Preheating is good advice if the rest of the components can handle it. Otherwise, shield them and hot air gun. I clip the leads to dead chips then there is no

Preheating is good advice if the rest of the components can handle it. Otherwise, shield them and hot air gun. I clip the leads to dead chips then there is no heating issue when cleaning the pads. IPC std certified to 0201. You can find many videos online. Tin based solder will whisker over years time which can be a concern. https://wikipedia.org/wiki/Whisker_(metallurgy) https://wikipedia.org/wiki/Whisker_(metallurgy)