IPC J-STD-609A, Marking and Labeling of Components, PCBs and PCBAs to Identify Lead (Pb), Lead-Free (Pb-Free) and Other Attributes, presents a marking and labeling system that aids in electronics assembly, rework, repair and recycling; now provides additional codes for more precise specification of certain Pb-free solders. Provides guidance on marking and labeling of components and PCBs using a range of solder alloys. Enables clear identification of assemblies with lead or Pb-free solder; components that have lead or Pb-free second-level interconnect terminal finishes and materials; base materials used in PCB construction, including halogen-free resin; surface finishes, and conformal coatings. Prescribes maximum component temperature for assembly and rework.
IPC, www.IPC.org