How many watts should a household soldering iron have?
The power of the soldering iron has little to do with the temperature. The greater the power, the larger the solder joints that can be soldered. Some soldering parts with faster heat conduction need to use a high-power soldering iron. According to the formula: heat = power * time, the greater the power It is said that the shorter the time to make the weldment reach equal heat, it has nothing to do with the set temperature of the soldering iron. At present, electric soldering irons are mainly divided into two types: external heating type and internal heating type. Under these two categories, there are also many specifications of electric soldering irons according to different powers. For the external heating type, the higher the power, the higher the temperature of the electric iron tip, and the power of the internal heating type is different from that of the external heating type.
There are two types of electric soldering irons: internal heating type and external heating type. There are mainly 20, 30, 35, 45, 50, 75W types of internal heating electric soldering irons. In addition to all the wattages of the internal heating type soldering iron, there are several types of 100, 150, 300W and so on. Choice of internal heating and external heating: Under the same wattage, the temperature of the internal heating soldering iron is higher than that of the external heating soldering iron.
Soldering irons are the most commonly used soldering tools in wire harness related soldering operations. Its function is to convert electrical energy into heat energy to heat and weld the soldering point. A large part of its success depends on how well it is controlled. Therefore, from a certain point of view, the use of electric soldering iron relies on a sense of technique.
Generally speaking, the choice of the soldering iron is the choice of the power of the soldering iron. The power of the soldering iron should be determined by the size of the soldering point. The area of the soldering point is large, and the heat dissipation speed of the soldering point is also fast, so the power of the soldering iron should be larger.
30W: suitable for mobile phones, MP3, and other products with small solder joints
40W: Suitable for Xiaobawang game controllers, handheld game consoles, etc.
60W: Suitable for home appliances such as TVs, stereos, keyboards, tape recorders, radios, electric fans, and game joysticks. At the same time, it covers all electrical appliances suitable for 30W and 40W. It can be used for maintenance of all household appliances.
Some high-current solder joints need to be tinned more, too low power will cause too fast heat dissipation, and the solder joints are not easy to tin or appear semi-liquid. The disadvantage of high-power soldering iron is that it has a short service life and cannot be powered on for a long time. It is relatively troublesome to maintain, and it is easy to burn components and boards if the technology is not good. So choose a soldering iron with the right power according to your own requirements.
