SMD vs THT vs SMT | Difference Explained


When working with electronics, it’s crucial to understand the distinctions between SMD, THT, and SMT. Surface-mount device, through-hole technology, and surface-mount technology are the three abbreviations that you’ll see most often when you’re referencing components in your circuit boards.

Let’s take a look at each of these abbreviations so that you can better understand what they mean and how they might impact your work. Each of these methods of attaching electronic components has its own advantages and disadvantages.

While SMT is an excellent choice for high-reliability products, SMD and THT remain viable options for many applications. These technologies are similar in that they both use leads to electrically contact components. The two main differences between the two processes involve how the leads are attached to the devices and how small the devices themselves are.



Definition of SMD, THT, and SMT

SMD, THT, and SMT are the three main technology for mounting electronic components onto a printed circuit board that uses an integrated circuit.

Here are the difference and definitions of SMD, THT, and SMD:



What is SMD?

Surface mount devices (SMDs) were developed to make it easier for manufacturers to assemble electronics by allowing them to be placed in a location that is more accessible.

It has tiny electronic components that can be soldered directly to a PCB, and they typically have a small metal pad on their bottom for contact with the circuit board. They are not inserted into sockets like through-hole components. Some SMDs have leads that extend beyond their bodies, while others have leads that are flush with their bodies.



What is THT?

In this process, the components are placed into holes in the PCB, and then wires are soldered to the pads on the underside of the board. This technique is used when creating small- to medium-sized PCBs with fewer than 100 components.

Through-the-Hole is a fabrication process used by many manufacturers. It’s a great alternative to surface-mount manufacturing, which is typically used for smaller PCBs with little detail.



What is SMT?

This is a method of soldering electronic components to circuit boards. The SMT process involves placing the components on a board with their leads sticking out, then applying solder paste to the leads and heating them up with a soldering iron.

SMT is used to make it easier for manufacturers to mass-produce their products. Instead of having to build an entire circuit onto a single board, they can simply connect all the components together with small chips that are mounted right on the surface of the board.

What is the Difference between SMD, THT, and SMT?

When you’re working on building an electronic device, it’s important to know what each of the components is and how Surface Mount Components (SMD), Through Hole technology (THT), and Surface Mount Technology (SMT) compared to each other.



Comparing THT vs SMT

The main difference between these two techniques is that THT requires you to solder through holes on your board while SMT places components directly onto the surface of your board.

SMT has a much lower failure rate than THT because it doesn’t use leads and therefore doesn’t have any points where solder can come loose.

SMT has a higher density than THT, meaning that you can fit more components into a smaller space. This means that you can get more out of a given amount of material in terms of performance, but it also makes it harder for beginners who aren’t familiar with how SMTs work.



Comparing SMD vs THT

SMDs are often used in consumer electronics, such as televisions and computers, but they can also be found in industrial equipment, medical devices, and other electronic products. Because they’re so small, SMDs don’t take up much space on a PCB, which means they can be packed close to one another without increasing the size of the overall product.

THT stands for through-hole technology, and it refers to a style of mounting an IC on a PCB that requires the leads to be inserted into holes in the board. The leads can then be soldered into place, forming an electrical connection between the chip and the PCB. This style of mounting allows manufacturers to create larger ICs than they could with SMD technology.

Comparing SMD vs SMT

SMD refers to a type of electronic component that has been mounted directly on a PCB using solder. In comparison, SMT relates to the technology or method of placing the SMDs.

SMD = components used. SMT = technology used to put in the components.

The SMT method is often used for manufacturing large quantities of electronic circuits or when it’s necessary for the circuit boards themselves be flat, thin, and lightweight.

Types of SMD Components for SMT

There are several different types of SMD components that can be used in surface-mount technology (SMT), including resistors, capacitors, inductors, diodes, transistors, and more. These components can be used to create a variety of devices such as microphones, speakers, sensors, power supplies, and more.

Small Outline Transistors

Small Outline Transistors

Small Outline Transistors

Low-power semiconductor devices with three or four terminals. These transistors are used in many electronic products and microelectronics. They are made to fit into small spaces and are ideal for use in portable and miniature electronic devices.

Small Outline Integrated Circuit

Made from a single piece of molded plastic and include leads on the bottom of the package. The leads form part of the circuit and allow for easy connection to other components in an electronic system.

The Small Outline Integrated Circuit is designed for surface mounting on printed circuit boards. Surface mounting allows for denser packing and lowers cost compared to other methods such as through-hole mounting where wires must be soldered to the pins on the ICs.

Plastic Leaded Chip Carriers

Plastic Leaded Chip Carriers

Plastic Leaded Chip Carriers

The most common type of integrated circuit packaging. These plastic devices can be used to hold both silicon and ceramic semiconductor components. They are used in a wide range of applications including computers, telecommunications equipment, and medical devices.

Small Outline J Packages

J-Packages are a type of surface-mount plastic-molded integrated circuit package with J-formed leads. They have several advantages over other packages, including the fact that they can be soldered by hand and their leads are not connected to each other until the chip is inserted into a circuit board. This makes them ideal for use in applications where space is at a premium, such as phones or computers.

Fine Pitch SMD Packages

Fine-pitch surface mount packages are small and easily mass-produced. They are used in many applications and are popular thanks to their small size, low cost, and ease of use. Fine-pitch SMD packages have a smaller lead spacing than other types of surface mount packages, which makes them ideal for high-density interconnections such as those found on printed circuit boards.

Ball Grid Array

Ball Grid Array

Ball Grid Array

A Ball Grid Array (BGA) is a type of surface-mount packaging (SMT) used in microelectronics. A BGA‘s solder balls are arranged in a square or rectangular pattern on the underside of the IC, and its leads are mounted on the upper side of the IC’s package. To install it, the device is placed upside down with its pads facing up and then heated to melt solder balls that anchor it to its substrate.

Advantages of SMT

SMT is a widely used form of surface-mount technology that has a wide variety of applications, although it is most commonly used in mass-produced electronic products. With SMT components being more complex than through-hole ones, it can be difficult to find a supplier who can provide you with the components that you need. Below are some advantages of SMT.

Smaller PCB Design

SMT has a smaller PCB design, which allows for more compact electronic devices, such as mobile phones or digital cameras. It also reduces the amount of space needed by the components on the board and makes it possible to fit more components into a given area than would be possible with a through-hole.

Enhanced Mechanical Performance

The advantages of SMT are numerous. For one thing, it has enhanced mechanical performance. This is because the parts are soldered directly onto the surface of the board rather than being mounted from below as in conventional component placement.

SMT’s enhanced mechanical performance, allows components to be made with very high precision. The components are also less likely to fail because of their increased strength and durability.

Higher Densities

SMT has higher densities than other assembly methods. This means that you can fit more components into a smaller space. It also allows for more precise control over the distance between components and the relative positioning of each component.

Quicker Assembly

One of the biggest advantages of SMT is that it has a quicker assembly process. This is because you don’t have to solder each component individually and place them on the board one at a time. Instead, you can use a pick-and-place machine or an automated soldering machine to automatically place all the components onto your PCB.

SMT Low Manufacturing Cost

SMT Low Manufacturing Costs

Low Manufacturing Costs

The cost of SMT manufacturing is lower than that of other electronic manufacturing processes. The cost difference between the two methods is due to the fact that in traditional PCB manufacturing, the components are soldered by hand to the board, whereas in SMT assembly, the components are inserted into the board with a machine.

Advantages of THT

Through-hole technology is a more mature, reliable, and cost-effective process for most electronics. However, there are many other advantages of THT besides low cost. In this post, we’ll review the advantages of THT for electronics manufacturing and assembly.

Stronger Mechanical Bond

There are many advantages to THT, but one of the most important is that it has a stronger mechanical bond than SMT. In THT, there is a strong thermally activated intermolecular force between the solder and the substrate. This means that once the solder melts and flows, it will stay in place until it cools down again.

Resistance to Wear and Tear

THT has resistance to wear and tear, which is a huge advantage to its use of THT. The PCB will not rust or corrode, so it can be used in many different environments without worrying about damage. This makes it ideal for use in harsh environments where other PCBs may fail.

THT PCB Prototyping

THT PCB Prototyping

Ideal for Fast Prototyping

THT is ideal for fast prototyping. This is because of its simplicity and speed. THT has the advantage of being able to produce a prototype in a short period of time, allowing for faster iterations and rapid development. Additionally, the materials used in THT are relatively cheap and easy to acquire.

Things to Consider in Manufacturing SMD, THT, or SMT

In the world of electronics manufacturing, there are many different options to consider. There are several types of components, each with its own advantages and disadvantages. When choosing which type of component to use in your product, there are several factors to consider.

The first factor is cost. The more expensive components are more reliable and have longer lifespans than cheaper ones, but they also require more space inside the product and cost more money to manufacture. If you need something that will last a long time and be reliable, this might be the way to go.

Another factor is size and shape. The smaller components tend to be more efficient at transferring heat from one place to another, but they can’t be used as easily if you want to make something large enough for human use. They also take up more space inside your products than larger ones do.

The third factor is reliability. The most reliable components tend not only to last longer than others but also perform better under stress or at high temperatures or pressures (if applicable). They’re often made out of stronger materials that won’t break down as easily over time either!

PCBTok as SMD, THT, SMT Manufacturer

PCBTok as SMD, THT, SMT Manufacturer

Why Choose PCBTok as your SMD, THT, or SMT PCB Manufacturer?

PCBTok is a leading PCB manufacturing company that specializes in SMD, THT, and SMT PCBs. We have been providing our customers with high-quality PCBs for more than a decade.

As a customer-oriented company, we aim to provide the best quality services and products to our customers. Our mission is to provide customers with professional PCB manufacturing services at affordable prices and on-time delivery. We are committed to providing excellent customer service and we will do everything possible to meet your every need.

Our factory is equipped with state-of-the-art equipment and technology which allows us to produce high-quality PCBs for our clients. We offer low-cost SMD, THT, and SMT manufacturing services with quick turnaround times. Our team of experienced professionals will guide you through the whole process. From start to finish you can get your project done quickly, efficiently, and on time.

Our mission is simple: we want to give our clients the best possible service. Also, by helping them achieve their goals while ensuring that they are satisfied with their end result!


In general, the three technologies have their own differences and are used in different applications. They may all be applicable to your application but choosing the best one can depend on numerous factors. One of them is cost – which isn’t always an easy factor to quantify. Understanding the process of each soldering method may help you determine if it’s the right one for you. At the end of the day, as long as your project gets completed as desired. Keep in mind that no matter which technology you choose, PCBTok is the one to trust!

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