermally cured acrylic adhesive or pressure-sensitive adhesives.
In addition to these features, the flex circuit should have a proper connection between the rigid and flex layers. This is often done with a hot bar solder connection, which is less expensive than using connectors. It is also more reliable than using adhesives and can withstand higher temperatures. It is also more resistant to vibration and shock than a conventional connector.
