6 Common PCB Surface Treatments
Common PCB surface treatment processes include lead-free or leaded tin spraying, hot air leveling (HAL), organic coating (OSP), chemical gold plating (electroless nickel/immersion gold), electroplating nickel gold, immersion silver, immersion tin, and halogen-free gold finger. Environmental concerns are driving a shift away from leaded processes towards lead-free options like tin spraying to comply with ROHS standards, crucial for passing audits and securing long-term product development partnerships. These treatments alter PCB components’ properties to ensure solderability and prevent oxidation, crucial for reliable electrical connections.