Four common surface treatment methods for PCB prototyping—HASL (Tin Plating), Chemical Nickel Gold, Electroplated Nickel Gold, and Nickel Palladium—highlighting their distinct advantages such as cost-effectiveness, lead-free soldering compatibility, and suitability for fine circuit patterns and various PCB applications.
Four Types of Surface Finishes for PCB Prototyping Read More »
PCB factories use various surface treatment methods for PCB prototyping, each with unique characteristics. Chemical silver is recommended for lead-free soldering and SMT, while HASL offers complete wetting of the copper surface and is suitable for lead-free soldering and visual inspection. Nickel gold is suitable for lead-free soldering, SMT, and resistance to environmental attacks. Electroplated nickel-gold is widely used for contact switch design, gold wire binding, and electrical testing. Nickel-Palladium-Gold is suitable for bonding gold and aluminum wires, lead-free soldering, and is cheaper compared to ENIG.
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