What are the tips for selecting an electric soldering iron?
Choosing a suitable soldering iron will greatly improve the efficiency of our soldering iron tips in electronic lead-free soldering. However, in general, the selection should be based on the actual situation of the object being soldered, with a focus on heating methods, power levels, and the shape of the soldering iron tip.
Selection of heating form by electric soldering iron
1. Selection of internal and external heating: Under the same wattage, the temperature of an internal heating soldering iron is higher than that of an external heating 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 tip.
4. There are several methods to stabilize the temperature of a soldering iron, including installing a voltage regulator to prevent changes in the power supply network; The soldering iron tip maintains a certain volume, length, and shape; Using a constant temperature soldering iron; Maintain a constant indoor temperature; Avoid natural wind or electric fans, etc.
Selection based on the power of the soldering iron
1. When soldering small wattage resistive capacitive components, transistors, integrated circuits, printed circuit board pads or plastic wires, it is advisable to use a 30-45W external heating or a 20W internal heating soldering iron. It is best to use a 20W internal heating soldering iron in the application.
2. When welding the welding points of general structural products, such as wire loops, wire claws, heat sinks, grounding pads, etc., it is advisable to use a 75-100W electric soldering iron.
3. For large solder joints, such as welding metal frame tabs, solder pads, etc., it is advisable to use a 100-200W soldering iron.
