Finishes

In order to achieve the very best assembly wetting performance, we need to match the most appropriate solderable finish to your application and assembly process.

In order to satisfy every combination of assembly profile, material use and application requirement, we offer the following comprehensive range of solderable finishes as in-house processes:

  • Traditional lead based HASL (military & life critical applications predominantly)
  • Lead-free HASL
  • Immersion Tin (Sn)
  • Immersion Silver (Ag)
  • Immersion Gold over Nickel (ENIG)
  • Electrolytic  Gold over Nickel (ENEG)
  • Gold over Palladium
  • OSP (Organic Solderability Preservative)

We are happy to advise you on the most suitable finish based on a number of factors including shelf life, handing considerations, surface topography, assembly open windows between processes and obviously cost.

All boards supplied include a comprehensive quality report that specifies the plating specifications of the boards along with a cross section if required that illustrates inner layer plating depths for the through hole plating and surface treatments.

Momentum also offer a wide range of solder resist colours and finishes (gloss or matte)to suit your design requirements.

Whilst the vast majority of PCBs are manufactured in industry standard green, we also offer red, blue, yellow, clear and brilliant white and black resists that are extensively used in the manufacture of LED based lighting applications to either reflect or suppress peripheral light.

All of the above colours are offered without a cost premium and the inks utilised have been standardised to offer the highest levels of colour fastness and resistance to fade and/or discolouration when processed.

We are happy to advise you on the best use of materials and finish as part of our service.

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