Ceramic PCB Surface Finishes

Six different surface finishes are available for Ceramic PCBs

Which surface finish should I choose for Ceramic PCBs? The choice will depend on required storage, the end application, the assembly process, the design of the PCB itself. Not all FR4 surface finishes are suitable for ceramic PCBs. Those available are detailed below and we would be pleased to help you further with any questions you may have regarding a suitable finish for your application.

OSP (Organic Solderability Preservative)

Usual thickness : 0.20-0.65µm
Shelf Life : 6 months

Unprotected copper will quickly oxidise which can cause soldering issues. OSP is a popular, low cost, environmentally friendly finish to prevent that oxidisation and provide an improved surface for solderability.

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