Surface Finish Options
We offer a variety of surface finishes. Ultimately, the decision on what is the “right” finish for a particular board or design lies with the designer or loader of the boards and must be specified at quote. A discussion on appropriate finishes for particular applications can be found in the excellent reference: Printed Circuits Handbook by Clyde F Coombs Jr, currently 6th Edition.
Unless otherwise specified, pcbs will be supplied with HASL (tin/lead) finish.
Briefly, the finishes we offer from our local factory are:
- Hot Air Solder Level (HASL- tin/lead)
- 0.3um Immersion Silver (Lead Free) – suitable for soldering applications
- 0.03um Immersion Gold over 0.3um Immersion Silver (Lead Free) – suitable for soldering applications
For further discussion on the pros, cons and shelf life of each of the above finishes we have a discussion document available for download.
We can also supply Leadfree Solder and Immersion Gold over Electroless Nickel (ENIG) finishes via our overseas manufacturers.
