Yes. The air quality -- especially the amount of sulfur in the air -- contributes to sulfur creep corrosion. Run that through an image search to see the results

Yes. The air quality -- especially the amount of sulfur in the air -- contributes to sulfur creep corrosion. Run that through an image search to see the results. It's pretty dramatic. Some of this equipment looks like it had been underwater. But while the older equipment was pretty stable (so long as the capacitors didn't bulge), today's equipment usually has to comply with ROHS. Lead, for all its faults, has a very well-understood corrosion mechanic. The exotic blends used to replace it, we're discovering, aren't always so great... You know, now that I think about it, I wonder how many cell phone warranty claims have been denied for water ingress were actually due to poor solder choices? Color-changing stickers aside, of course.