Soldering Techniques: Precautions for Welding Various Electronic Components
Soldering of Pin type Components: Use an electric soldering iron and solder wire to dot and form droplet shaped solder drops at appropriate positions. When soldering array pin components, the appropriate length of the component pins should be selected first, which can be based on the packaging of the component itself. The process of soldering is to first place the soldering iron on the solder pad, and then place the solder wire close to the solder pad. If the amount of solder is appropriate, move the solder wire away first. When the solder is in a droplet shape, move the soldering iron away. Note that it is not advisable to place too much solder on the solder pad. Finally, cut off the long pins.
Soldering SMT components with an electric soldering iron: First, apply a small amount of solder on the solder pad (if it is a flat component, you can place more solder to avoid soldering later, but if it is a thicker component such as a capacitor, light-emitting diode, etc., you can consider placing a small amount of solder to feel that the component can be soldered together first, and then soldering can be done to prevent the component from being soldered firmly enough). Then use an electric soldering iron and tweezers to fix one end of the component first, make sure that the component is not biased, and then dot the other end of the solder pad to fix the component. To make the component tightly attached to the circuit board, you can first dot the solder on the first end with an electric soldering iron, instantly dot the solder on the other end, and press it down with tweezers (this method is suitable for larger models). Surface mount resistor).
When soldering integrated chip type surface mount components, first place a small amount of solder on the solder pads of each pin of the chip, then place the chip on top, determine the position, and fix the diagonal ends of the chip first. If there is a bias in the fixed end, it can be removed and re fixed. If there is no problem, other pins can be connected to the solder on the original pad first. Finally, add a small amount of solder to each pin as needed to make it more fixed and not suspended. Finally, use tweezers to check if there are any soldered pins.
