Soldering Circuit Boards: 8 Tips and Tricks for Beginners

May 10, 2023

In essentially every electronic device that contains a circuit board, the components are attached to one another using soldering techniques. Soldering is basically the process of melting solder around a connection between two or more electric parts. Solder is a metal alloy that creates a strong electrical bond between the parts once it cools.

The key to soldering is the use of a hand tool known as a soldering iron, which plugs in and heats up to temperatures as high as 896 degrees Fahrenheit to be able to melt the solder.

The soldering process is fairly straightforward and starts with mounting the component in the circuit board. Once the leads are inserted in the circuit board’s holes, you can heat the pad and the lead with the soldering iron for 3-4 seconds, then apply solder to the joint, allow it to cool, and snip the leads.

In most cases, soldering creates connections that are intended to be permanent. However, it can also be reversed using a desoldering tool.

What are some of the best tips related to soldering?

If you are relatively new to soldering, there are a number of important tips and tricks to know that relate to the soldering process, which will make your soldering go much smoother. The following are some of the most important things to keep in mind whenever you need to solder something:

1. Have the right equipment on hand

Of course, the main piece of equipment that you will need to do any kind of soldering is your soldering iron. However, that is not all that you must have. You will also need some interchangeable soldering iron tips, which come in various shapes. As well, it helps to have a soldering iron stand to prevent the tip of your soldering iron from coming into contact with flammable materials.

2. Choose a high-quality soldering iron

When it comes to soldering irons, there is a wide range of types and styles, some of which are relatively cheap while others are incredibly expensive. Although it is not necessary to have the most expensive soldering iron, ensure that you get one that is adequately equipped with important features like adjustable heat, a quick heat-up time, solid build quality, and a switchable tip.

If you are going to be doing a lot of soldering, you may want to invest in a soldering station. This is the more advanced version of the standalone soldering pen, as it makes it much easier to work due to its controlled temperature settings.

3. Use the correct soldering iron tip shape and size

There are many different shapes and sizes of iron tips, including conical, chisel, and beveled, so that you can fine-tune the area that you need to heat. It is important that you select the right kind of iron tip for the job.

For example, when soldering circuit boards, a conical tip is best for delivering heat to smaller areas without affecting the surroundings because of its fine tip. However, a chisel tip is better for soldering wires to other large components due to its broad and flat-shaped tip.

4. Use the correct solder

Since soldering is done in various industries, there are many types of solder that can be purchased. The most common solder to use for soldering circuit boards for modern electronics is lead-free rosin-core solder. You should avoid acid-core solder in electronics because the acid will destroy the circuit parts.

In most cases, it is best to go with the thinnest solder that you can find, as this will make it less likely that you spill too much solder on your joints.

5. Tin and clean your iron tips

Before getting started, an important part of the soldering preparation process includes tinning your iron tips. Tinning involves coating your iron tip with a bit of solder before making contact with your device.

It is also important to regularly clean your iron tips as you are soldering, which can be done by thoroughly wiping them on a wet sponge.

6. Properly apply heat

To achieve the best possible results, it is necessary to keep the sequencing of your actions in mind. It is best to begin by applying the iron tip to the joint and adding soldering, and allowing it to spread only once the joint is sufficiently heated. This sequence should be done as quickly as possible because you can fry a solder pad or component if you hold your iron on the joint for too long.

7. Allow solder joints to cool on their own

Although it may be tempting to blow on your solder joints to cool them down faster, this is never a good idea. If the joint cools too fast because you have blown on it, it could crystalize and become brittle. This could result in the joint being cold or ineffective.

8. Always inspect your solder joints

It is crucial to always inspect your solder joints after forming them because if even one of them is poorly made, it can lead to noise or failure in the circuit. It takes much longer to locate the problematic joint if you wait until after the circuit is complete to begin inspecting the joints. If you inspect each one immediately after forming it, though, you will know right away if there is an issue.

Remember that a good solder joint has a shiny finish and not too much solder. If you have made a bad joint, you just reflow the solder or remove it outright and give it another shot.

Take Advantage of Top-Quality Soldering and Electronic Device Assembly at Circuits Central

If you are worried about your own capacity for soldering circuit boards and you would prefer to leave this important process to professionals, Circuits Central has plenty of experts that can certainly assist with soldering as well as any other step in the electronics manufacturing process that you require help with.

We are seasoned experts in PCB assembly and electronics manufacturing, and have the knowledge, expertise, and tools to provide consistently top-quality work. Whether you need us to handle the entire process for you or just individual steps, we will definitely be able to take care of your every need in a timely, efficient, and professional manner.

We are constantly updating our approach to PCB assembly to ensure that we employ the latest and most innovative technologies in this process so that we can always produce PCBs that are of the highest quality. We also offer in-house functional testing services so that you can ensure your circuit boards and electronic devices are up to par with your expectations immediately.

For more information about how we can help ensure that your circuit boards have top-quality soldering, or to learn more about our PCB assembly line and production facility, call Circuits Central at 1 (888) 602-7264 or email us at

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