Electronic circuit soldering and current welding materials

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In electronic circuit soldering, two or more electronic components are connected to each other by soldering. To transmit signals on the circuit board, the soldering process must be used to create an electrical connection between the circuit board and electronic components. The basic tools used in soldering include a soldering iron, solder wire, and flux. Please refer to the following article from The Tech for more details

View more: Solder Paste

What is electronic circuit soldering?

Electronic circuit soldering is the process of joining two or more electronic parts together by melting solder around the connection point. Solder is a metal alloy, and when the temperature drops, it creates a tight electrical bond between the parts. Electronic circuit soldering tools include a soldering iron (Soldering Iron), a soldering station (Soldering Station), a soldering iron tip, an ordinary or copper sponge, a soldering iron holder, solder (Solder), supporting equipment, etc.

electronic circuit soldering

The materials used to solder electronic circuits

Welding consumables can be divided into several different categories based on their appearance:

Welding wire

Solder wire is one of the most popular and widely used soldering materials when repairing electronic circuits with a soldering iron or soldering station. Welding wire is usually rolled up and can be cut into small pieces for use.

Lead solder wire: This is a type of electronic circuit solder wire that contains lead, a component with a low melting temperature that is easy to use.

Lead-free solder wire: This is a type of electronic circuit solder wire that does not contain lead, which is safer for the environment and the human body. This type of solder wire is usually more expensive and is used in electronic devices imported into some international markets, such as Europe and America.

Flux core solder wire: This is an electronic circuit solder wire spool with a core containing flux to ensure a stronger bond by removing dirt remaining on the surface after soldering.

Halogen-free solder wire: This is a spool of solder wire with a core containing no halogen components, making it environmentally friendly. This range is suitable for many markets that require restrictions on halogen use.

electronic circuit soldering

Solder bar

The solder bar is also a popular soldering material. This type is commonly used in automatic wave soldering. In this process, the solder is melted into a liquid form, and then the next step is to assemble the electronic components into the circuit. Today, most solder bars are lead-free, making the wave soldering process less toxic and more environmentally friendly.

electronic circuit soldering

Solder paste

Solder paste is a type of solder paste widely used in the automatic line of the SMT (Surface Mounted Technology) process. The circuit board assembly process is widely used and has many advantages. Solder paste is also used in conjunction with automatic solder paste robots in other electronic circuit assembly lines.

electronic circuit soldering

Electronic solder ball BGA

BGA electronic solder balls are a type of solder that is made from metal alloys to create a compound in the solder. These solder beads are commonly used in semiconductor packaging applications such as PBGA, CBGA, TBGA, CSP, and Flip Chip. The selection of weld bead depends on the diameter and alloy composition.

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Solder flux

Flux is a kind of flux used to help solder materials (solder paste, solder coils, and solder rods) adhere better to the surface of electronic circuits. Because of the variety of applications and requirements in electronic circuit assembly and semiconductor packaging, flux technology has developed and created a variety of flux suitable for different applications:

  • No-clean flux (NC) is a type of flux that does not leave any excess residue on the surface of electronic circuit soldering. Therefore, it is suitable for large production lines and circuit surfaces that are not too complex. This helps reduce the cost of using cleaning agents to clean flux.
  • Halogen-free flux is a type of flux that does not contain halogen, a chemical vapor in the air that is not environmentally friendly and can cause rust on the circuit board.
  • Water-soluble flux is an environmentally safe type of flux. This type is used in electronic applications due to its ability to be easily and effectively cleaned after the soldering process.
  • Wave Soldering Flux: Used for large production processes, this type is designed for automatic soldering on circuit boards and has good rust resistance.

View more: Solder Wire

Hopefully, the article has given you a lot of useful information about electronic circuit soldering as well as common materials. For more information, do not hesitate to contact The Tech for the best advice!

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