W I say is that with the copper iron head, iron head has nothing to do with the heating core (that is popular with the large copper needle)
I know this high power more hot, high power head is also fast bad, but the head have good yo, I have a soldering station 936, there is a common, some iron head can use half a month or so, some common, also a few times can not be stained with tin.
When soldering, the temperature of some components can not be too high when welding
The greater the power of the iron, the greater the heat, the higher the temperature of the iron head. General transistors, integrated circuits, electronic components welding, selection of 20W internal heating type electric iron enough, power is too large, easy to burn components, because the diode, transistor junction temperature of more than 200 degrees will burn. Generally speaking, the choice of electric iron is the choice of electric iron power. The power of the soldering iron shall be determined by the size of the welding point, the area of the solder joint is large, and the heat dissipation rate of the solder joint is also fast, so the power of the electric iron to be selected should be greater. The power of the general electric iron is 20W, 25W, 30W, 35W, 50W, etc..
