What is Solder?
Solder is an alloy primarily composed of tin, used for joining metals and other materials. It is broadly classified into two categories: lead-containing and lead-free solders. Since the 2000s, lead-free solder has become the mainstream choice globally, driven by environmental considerations. Types of solder include bar solder, wire solder, and solder paste, each selected based on the specific application.
What is Flux?
Flux is a soldering aid typically composed of rosin, along with solvents, activators, and additives. It is used during the flow soldering process, specifically in the assembly of printed circuit boards (PCBs) and electronic components. Flux plays a key role in removing oxide films from the PCB and component electrode areas, thereby facilitating the soldering process.
What is Solder Paste?
Solder paste is an alloy (solder) in fine particle form, blended with flux to create a paste. Utilized in SMT (Surface Mount Technology), it plays a critical role in ensuring the reliable connection between the PCB and electronic components during the assembly process.
How to use Solder Paste
Solder paste is applied to a stencil in a printing machine and precisely printed onto the PCB using a squeegee. Subsequently, electronic components are placed onto the paste using a pick and place machine, and the soldering process is completed by heating in a reflow oven or similar equipment
PCB Assembly
The assembled PCB undergoes any necessary post-processing and is subsequently integrated into a wide range of electronic devices that are essential to our daily lives.
