Patch Welding Tutorial
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The effective way to perform patch soldering 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! (Tools are purchase from https://www.censtry.com/)
Step 1: First Put the IC on the Pad!
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Step 2: Press It by Hand After Aligning!
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Step 3: Then Use the Melted Wire to Solder the IC's Feet to Secure the IC!
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Step 4: All Four Sides Are Fixed With Melted Wire!
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Step 5: Evenly Solder the Wire on the Head of the IC Foot After Fixing!
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Step 6: All Around the Wire!
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Step 7: Next Is the Focus of Drag Welding! Put the PCB Obliquely 45 Degrees, You Can Imagine the Wire on the IC Foot Can Flow Down in the Case of Melting!
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Step 8: Put the Tip in the Rosin and Remove the Excess Solder From the Tip of the Tip!
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Step 9: Put the Tip in the Rosin and Remove the Excess Solder From the Tip of the Tip!
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Step 10: Put the Rosin-coated Soldering Iron Tip Quickly Onto the Soldered Portion of the Slanted PCB Head!
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Step 11: The Next Action Will Be the Core of the Entire Drag Welding: Make the Soldering Iron Move As Follows!
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Step 12: Repeat the Above Actions to Achieve the Following Effects!
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Step 13: Use the Same Method on All Sides!
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Step 14: Fixed Patch!
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Step 15: Sticking Solder
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Step 16: Fixed IC Pin
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Step 17: Drag Welding!
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Step 18: SSOP Operation!
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Step 19: The Welding Is Completed!
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A lot of rosin on the surface!
Step 20: Wash With Alcohol!
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Step 21: The Final One!
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