Immersion silver and semi-autocatalytic gold plating
Umicores´ silver and gold plating process (ISIG) provides customers a high performance nickel-free coating which meets most of the common assembly requirements like multiple solderability and bondability with aluminium and gold wire even by existing thermal ageing stress before assembly.
Due to its outstanding film characteristics ISIG deposition is very well suited to withstand the higher requirements of PCB designer concerning fine pattern ability and high frequency signal transfer in combination with complying newest RoHs and WEEE regulations.
Advantages
Nickel free coating
High conductivity
Thin and very uniform electroless desposition
Suitable for (ultra) fine pitch layouts
Ductile final finish compatible for flex PCB
Dense and homogenous gold protection layer up to 0.3 μm feasible
Reliable Pb-free and Sn/Pb soldering
Excellent Al- and Au-wire bondability
Applications
Flexboard PCB (FPC)
Medical technology
High frequency technology
