If you are using a iron, then just apply it where needed. Other nearby components won’t that that hot unless you do something really wierd.
Также, Kapton tape doesn’t protect against heat. It keeps things from getting soldered by being a physical barrier to molten solder. The reason Kapton is used instead of other tape is that Kapton can stand high temperatures. It’s also useful that solder doesn’t wet Kapton.
Прочитайте больше: SMT сборка
#Сборка печатной платы