Tips for selecting electric soldering irons
Choosing a suitable electric soldering iron will greatly improve the efficiency of our soldering iron head in electronic lead-free welding. However, in general, the selection should be based on the actual situation of the object being soldered, with a focus on heating form, power size, and shape of the soldering iron head.
Selection of heating form according to electric soldering iron
1. The selection of internal and external heating: Under the same wattage, the temperature of the internal heating electric soldering iron is higher than that of the external heating electric soldering iron.
2. When low-temperature welding is required, a voltage regulator should be used to control the temperature of the soldering iron. The temperature of the soldering iron is closely related to the power supply voltage. In practical use, the temperature of the soldering iron is often reduced by lowering the power supply voltage.
3. Control the temperature by adjusting the extension length of the soldering iron head.
4. There are several methods to stabilize the temperature of an electric soldering iron: installing a stable power supply to prevent changes in the power supply network; Maintain a certain volume, length, and shape of the soldering iron head; Using a constant temperature electric soldering iron; Maintain a constant indoor temperature; Avoid natural winds or electric fans, etc.
Select according to the power of the soldering iron
1. When welding small wattage resistive and capacitive components, transistors, integrated circuits, printed circuit boards, pads or plastic wires, it is advisable to use an external heating type soldering iron of 30-45W or an internal heating type soldering iron of 20W. The best choice for application is to use a 20W internal heating electric soldering iron.
2. When welding the welding points of general structural products, such as wire rings, wire claws, heat sinks, grounding pads, etc., it is recommended to use a 75-100W electric soldering iron.
3. For large solder joints, such as metal frame joints, solder joints, etc., it is recommended to use a 100-200W electric soldering iron.
