Solder Stencils Articles

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Lead-Bearing Solder Paste Applications
Solder paste is necessary in the manufacturing of PCBs (printed circuit boards), as it is used to connect the surface mount components to the pads on the PCB. It acts like an adhesive or a glue that ensures surface mount parts are secure on the board. Besides holding the PCB components in place, a good solder paste also ensures an excellent electronic bond between the PCB and its components. Hence, it is typically formulated with conductive materials, like lead and tin. Solder paste is basically powdered metal which usually comes suspended in flux. The paste consistency of the solder serves as...

Solder Dross Recycling ? The Reasons to Consider It
If you are a PCB assembly expert, you are most likely familiar with the layer of metal that accumulates on molten solder’s smooth surface called solder dross. The material is made of impurities and oxidized metals that naturally gather when molten solder becomes exposed to air and the manufacturing environment. Solder dross is unavoidable, regardless of what alloy is being used. Solder dross is normal in the process of PCB assembly and wave soldering and typically accounts for up to 50% of bar solder in a solder pot. Dross used to be considered as waste, but with the advancement in dross...

A Guide for Lead Solder Paste
PCB assembly requires high-quality materials and products that can ensure proper connection between the surface mount components and the printed circuit board. One of the necessary materials for this job is the solder paste. Solder paste is a combination of fusible metal alloy, commonly used while creating joints during the manufacturing of printed circuit boards.  The purpose of solder paste is to hold certain components of electronics together, while making sure that the surface mount components are bound properly to the circuit board. Solder paste is essential for thermal and electrica...

A Guide to Different Types of Solder Flux
Soldering is an essential part of electronics assembly, as it ensures proper connections of components on the printed circuit board. It requires the use of an appropriate solder, which can sometimes be administered with a flux to ensure good joints and avoid problems like bad connections and failure to create a reliable joint. To prevent bonding issues, the soldering process involves a flux agent to facilitate soldering. When choosing solder flux, you need to consider the kind of circuit board you are using, the type and density of electronic components that must be soldered, the solder abilit...

Uses of Stencils in Electronics
The term stencil might remind you of your childhood days of crafting beautiful drawings with colorful cutouts of plastic that would serve as a guide to create perfect shapes. With the advent of electronics engineering, the funny world of stencils is now industrialized, and has become highly technical. By definition, stencils are just a thin sheet of plastic or Mylar with some tiny holes cut out in it. They are used in electrical engineering for various applications. Let’s see some of the uses and advantages of stencils in electronics and fabrication of circuit boards.Advantages of stenci...

Solder Balls and their Negative Effect on the PCB Assembly Process
If you are a PCB manufacturer, the word ‘solder balls’ must be extremely familiar to you. In fact, you have likely marked the phenomenon of solder ball formation as one of the greatest challenges of your SMT reflow process. The issue is fairly common and can be caused by a host of different factors, mainly poor process conditions, and can genuinely compromise the electrical reliability of the assembled printed circuit board. This article presents a comprehensive overview of the solder ball defect along with an insight into possible causes of the same and also lists out recommended ...

Things to Consider While Choosing Lead-Bearing Solder Paste
PCB (printed circuit board) manufacturing cannot be completed without solder paste, the material used to connect the surface mount parts to the board’s pads. There are various types of solder pastes available, but those that contain lead are widely preferred. Lead-bearing solder paste is manufactured to meet the unique requirements of tin-lead soldering processes to ensure excellent and reliable print volume repeatability.Here are some things to keep in mind before deciding to buy lead-bearing solder paste:Types of lead-bearing solder pastesLead-bearing solder paste can be made in differ...

Work Role of Different Kinds of Soldering Torches
Brazing refers to the joining of two metals. It is easy to do and substitute the welding part quite efficiently. It most often makes use of torches to join two metals. Propane torches are one such equipment which is popularly used for brazing. These can be easily sourced from any of the hardware store or a plumbing supply house. The very first step in propane brazing is to clean the metal that you plan to braze. For cleaning, one can make use of sandpaper to remove oxidation while acetone should be used to get rid of grease. Also, use simple soap and water solution to remove the remaining dust...

Low Temperature Solder for PCB Assembly - The Need, the Benefits and the Options
With the increased penetration of modern consumer electronics in the market, such as mobile phones and music devices, the general push for product development has been largely focused on miniaturization. And as electronic components get smaller and smaller, the commercial world is also moving steadily towards the goal of sustainable and eco-friendly growth - marked by the introduction of RoHS compliant lead-free assembly of electronic devices. As a result, low temperature solder has emerged as the most effective solution to match these new trends in the PCB engineering industry. Let’s ta...

Tips on Solder Paste Application to a PCB
Solder paste is a crucial aspect of a PCB assembly, especially when reflow soldering techniques are used. It is typically a mixture of specially formulated flux and solder spheres. Hence, the solder creates a type of paste that can be integrated onto the surface of a PCB without causing problems with how the board should function. There are different types of solder pastes for different applications, but the best one for PCB assembly is something that can be printed onto the surface of the product in the place where it is needed. To use solder paste properly, you need to follow certain steps f...

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