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/)
First Put the IC on the Pad!
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Press It by Hand After Aligning!
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Then Use the Melted Wire to Solder the IC's Feet to Secure the IC!
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All Four Sides Are Fixed With Melted Wire!
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Evenly Solder the Wire on the Head of the IC Foot After Fixing!
![5.jpg](/proxy/?url=https://content.instructables.com/F05/SU5E/JXCCW0RT/F05SU5EJXCCW0RT.jpg&filename=5.jpg)
All Around the Wire!
![6.jpg](/proxy/?url=https://content.instructables.com/FQF/QRBO/JXCCW0SZ/FQFQRBOJXCCW0SZ.jpg&filename=6.jpg)
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!
![7.jpg](/proxy/?url=https://content.instructables.com/FU2/212G/JXCCW0U3/FU2212GJXCCW0U3.jpg&filename=7.jpg)
Put the Tip in the Rosin and Remove the Excess Solder From the Tip of the Tip!
![8.jpg](/proxy/?url=https://content.instructables.com/F4S/8NLH/JXCCW0V9/F4S8NLHJXCCW0V9.jpg&filename=8.jpg)
Put the Tip in the Rosin and Remove the Excess Solder From the Tip of the Tip!
![9.jpg](/proxy/?url=https://content.instructables.com/FCU/IIBK/JXCCW0YE/FCUIIBKJXCCW0YE.jpg&filename=9.jpg)
Put the Rosin-coated Soldering Iron Tip Quickly Onto the Soldered Portion of the Slanted PCB Head!
![10.jpg](/proxy/?url=https://content.instructables.com/FPA/6FFD/JXCCW0YX/FPA6FFDJXCCW0YX.jpg&filename=10.jpg)
The Next Action Will Be the Core of the Entire Drag Welding: Make the Soldering Iron Move As Follows!
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Repeat the Above Actions to Achieve the Following Effects!
![12.jpg](/proxy/?url=https://content.instructables.com/FTG/4J14/JXCCW10Q/FTG4J14JXCCW10Q.jpg&filename=12.jpg)
Use the Same Method on All Sides!
![13.jpg](/proxy/?url=https://content.instructables.com/FLY/55L8/JXCCW12N/FLY55L8JXCCW12N.jpg&filename=13.jpg)
Fixed Patch!
![14.jpg](/proxy/?url=https://content.instructables.com/FHX/EUSJ/JXCCW137/FHXEUSJJXCCW137.jpg&filename=14.jpg)
Sticking Solder
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Fixed IC Pin
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Drag Welding!
![17.jpg](/proxy/?url=https://content.instructables.com/FN3/IR20/JXCCW15H/FN3IR20JXCCW15H.jpg&filename=17.jpg)
SSOP Operation!
![18.jpg](/proxy/?url=https://content.instructables.com/FT8/APJB/JXCCW165/FT8APJBJXCCW165.jpg&filename=18.jpg)
The Welding Is Completed!
![18.jpg](/proxy/?url=https://content.instructables.com/F3C/RY3S/JXCCW182/F3CRY3SJXCCW182.jpg&filename=18.jpg)
A lot of rosin on the surface!
Wash With Alcohol!
![19.jpg](/proxy/?url=https://content.instructables.com/FOW/GCWC/JXCCW1A2/FOWGCWCJXCCW1A2.jpg&filename=19.jpg)
The Final One!
![20.jpg](/proxy/?url=https://content.instructables.com/F2U/AEMY/JXCCW1AR/F2UAEMYJXCCW1AR.jpg&filename=20.jpg)