==== RTT stands for Repair Technical Terms ==== \\ Here, a Repair Technical Term refers to the designation of a specific action performed during a technical repair. These terms are named in a highly intuitive manner, and they are intended to serve as a nationwide standard that we should adopt and use \\ \\ ---- ===Soldering Technical Terms=== ==1. CLSS (Component Lead Side Soldering)== \\ It typically involves placing a component on the PCB pads, securing it with tweezers, and soldering the lead pads using a soldering iron This technique is primarily used for electronic components that have leads \\ \\ ==2. CPSS (Component Pins Side Soldering)== \\ It typically involves placing a component on the PCB pads, securing it with tweezers, and soldering the pin pads using a soldering iron This technique is primarily used for SMD-type electronic components that have pins (pads) \\ \\ ==3. CLHS (Component Lead Heating Soldering)== \\ This method involves placing an electronic component on PCB pads that have pre-applied solder and soldering it using a hot air gun. This technique is mainly used for small PCBs with high component density or in locations where soldering with a soldering iron is difficult, and is typically applied when soldering SMD components such as MLCCs. If space permits, using CPSS is recommended whenever possible \\ \\ ==3. QFN-SOB (QFN Soldering on board)== \\ This is a method for soldering QFN-type ICs by pre-applying solder on the PCB pads and then using a hot air gun to solder the IC. This term can be used to refer to the following approaches: Evenly applying solder to eliminate height differences, placing the QFN IC, and soldering it using a hot air gun. Applying solder, placing the QFN IC, and using a hot air gun while pressing the IC with tweezers or other tools to ensure maximum contact with the PCB, then cleaning up any excess solder \\ \\ ---- ===Reconstruction Technical Terms=== \\