IAg
Encyclopedia
IAg or Immersion Silver Plating is a surface plating technology used for Printed Circuit Boards
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Printed circuit board
A printed circuit board, or PCB, is used to mechanically support and electrically connect electronic components using conductive pathways, tracks or signal traces etched from copper sheets laminated onto a non-conductive substrate. It is also referred to as printed wiring board or etched wiring...
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Advantages of IAg
- Excellent surface planarity (compared to e.g. HASLHASLHASL or Hot Air Solder Leveling is a type of finish used on printed circuit boards .- Description :The PCB is typically dipped into a bath of molten solder such that all exposed copper surfaces are covered by solder. Excess solder is removed by scraping the PCB with hot air knives.The HASL process...
) - Low High Frequency Signal loss due to skin effectSkin effectSkin effect is the tendency of an alternating electric current to distribute itself within a conductor with the current density being largest near the surface of the conductor, decreasing at greater depths. In other words, the electric current flows mainly at the "skin" of the conductor, at an...
Disadvantages of IAg
- Rapid degradation of surface due to oxidation or contamination (with e.g. sulfur or chlorine)