Soldering for Beginners: Electronics Through-Hole & SMD (Udemy.com)

If you can't solder, you can't build, repair or modify electronics. It's the one hands-on skill nearly every project depends on. The good news is that it's completely learnable, and a clean, reliable joint comes far more from technique than from talent.

Soldering shows up everywhere, from the tiniest component on a circuit board to larger assemblies. Whether you're prototyping an idea, building boards, or fixing something on your own workbench, you need connections that are electrically sound, mechanically strong and built to last.

Who's teaching you

I'm a Lead Hardware Engineer with 7+ years in industry, and I've soldered and assembled boards at a production scale of 500+ units a month, using both SMD reflow and through-hole techniques. In this course I'll give you the tools, techniques and troubleshooting know-how to make great joints every time.

How the course is built

Short, focused lectures, most of them under ten minutes, filmed close-up so you can see exactly what the iron, the solder and the joint are doing. You'll watch every technique done on real components and boards, then practise it yourself. Each section builds on the one before, and each ends with a short quiz.

Section 1: getting set up safely. Soldering safety (heat, fumes and lead), the basic hand tools you'll need, the different types of soldering iron and which one to start with, useful accessories, and how to secure your board so your hands are free to work.

Section 2: general-purpose soldering. The types of solder and flux and when to use each, how to set up a new soldering iron properly, and your first real joints: soldering a wire to another wire, and a wire to a component.

Section 3: through-hole (THT) soldering. Soldering resistors, capacitors and other basic components, soldering ICs onto a PCB, and handling awkward parts. You'll also learn how to recognise and fix common mistakes like cold joints and bridges, desolder through-hole parts cleanly with desoldering braid (wick) and a pump, and clean up flux residue from your board afterwards.

Section 4: surface-mount (SMD) soldering.

• PCB basics, so you understand the board you're working on, and where to find free, open-source PCB designs to practise with

• An introduction to SMD components and packages

• Soldering SMD parts with a regular soldering iron, in two parts

• Soldering SMD parts with a hot air gun, in two parts

• Reflow soldering

• Desoldering SMD components without damaging the board

• Repairing damaged PCB traces, so one mistake doesn't mean a ruined board

Section 5: what's next. A short wrap-up with ideas for what to take on now that you can solder, from assembling boards you've designed yourself to repairing the devices around you.

What you'll be able to do at the end

• Choose a suitable soldering iron, tips, solder and flux for the job

• Make clean, reliable through-hole joints and splice wires properly

• Solder SMD components with an iron, with hot air, and by reflow

• Desolder THT and SMD parts without lifting pads

• Spot and fix cold joints, bridges and other common mistakes

• Repair broken traces and rescue boards you might otherwise throw away

Why technique beats talent

Most bad joints have the same few causes: not enough heat, too much solder, no flux, or moving the part before the joint has set. Once you understand what's happening at the joint, you can see what went wrong and fix it. That's the focus throughout: not just what to do, but why it works, so you can solder parts and boards you've never seen before.

Is this course for you?

It's for complete beginners who've never held a soldering iron, hobbyists and makers who want cleaner and more reliable joints, students starting hands-on electronics, and anyone who wants to repair or modify their own devices. No electronics background is needed.

It's probably not for you if you already do fine-pitch rework or BGA work professionally. This course builds a strong, practical foundation in THT and SMD hand-soldering.

What you'll need

• A soldering iron and a few basic supplies to practise as you learn (the course shows you what to choose)

• Some scrap PCBs or spare components to practise on are nice to have, but optional

• No prior soldering or electronics experience

Common questions

Which soldering iron should I buy? The course walks through the main types, from simple fixed-temperature irons to soldering stations, and explains which features actually matter for a beginner, so you can choose one that suits your budget.

Do I need a hot air station for SMD work? No. You'll see SMD soldering with a regular iron first. Hot air and reflow are shown so you know when they're worth adding.

Leaded or lead-free solder? The course explains the main types of solder and flux and how they behave, so you can pick what suits your project and the rules where you live.

What if my first joints look terrible? Everyone's do. There's a full lecture on rectifying common mistakes, and the course shows you what a good joint looks like so you can compare your own. It usually clicks faster than people expect once the heat, the solder and the timing come together.

Can I practise without ruining a real project? Yes, and you should. Old boards from broken devices, cheap practice kits, or a scrap piece of protoboard are ideal. The course also shows you where to find free, open-source PCB designs if you want to order a practice board of your own.

How you'll learn

About three hours of close-up bench video, with English captions corrected by hand. If something isn't working for you at the bench, post in the Q&A with a description of what you're seeing. I read and answer the questions myself.

Quality joints come from proper technique plus the right materials, and technique is something you build through guided, hands-on practice. By the end, you'll solder with the steady confidence of someone who's done it hundreds of times.

More than 20,000 learners have taken my courses. Pick up a skill you'll use for the rest of your electronics journey.