How to Solder – A detailed Tutorial for Beginners and Hobbyists

The main focus of this Tutorial is to make you learn how to solder and to solder what different tools are used.

Soldering is a simple process of joining two or more electronic parts by melting through the heating device in such a way that solder melted around the connections.

Here in this Tutorial first we learn soldering how to wires and than solder how to solder to a circuit board electronic components.

Preparing Readiness for Soldering-

Power on the solder iron and start heating the iron. If the iron is temperature controlled to ensure that soldering tip temperature shall be minimum 315°C and maximum 360°C for tin-lead soldering and between 360°C to 450°C for lead-free soldering.

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Keep ready the essential tools like wire cutters,solder flux,solder wire and other required accessories which we will discuss one by one latter in this article.

Clean and Tinning The Tip

Before start and soldering activity prepare your soldering ion and when it hot first needs to clean the tip to remove old solder from it. For that you can use wet sponge or copper scouring pad or any other applicable substance.

Before you start soldering you need to tining the solder iron tip with solder that makes the tip heat transfer faster for making soldering easier. Tinning process also protect the tip and reduce wear losses.

How to Solder
Step 1Melt some new solder onto the tip

how to solder
Step 2-Wet sponge or copper scouring to clean it

How to Solder a Circuit Board

In this section you will learn soldering how to solder SMD and also solder through-hole components to a solder circuit boards.

Mainly hand soldering is recommended soldering on circuit boards for prototyping, Installation, and repairing activities. Equipment required as per below.

1. Soldering how to SMD components

Soldering how to surface mount devices the step by step process as per below with required list of material and tools.

Equipment required

– Soldering Iron
– Chisel or conical tip
– Brass wool
– Wood stick or a pair of tweezers

Materials required

– Flux-cored solder
– Solder Flux
– Cleaner
– lint-free tissue/wipes

Step 1: Clean work area of any contamination, oxides or residues and Install soldering iron tip in hand-piece.

Step 2: Apply flux on one soldering pad, Clean the tip from Brass wool and tining the tip with small solder. Prefill one soldering pad with solder

Step 3: Place the component in position and hold it with a wooden stick or a pair of tweezers.Place the tip at the junction between the prefilled pad and termination area of component.

Step 4: Place the tip at the junction between the prefilled pad and termination area of component.Observe complete solder melt.

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Clean oxides or residues
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Apply flux on pad
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Heat and solder Component

3. How To Solder two Wires

Step 1: Clean to soldering iron tip from oxides and do tinning the tip with help of solder for smooth heat transfer.

Step 2: Remove wire insulator and apply a layer of solder flux. After that heat solder wire and wire that needs to joint hold iron tip till wire fully coated with solder.

Step 3: Joint both tinned wires together and heat up with solder iron for few seconds and remove iron to cool the joints.

to solder
Tinning soldering iron Tips
soldering how to
Tinning the wire solder
Heat up and cools for joint

Defects Due to incorrect use of soldering iron tips

Metal plating tips of soldering iron wear out over time. Plating life of soldering iron tip on a type of soldering application, types of flux and solder paste used and the soldering skills of the operator.

Generally, the manufacturer does not give any guarantee of soldering iron tips. Usage of defective soldering Iron tips results below soldering defects.

How to Solder

Cracks: – Due to Excessive pressure applied with a tip to a contact area resulting in a bend of the will cause the cracks in the tip coating. To avoid this problem, select the tip that best suits your work.

Non-wetting: – Oxidation of tip coating causes heat conductivity reduction due to formed oxides that will not allow proper wetting of molten solder paste.

The best remedy to avoid such consequences is to frequently clean solder tip with a damp sponge, Use the lowest possible temperature, not recommend using active solder flux.

Corrosion: –Usage of Active solder paste at high temperature (>450 °C) the coating of the tip can be possible to damage partially or completely.

For remedy use less active flux, use clean and damp sponges, and use solder that has RMA flux type.

Soldering Tools and Materials

The quality of soldering mainly depends on soldering iron tip geometry, Selection of Flex, and instruction followed. Hand Holding is not so easy to work as normal people think.

1. Soldering iron

To do a soldering you need a good quality soldering iron or temperature controlled soldering station.Soldering iron good heat source that heats up and cools down very quickly and to maintain a constant temperature.

To select best solder – 5 Top Best Soldering irons for Electronics 2020

Soldering irons soldering components recommended as Low wattage (15-40 watt) soldering irons but while more powerful circuit boards (60-140 watt) soldering irons can be considered.

There are some worldwide leaders in manufacturing and supply of soldering tools like Hakko, Weller etc. for more details and buying guide for Best Soldering Irons for 2020.

2. Solder wire

Solder wire is the main consumable material used in hand comes in various thickness with leaded and lead-free versions.

You use thin solder wires for normal electronic component soldering and thick when needed to solder large solder surfaces.

Read Article to find best solder- 5 Best Solder for Electronics Repairing

For more information and technical specs further details on solder allows check out the wikipedia article.I normally solder around .025″ wire in daily soldering jobs.

3. Other materials

o solder Apart from above soldering tools there are few other tools that are also used to make solid quality soldering joints.

A list of other tools are Soldering iron holder, cleaning sponge, Exhaust fan, Tools to work with wires like wire cutters, needle nose pliers, a wire stripper etc., Safety goggles.

Final words

Here in this article we have discussed in details how to solder smd solder circuit boards and also how to solder wires. Soldering onto a circuit board is a simple job but required more precision in work.

How to soldering circuit boards is very common problem of every electronics engineer but doing some practice and learning to solder can solve issue.

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Electronics Engineer,Blogger and a Young Entrepreneur by passion.With more than 18 years of broad experience in New Product Introduction and Process Improvement.

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