San Francisco Circuits explains that Immersion Silver, also known as immersion Ag, is an RoHS compliant (lead-free) Printed Circuit Board (PCB) surface finish offering exceptional flatness and cost efficiency. Read more >>
This PCB surface finish coating is particularly well-suited for fine-pitch components and can replace Immersion Gold over Electroless Nickel (ENIG) in many applications.
Unlike ENIG, Immersion Silver applies directly to copper without requiring a diffusion barrier. It’s an excellent choice for applications that must avoid magnetic materials in the PCB.
Key Benefits of Immersion Silver
- Planar and Reworkable: Ideal for fine-pitch designs and surface-mount technology (SMT).
- Cost-Effective and Stable: Combines affordability with high stability.
- RoHS Compliant: Meets environmental and regulatory standards.
- Great Solderability: Ensures reliable connections and easy processing.
Applications of Immersion Silver
This surface finish is widely used in:
- EMI Shielding
- Aluminum Wire Bonding
- Membrane Switches
- Very Fine Traces
While Immersion Silver offers several advantages, its sensitivity to contaminants and susceptibility to tarnishing make proper handling and storage critical. Choosing a qualified boardhouse is essential to maintain quality and performance.
Find out more about Immersion Silver and other PCB surface finishes, or visit the company’s website.
