Which one is better to explain the difference between internal heat and external heat of electric soldering iron?
The external thermoelectric soldering iron uses an electric heating tube on the outside, and the copper soldering iron tip is heated inside the tube. The internal thermoelectric soldering iron uses an electric heating core to heat inside the copper soldering iron. The thermal efficiency of the internal thermoelectric soldering iron is higher than that of the external thermoelectric soldering iron.
The internal heating element is located inside the copper head, and its thermal efficiency is relatively high The external heating wire is located outside the copper head, and the power of the soldering iron is related to the area of the metal being welded. A low-power soldering iron is suitable for soldering small parts. The power for soldering semiconductor devices and integrated circuits shall not exceed 30W. A high-power soldering iron is used to weld larger parts.
The larger the metal area, the greater the power of the soldering iron used. Internal heating type heats up quickly, with a large head and a long lifespan
Short, usually with small capacity; External heating type heats up slower, has a smaller head, longer lifespan, and can be used for larger capacities, such as 300W1
The difference between internal heating and external heating soldering irons:
1. Mainly due to differences in heating methods.
2. The shape of the soldering iron tips they use, the former is hollow cylindrical; The latter is a solid rod-shaped structure.
3. The former has a shorter preheating time, but is slightly affected by temperature, especially for low-power models; Relatively speaking, the latter has a slightly longer preheating time.
4. The former has slightly smaller leakage than the latter.
Firstly, it cannot be absolutely said that it is good, it depends on what your purpose is: welding small parts, such as electronic components, with good internal heating; Welding large parts, easy to use with external heat.
Secondly, the structure is different: the internal heating element is located inside the copper head, and its thermal efficiency is relatively high; The external heating wire is located outside the copper head, and the power of the soldering iron is related to the area of the metal being welded.
Thirdly, in terms of power: low-power soldering irons are generally internally heated and suitable for soldering small parts. The power for soldering semiconductor devices and integrated circuits shall not exceed 30W. High power soldering irons are usually externally heated and used for soldering larger parts. The larger the metal area, the greater the power of the soldering iron used.
Fourth, the heating speed is different: the internal heating type heats up faster, has a larger head, shorter lifespan, and is usually small in capacity; External heating system heats up slower, has a smaller head, longer lifespan, and can be used for larger capacities.
I personally think that internal heating soldering irons are more user-friendly because the tips of external heating soldering irons on the market are not easy to solder and are not convenient for soldering. In addition, if the soldering object needs to be placed with leakage current and the temperature cannot be too high, then a temperature regulating soldering iron with leakage protection should be selected
If the welding requirements are average, you can easily purchase a regular soldering iron on the market, ranging from a few to a dozen yuan
