What is the temperature of a soldering iron?
The temperature of an electric soldering iron is 300-400 ℃.
Specifically, when it is necessary to insert electronic materials directly, the temperature of the soldering iron tip should be set between 330-370 degrees. If it is a surface mount material, the temperature is suitable between 300-320 degrees. The maintenance of the buzzer requires a temperature of 270-290 degrees, and the soldering temperature of large component pins cannot exceed 380 degrees. In addition, for special materials, special temperature settings are also required.
Soldering irons are divided into two types: external heating and internal heating:
An external heating electric soldering iron consists of a soldering iron tip, soldering iron core, housing, wooden handle, power lead, plug, and other parts. Due to the fact that the soldering iron tip is installed inside the soldering iron core, it is called an externally heated soldering iron. The soldering iron core is a key component of an electric soldering iron. It is composed of parallel winding of heating wires on a hollow ceramic tube, insulated with mica sheets in the middle, and connected to a 220V AC power supply through two wires.
The internal heating electric soldering iron consists of a handle, connecting rod, spring clip, soldering iron core, and soldering iron tip. Due to the fact that the soldering iron core is installed inside the soldering iron tip, it heats up quickly and has a high heat utilization rate, hence it is called an internal heating soldering iron. The commonly used specifications for internal heating soldering irons are 20W and 50W. Due to its high thermal efficiency, a 20W internal heating soldering iron is equivalent to a 40W external heating soldering iron.
The rear end of the internal heating electric soldering iron is hollow, used for fitting onto the connecting rod and fixed with a spring clip. When replacing the soldering iron tip, the spring clip must be removed first, and the front end of the soldering iron tip must be clamped with pliers and slowly pulled out. Remember not to apply too much force to avoid damaging the connecting rod.
In mobile phone maintenance, it is often necessary to replace components on the circuit board, which requires the use of an electric soldering iron and has high requirements for it. This is because the components of mobile phones use surface mount technology, with small size, high integration, fine printed circuits, and small solder pads.
If the soldering iron is not selected properly, it is easy to cause human malfunctions during the soldering process, such as virtual soldering, short circuits, and even damaging the circuit board. Therefore, it is recommended to choose a high-end soldering iron as much as possible, such as using a constant temperature, temperature, and anti-static soldering iron. In addition, some large components such as shielding covers require the use of high-power soldering irons for soldering, so it is also necessary to prepare a regular thick headed soldering iron with a power of 60W or more.
