In the daily work of SMT patch processing, whether it is power electronics, power switches, industrial controls or charging piles, most of the above are DIP plug-in materials. However, because of the inconsistency of temperature resistance and processing requirements of many materials and patch materials, manual soldering is required, and wing-shaped pin components are the most common. So how much do you know about the manual soldering method of wing-shaped pins? Today, Sanjing will share with you:

Wing-shaped pin components include three-welded potentiometers, SOT, SOP, and QFP.

⑴Welding one by one

1. Clamp the device with tweezers, align the direction so that the pins are aligned with the PCB pads, and place them in the center on the corresponding pads.

2. Use a conical or chisel-shaped soldering iron tip, and solder the device diagonally 1~2 pins.

3. Starting from the first pin, solder joints one by one in order, and add a little solder wire with a diameter of 0.5mm (or thinner) to solder all the pins on both sides or around the device. (When the pitch is narrow, you can apply flux to control the amount of solder wire fed, and then use the transfer method to weld one by one.)

⑵ Drag welding method

1. Clamp the device with tweezers, align the polarity and direction, align the pin with the pad, and place it on the corresponding pad in the center. Use a cone or chisel-shaped soldering iron tip to solder the device diagonally 1~2 Pins.

2. Apply flux.

3. Tin the tip of the soldering iron. 4. Starting from the first pin, drag the soldering iron slowly and uniformly downwards in order to solder both sides of the device firmly.

The above is about the manual soldering method of wing-shaped pin components, I hope it will be helpful to everyone!