What are FR-3 Laminates?

FR-3 or Flame Retardant 3 is the NEMA designation for Synthetic Resin paper that uses an epoxy resin binder which is used as Printed Circuit Board Laminates. FR-3 laminates are made up of multiple plies of cotton impregnated with 2 coats of modified flame retardant epoxy resins. They are basically FR-2 laminates with an epoxy resin binder.

FR-3 laminates are generally not recommended for multi-layer PCB’s. 

PCB Directory has listed the leading FR-3 PCB fabricators and manufacturers and made them searchable through their location and capabilities. You can select the country or state to narrow down on local FR-3 PCB manufacturers or companies that can develop your printed circuit boards who are close to where you are located. In addition to this, you can also select the capabilities that you are looking for in a FR-3 PCB supplier, like - Number of Layers, Type of Board, board thickness etc. - We narrow down the list to show you the companies who can cater to your requirement.