Points to Dwell On

摘要

Some of the components our customers ask us to solder can absorb a lot of heat. And I mean a lot of heat. One particular part that we solder has 16 solder joints, is made completely of metal (not sure what, but it seems like a tinned copper), and nearly every pin sits on an enormous ground plane. Not to mention the holes are by no means oversized to make this any easier. Needless to say, it gave us some trouble. We tried using a local spot preheat. This helped a little, but at the end of the day, that solder still did not want to flow up through that ground plane. So, we thought, why not just sit there with the nozzle. Turns out, that was the trick.