Immersion silver PCB surface finishing

Printed Circuit Boards (PCB) Vendor in Asia

Metallic solderability preservative.

· 8-15 micro-inches of nearly pure silver.

· Excellent solderability.

· Flat, planar surface.

· Aluminum wire bondable.

· 6-12 month shelf life.

• Less expensive than Electroless-Nickel Immersion Gold (ENIG)
• Safer than immersion tin
• Easier to use than Organic Solder Preservative (OSP)
• Has a more level surface than hot air surface leveling (HASL)
• Well suited to lead-free assembly techniques

Issues:

· Sensitive to handling, electrical test, and packaging.