| Tip life TOP | |
| Point 1 | Solder corrodes the iron-plated part and makes a hole. |
| Point 2 | The solder-plated part is oxidized in black and the tip is no longer wet with solder. |
| Point 3 | The surface of the heating element insertion part oxidizes and the heat conduction becomes poor. (*Except for tips in composite type which has different structure) |
Point 2. The solder-plated part is oxidized in black and the tip is no longer wet with solder.
The iron plating beneath the solder-plated part becomes exposed, and the area becomes black as oxidization starts. This is especially common when using lead-free solder, or the soldering iron is used without applying solder in the rework for solder bridge or other process.
