PFC Flexible Circuits Limited
PFC Flexible Circuits Limited designs, manufactures and assembles flexible circuits; single-sided, double-sided, multilayer and rigid-flex circuits up to 18 layers. PFC assembles active and passive components on flex circuits.
The goal of PFC Flexible Circuits Limited is to provide quality products and services that meet and exceed our clients expectations. To achieve our goal, management is committed to continually improving the quality management system.
Below is the construction for a double layer flex circuit.
Double layer signifies that there are two layers of copper circuitry. In most cases, the two layers of copper are electrically connected by drilling small holes through the copper circuits and the separating dielectric, then plating the holes with copper to make a connection between them.
The slide show presents the artwork required for each layer of the circuit build.
A flex is considered multi-layer when it is over two layers. Via holes are used to connect the different layers of copper.
Below is a slide show of a four layer flex for a digital camera application.
With this design you can really see how flex circuits can assist in electronic packaging.
In conjunction with Samtec, a well-known electronic connector company out of New Albany, Indiana, PFC has created the PFC Data Link product line. The PFC Data Link is a direct cross to the Samtec Data Link product line. If you have used Samtec Data Links in the past, the PFC Data Link should be a direct electrical replacement.
Samtec, had been successfully delivering flexible printed circuit assemblies to their customers since 2002. The concept of making flexible printed circuits by Samtec was to assist in marketing and promoting their high speed connector systems such as the Q Strip™, Q Pairs™, Q Rate™, Q2™, Edge Rate™ and the Razor Beam™. In 2012, Samtec decided to stop producing flex and asked PFC to provide flex assemblies to Samtec customers.
The slide show below represents the artwork levels of an 8 layer rigid flex. Four layers are rigid layers and four are flexible. It is highly recommended to do a balanced construction. For example, in the circuit below, you will see 2 rigid copper layers on the top and bottom outside, and 4 flex copper internal layers.
The application is for a defibrillator (medical device). You can see that there are connectors required on two different sides of the circuit. This circuit is carrying signals and power.
Often used to create bare/exposed metal contacts beyond the polyimide. The method involves selective three dimensional etching. Below are some pictures and graphics to give you an idea of what is possible.
Single-layer circuits have a single layer of copper laminated between polyimide dielectrics.
The slide show below displays the artwork levels of the build to manufacture the circuit.
This particular circuit is unique because, while it has only one layer of copper, it is very dense. The line and space width is only 0.0014 inches or 35 microns!