How to solder? - Leading PCB Assembly Manufacturer, Printed Circuit Board(PCB)

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1. Move quickly. Unfortunately, it's quite easy to damage a print circuit board component or the board with too much heat. For the most part, however, you can keep the components and the PCB board safe by moving swiftly. Keep a finger on the board nearby to ensure that it doesn't get too hot.

2. Consider using heat sinks for sensitive components. Some components (diodes, transistors, etc.) are quite susceptible to heat damage and require a small aluminum heat-sink clipped on to their leads on the opposite side of the PCB. Small aluminum heat sinks can be purchased through PCB electronics supply houses. Hemostats (small) can also be used.

3. Learn to recognize when there is enough solder present. After a proper application of solder PCB , the solder PCB will be shiny and not dull. Visible indications are the best way to know if your solder PCB joint is good. The solder ;PCB needs to melt with the surface of the PCB electronic components, rather than the tip of the soldering iron. This way, when the solder cools, it forms an alloy with the surface of the metal.

4. Keep the soldering iron clean. Burnt flux, rosin from the core of the PCB solder, or plastic sheaths from wires may all burn onto the PCB soldering iron. Such contaminants prevent the formation of a clean alloy between the PCB electronic components. This is undesirable, because it raises the electrical resistance and also reduces the mechanical strength of the solder joint. A clean tip is shiny all the way around, without burnt gunk on it.

5. Make sure to let the solder cool completely before moving the components. This cooling should only take five to ten seconds. If the components are too hot to handle, use needle nose pliers, or a tool called helping hands which consists of two alligator clips attached to a little articulated stand. If you watch carefully, the cooling solder will settle right before your eyes.

Kingsheng offers both conventional flux soldering and S-Bond soldering. As an Active Solder, S-Bond solder is flux-free eliminating the potential of contamination and corrosion associated with fluxes. Additionally, S-Bond’s limited capillary action is beneficial in that it “stays where you put it” which helps prevent solder getting into enclosures and other exclusion areas.

Our conventional solder joining assembly services supplement our flux free S-Bond bonding services and are offered when S-Bond joining is not suitable or more costly.

Our engineering and manufacturing staff has the expertise and experience to solder assemble your components using either conventional soldering methods or S-Bond solder, depending on the application.