What Is Surface Finish? | Sierra Circuits
Channel: Sierra Circuits
Date: 2021-03-15

In circuit board manufacturing, the process of implementing the PCB surface finish is critical in enhancing the reliability and shelf life of the PCBA. We will cover the various types of surface finishes the printed circuit boards are given to enhance good inter-metallic bonding and the shelf-life of the assembly. 

Current-day PCB assemblies consist mostly of SMT components where pad flatness is a significant consideration. Such PCBAs use electroless nickel and immersion gold surface finish. Based on the customer applications there are other surface finishes that are also available like soft gold, sterling silver, and OSP finishes. Sierra Circuits can process various types of surface finish according to customers’ needs such as hot air solder leveling (HASL), hot air solder leveling lead-free (HASL lead-free), electroless nickel immersion gold (ENIG), and electroless nickel electroless palladium immersion gold (ENEPIG). These different types of surface finishes enhance the shelf life of the board with each surface finish having a different shelf-life.

See our blog on surface finish:
https://www.protoexpress.com/blog/surface-finish-pcb-manufacturing/?utm_source=youtube&utm_medium=social&utm_campaign=blog%2B2021

*******************************************

THE PCB DESIGNER'S CORNER

PCB forum SierraConnect:
https://sierraconnect.protoexpress.com/?utm_source=youtube&utm_medium=social&utm_campaign=feed%2B2024

Seminars and webinars:
https://www.protoexpress.com/events/?utm_source=youtube&utm_medium=social&utm_campaign=feed%2B2024

Design guides:
https://www.protoexpress.com/pcb-design-guides/?utm_source=youtube&utm_medium=social&utm_campaign=feed%2B2024

PCB design tools:
https://www.protoexpress.com/tools/?utm_source=youtube&utm_medium=social&utm_campaign=feed%2B2024

Sierra Circuits products and services:
https://www.protoexpress.com/products/?utm_source=youtube&utm_medium=social&utm_campaign=feed%2B2024

Follow us on LinkedIn: 
Amit Bahl, the PCB Guy: https://www.linkedin.com/in/amit-bahl-sierra-circuits
Sierra Circuits: https://www.linkedin.com/company/sierra-circuits-inc
SierraConnect: https://www.linkedin.com/showcase/sierraconnect/