Soldering Guide for SMD Components - Drag Welding Tips

The effective way to perform patch welding is drag welding. If you are familiar with drag welding, you can basically use a soldering iron + rosin to complete the soldering of all patches.

We specifically mentioned the tools before welding:
It is best to use a flat-head soldering iron with a slanted opening. Considering the anti-static requirements for actual soldering in the future, it is recommended to use a soldering station!

Closer to home:

First put the IC on the pad

Squeeze by hand after alignment

Then use the melted wire to randomly solder the IC's feet to fix the IC.

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