The end is nigh for lead in solder, as our columnist Tim O’Neill wrote in July in CIRCUITS ASSEMBLY.
Rules governing use of the materials – Directive 2015/863, aka RoHS 3 – are coming online and will be in full force by 2019.
Suppliers have until July 22, 2019, to meet the stricter provisions, which include no more than 0.1% lead in medical devices, which are joining consumer, industrial and other electronics products on the effectively banned list.
In “Life After SAC 305,” Tim poses the question, What comes next? Already, the future of commonplace unleaded alloys such as SAC is being questioned. As Tim writes, “It is even feasible SAC 305 will be dislodged by a new de facto alloy that better serves the needs of the market.”
Poor SAC. It entered this world under duress – a much-debated compromise that standards bodies and major OEMs agreed on only after reviewing nearly 80 other alloys.
Over the past couple months, I took my now 14-year-old on his first electronics manufacturing factory tours. He had visited a vocational school with his 8th grade class, but I think it really opened his eyes to what real-life manufacturing looks like. He’s not considering vocational school, but I think it’s important that he – and all kids his age – understand what really goes on in (well-run) factories.
As background, “14” knows what a circuit board is, but has no knowledge of how they are made or assembled. At IMI PCB and Lightspeed Manufacturing, both located in Haverhill, MA, he was able to see the basic operations up close, and listened to explanations of how boards are transformed from digital 0s and 1s and schematics to large green (or other colored) panels and arrays, and then screened with solder paste and assembled, and (sometimes) reworked. Both plants are low-volume, high-mix operations, which altered his impression somewhat, for as a kid with multiple handhelds of his own, he naturally expected to see machines pumping out cellphone boards every three seconds.
Before he entered, I asked what he was expecting to see inside. “Mainly machines,” he said, “because since the Industrial Revolution and the invention of mass production, we are in an age where machines are huge parts of our lives. I think the machines are doing the work, and people are just here to help run them.” He was in for some surprises.
Jim Raby has been one of my favorite subjects over the years. How could he not be? He lived such a rich and interesting life. How many of us, for instance, can say we started our careers working side-by-side developing rockets with Wernher von Braun?
A legend in electronics soldering, Jim’s backstory is well-known. He spent his entire career in electronics manufacturing. Starting with the Saturn/Apollo Program, he became synonymous with soldering and high-reliability printed circuit assemblies. He is credited for developing the NASA and Navy (the famous China Lake) soldering schools, and was instrumental in developing the IPC soldering certification curriculum, used by the vast majority of the industry today. He initiated the Electronics Manufacturing Productivity Facility (later known as the American Competitiveness Institute). All in all, he trained tens of thousands of engineers and operators.
He was issued patents for wave soldering and embedded components, and initiated the Zero Defect Program for wave soldering. He also was the driver of the Lights Out Factory concept that revolutionized the modern electronics manufacturing facility.