I bought some USB cables and noticed the RoHS sticker on them and never really read much about the standard so I have a few questions. It states something about 0.1% lead is allowed but in the case of cables, does that take in the whole weight of the cable?? Or on a circuit board, how is the math actually based for the allowable limit of lead in the solder. And last but not least, I have never ever used no lead solder. Is is a good idea to buy some for future reference in case of reworking something that followed the standard? And if yes, are all no lead solders the same or do the have choices using differing amounts of the ingredients to make it?
Thanks
Dave
