Is it better to use a high power soldering iron or a low power soldering iron?
Electric network iron does not exist. Is it better to have high power or low power!
There are various types of power for electrified iron, ranging from 15 watts and 20 watts for smaller ones, 200 watts and 300 watts for larger ones, and 500 watts for pistol style ones. When performing welding work, the power of the soldering iron must be determined based on the welding object, and sometimes the power of the electric network iron must also be selected based on the climate season (winter, summer). Welding electronic components, using 15 watts to 20 watts is good, using 500 watts, a soldering iron will be a black hole, of course not good.
Whether the power selection is appropriate depends mainly on the melting and flow of the solder, which should not exceed three seconds. Too long can damage electronic components, too short can lead to unstable soldering, and the solder joints are not smooth.
Generally, it is recommended to use a soldering iron with a power of 20 watts for welding small components such as resistors, capacitors, transistors, and integrated blocks. In winter, it is recommended to increase the power by one level and use a soldering iron with a power of 25 watts. When welding large components such as heat sinks, transformers, shielding covers, or grounding large-area copper plates, it is recommended to use 35 watts to 40 watts. So, it is necessary to choose the appropriate power of the soldering iron according to the welding object, and there is no such thing as whether the power is too high or too low.
Introduction to the principle of electric soldering iron
Virtual soldering refers to the situation where only a small amount of solder is attached to the solder joint, resulting in poor contact and intermittent continuity. Fake soldering refers to the situation where the surface appears to be soldered, but in reality it is not soldered. Sometimes, by pulling it out with your hand, the lead can be pulled out from the solder joint. These two situations will bring great difficulties to the debugging and maintenance of electronic production. Only through extensive and careful welding practice can these two situations be avoided. When soldering circuit boards, it is important to control the timing. If it is too long, the circuit board will be burnt or cause the copper foil to peel off. When disassembling components from the circuit board, the soldering iron tip can be attached to the solder joint, and after the tin on the solder joint melts, the component can be pulled out. The temperature of a soldering iron is related to the volume, shape, length, etc. of the soldering iron tip. When the volume of the soldering iron tip is relatively large, the holding time is longer. In addition, to meet the requirements of different welding objects, the shape of the soldering iron tip varies, commonly including conical, chisel shaped, circular bevel shaped, and so on.
