The distinction between an internal and an external heating soldering station
Internal heat refers to "heating from the inside," as the name suggests. In order to transfer heat from the inside to the soldering iron tip, the tip is placed outside the heating source. Fast heating, excellent heating effectiveness, compact size, light weight, and low power consumption are all benefits. benefits like dexterity. appropriate for soldering tiny parts. But, the electric soldering iron tip's high temperature makes it easy for it to rust and turn black. Also, the soldering iron's core is also easily broken, and the power is low—only 20W, 35W, or 50W, for example.
The internal heating type electric soldering iron has a hollow cylinder-shaped soldering iron tip, which covers the heating element to prevent heat loss into the atmosphere. As a result, the heat usage efficiency is high, the warm-up time is quick, and the power is average. It doesn't have to be too big to satisfy the standards. Electric soldering irons with internal heating that are about 20W–30W in power are typical and have internal heating powers under 50W.
External heating soldering station
"External heat" means "heating outside", so named because the heating resistor is outside the soldering iron. It is suitable for welding both large components and small components. Since the heating resistance wire is outside the tip of the soldering iron, most of the heat is dissipated to the external space, so the heating efficiency is low and the heating speed is slow. Generally, it takes 6 to 7 minutes to preheat before welding. Its volume is large, and it is inconvenient when soldering small devices. However, it has the advantages of longer use time and higher power of the soldering iron tip, and has various specifications such as 25W, 30W, 50W, 75W, 100W, 150W, and 300W.
The shape of the soldering iron tip used in the external heating electric soldering iron is a solid round iron column, and the soldering iron tip of the heating element is covered. Including the handle of the soldering station, if you see that the electric soldering iron has the above characteristics, you can analyze it and know that it belongs to the external heating electric soldering iron.
