Imagineering, Inc. | https://www.pcbnet.com/blog/understanding-the-pcb-fabrication-process-from-design-to-delivery/
. For example, electroless nickel immersion gold (ENIG) is a common surface finish due to its long shelf life and RoHS compliance . However, it’s more expensive than other options
Imagineering, Inc. | https://www.pcbnet.com/blog/how-pcbs-are-made/
. Common types of surface finishes are: HASL (Hot Air Solder Leveling): A cost-effective finish that enhances solderability and protects copper. ENIG
Surface Mount Technology Association (SMTA) | https://www.smta.org/knowledge/journal.cfm
. Hofmann, I. Schubert, D. Wünsch, R. Ecke, K. Vogel, K. Gottfried, D. Reuter, M. Rennau, S.E. Schulz, T. Geßner Abstract 30-1 On the Corrosion Mechanisms of Common Printed Circuit Board Surface Finishes in Three Different Sulfur-Rich Environments Matthew D. Weeks, Ph.D., David J
Surface Mount Technology Association (SMTA) | https://www.smta.org/icsr/speaker_forms/Paper-Format-Requirements.doc
. Immersion silver surface finish eliminated due to corrosion risk Alternative finish must meet ICT and solderability requirements Investigate several alternatives (OSP, ImSn, ENIG, and LF HASL) PCB laminate may change from what was used on DT and NB products
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