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San Francisco Circuits: Immersion Silver Surface Finish - RF Cafe

Immersion Silver Surface Finish process, also known as immersion Ag

December 17, 2024 - San Mateo, California -  San Francisco Circuits, a premier provider of leading edge technology printed circuit boards, has published a new article on the Immersion Silver Surface Finish process, also known as immersion Ag. It is an RoHS compliant (lead-free) PCB surface finish offering exceptional flatness and cost efficiency. This surface finish 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 board house is essential to maintain quality and performance.

To explore more about Immersion Silver and other PCB surface finishes, visit the full article on the San Francisco Circuits website.


About San Francisco Circuits

San Francisco Circuits is a provider of PCB fabrication and assembly, has a dedicated team specializing in simple and complex PCB fabrication and assembly technologies. They can produce elaborate and high-quality PCBs in a number of custom and common layouts. From basic to intricate PCBs–their engineers will meet your PCB fabrication & assembly needs. The company provides a rare balance between technical expertise and competitive pricing. And they not only provide high-quality products but also high-quality customer service at the same time. San Francisco Circuits has been voted by National Television as the "world's greatest in PCBs" and has demonstrated experience as a power player in PCB fabrication and assembly.

If you are looking to discuss PCB projects of any size or scope, feel free to reach out to them via our website (see below).

 


Contact

Alex Danovich
San Francisco Circuits, Inc.
Phone: 1-800-732-5143

Web:  www.sfcircuits.com

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