With the pending lead-free legislation impacting PCB manufacturing on a global scale,
the immersion silver process is rapidly gaining popularity as the lead-free surface finish of choice.
While ENIG presently has a larger market share, over the past 12 months more immersion silver process lines have been installed in PCB facilities than any other finish.
Immersion silver has a controlled thickness of 5-12 micro inches and a shelf life of at least 12 months.
Silver is compatible with most assembly processes, is cost advantageous, and with its increased popularity, is becoming more commonly available.