PCB Surface Finishes: Choosing Between HASL, ENIG, ENEPIG, OSP & More

Illustration comparing six PCB surface finishes: ENIG, HAL LF (lead-free HASL), OSP, immersion silver, immersion tin, and HASL.

PCB surface finishes protect exposed copper pads and help ensure reliable soldering performance in electronic assemblies. Printed Circuit Boards (PCBs) are used in a wide range of products, including consumer electronics, industrial controllers, and medical systems. Since exposed copper oxidizes quickly when exposed to air, a suitable surface finish is required to maintain solderability and […]