SMT Soldering|How to use a soldering iron


The soldering iron is a common electronic tool used for soldering and repairing various electronic devices such as electronic components and circuit boards. Before using a soldering iron, there are some important precautions and steps to follow to ensure the job is done safely and effectively, which will hopefully help you better understand how to use it properly.


The electric soldering iron mainly consists of the following parts: 

Soldering Tip: This is the front-most part of the soldering iron and is usually made of copper. The soldering iron tip is heated and used to transfer heat.

Soldering Iron Handle: The handle is usually made of insulating material to protect the user from high temperatures.

Power Cord: A soldering iron usually comes with a power cord that connects the iron to an electrical outlet.

Temperature Controller: Some soldering irons have a temperature control function that allows the user to adjust the temperature of the iron according to the needs of the job.


Here are the basic steps for using a soldering iron:

1. Prepare the work area: Place all necessary tools and materials, such as solder, soldering station, digital microscope, tweezers, soldering wire, etc.
2. Wear personal protective equipment: Wear safety glasses to protect your eyes from welding spatter. Use heat-resistant gloves to prevent burns.
3. Preheat the soldering iron: Turn on the power switch of the soldering iron and start preheating. The temperature is around 350 degrees Celsius.
4. Prepare the microscope: Start the microscope, place the circuit board on the base plate and fix it, adjust it to the appropriate height and magnification, and position the components.
5. Coat the soldering iron tip with tin: During the heating process of the soldering iron tip, lightly apply the solder wire on the soldering iron tip. This helps improve heat transfer efficiency.
6. Solder connection: Gently touch the soldering iron tip to the component to be connected, and then lightly apply the melted solder wire to ensure a good connection. Be careful not to press too hard on the components to avoid damaging them.

(Under AD409Pro)

7. Clean the soldering iron tip: During use, clean the soldering iron tip regularly to remove welding slag and dirt to maintain its effectiveness.
8. Turn off the soldering iron: After using the soldering iron, coat the soldering iron head with tin and put it back on the soldering iron stand to avoid falling and getting burned. Turn off the power switch.


Please note that soldering irons can be very hot, so be careful when using them and avoid touching the tip to avoid burns. If you are a beginner, it is best to practice under the guidance of an experienced person to ensure you complete the welding task safely and effectively.

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