Soldering electronic components on a universal circuit board, what kind of tip is good for an electric soldering iron?
It is better to use a tapered wear-resistant head.
However, this is only one aspect. To achieve a better welding effect, you should also pay attention to a few points:
1. The power of the electric soldering iron. Use 15 to 20 watts in summer and 20 to 25 watts in winter. At the same time, prepare a piece of fiber cloth with water. When the temperature of the soldering iron tip is too high, wipe it on the fiber cloth a few times to reduce the temperature to an appropriate level before soldering.
2. Solder wire. The tapered soldering iron tip is not easy to stick to solder, so the solder wire can only be aligned with the soldering point and then soldered with a soldering iron. In this way, the diameter of the solder wire is very important. Generally, a solder wire with a diameter of less than one millimeter is used.
3. Control the welding time. General solder joints should be completed within 3 to 5 seconds, otherwise it is easy to damage the parts or cause the pads to fall off.
4. Control the amount of solder. There is too little solder on the solder joints, and the mechanical strength is not enough, and it is easy to fall off in the future. Too much tends to flow short and waste solder.
5. Choose a universal circuit board with better quality. The substrate is preferably fiberboard, and the pads are not easy to fall off. The edge of the pad is smooth and free of burrs, otherwise it is easy to connect and short circuit.
6. De-oxidize the universal board and component feet. After a long period of time, the surface of the pad on the universal board is oxidized. It can be polished with 00 fine gauze until the copper color is exposed, and immediately spread evenly with an appropriate amount of rosin alcohol (absolute alcohol) solution prepared in advance. The oxidized component feet should also be cleaned. Do not use corrosive flux.
