May 10, 2021|Uncategorised

What Does SMT Mean?

When searching online, you find many definitions for the acronym SMT. But what does SMT mean as it pertains to electronics? Read ahead to find out, as well as its advantages and disadvantages.

What Does SMT Mean?

SMT is the acronym for surface-mount technology. It is a method where electrical components are mounted straight onto the surface of a printed circuit board, also known as PCB. 

Other Common Abbreviations

There are many different ways to discern the components of surface-mount technology. Inclusive of that are many acronyms for the internal makeup of the surface-mount technology, including the following:


This acronym is in regards to surface-mount devices. SMDs are the electromechanical, passive, and active components within the SMT. These items are the primary makeup of the device.


Surface-mount assembly is the long-form name for SMA. Surface-mount assembly is the process of creating something utilizing surface-mount technology. It is how a device is made using SMT.


This set refers to the surface-mount components, a blanket term for the items you will find inside surface-mount technology. These are the items that allow the device to operate, much like SMD. 


When you have surface-mount packages, also known as SMP, you have a case or device that keeps all the components. This package is similar on a larger scale to a computer tower case or the outer shell of a cell phone.


Surface-mount equipment is what SME stands for and defines the how to lose 15 pounds mechanical products used to assemble surface-mount technology. These are the intricate pieces of machinery that help attach all necessary elements. 

SMT Devices

As referenced in the abbreviations section, SMD (surface-mount devices) are the electromechanical, passive, and active components. But what do all of these categories consist of? This brief list will give you more insight.


When you see the category of electromechanical, it pertains to the connectors and relays. These components allow for the energy to move correctly within the device.


There are three main parts when it comes to passive SMD. Those are resistors, capacitors, and inductors. Passive SMD typically comes pre-packaged, which makes them easier to install. 


When looking for the active components in surface-mount technology, you will typically find integrated circuits. Integrated circuits are groups of chips residing on a single chip. 

SMT Applications

When applying surface-mount components onto a board, you have to use great care. Soldering such small items is an arduous and delicate task, so specialized equipment is necessary if you’d like to do so. Application is possible in different ways, as was done in the past. However, manufacturing them in this way is done due to the significant cost savings associated with the process. 

SMT Advantages

SMT comes with an arsenal of advantages and is beneficial in many areas of life. Not only is it much quicker to manufacture and highly cost-effective to set up and run, but it also leaves less room for error. Surface-mount technology is machine automated, eliminating sleight of hand mistakes. 

Additionally, the smaller size that surface-mount technology produces makes the overall product much more compact. Smaller internal components allow for the external packing and size to be more minimal.   

As an environmental health benefit and advantage and a quality perk, surface-mount technology uses lower resistance and inductance at the connection point. As a result, there are fewer unwanted radio frequency effects. This reduction makes for a better and more predictable high-frequency performance. Using SMT emits lower radiated emissions due to the smaller radiation loop area and lesser lead inductance.

SMT Disadvantages

Although surface-mount technology has many advantages, it isn’t always the best option for every circumstance. 

In the case of error or breakage, surface-mount technology component repair is more complicated and requires a high skill level and expensive tools. This level of detail is due to the small sizes and the lead spacings of several SMD types. If you need to handle small SMT components, it will require tweezers. This method is unlike the one for through-hole components, which consistently stay in place. 

Additionally, you can’t typically install surface-mount technology components in sockets. This method is often utilized for easy installation or component repair upon an instance of failure. When using through-hole components, this is usually an option to use. 

PCB Assembly Using SMT

Printed Circuit Board (PCB) creation previously included tedious and arduous tasks. Oftentimes, many errors would happen during PCB manufacturing, and it would require the manual assistance of a factory worker or operator to fix.

Manufacturers overwhelmingly welcomed surface-mount technology to PCB production.PCB assembly using SMT significantly reduced the margin of error in the process. Not only did this allow for less human intervention, but it began increasing production. Additionally, labor costs began to decline due to the efficiency of the work.

What Is the Difference Between SMT and SMD?

Although the surface-mount devices (SMD) are the functional components that allow the end product to operate, the surface-mount technology utilizes automation to apply the SMD to its designated board. Like a car factory, where mechanical processes construct pieces of a larger product, surface-mount technology builds parts on a much smaller scale. 

The use of surface-mount technology allows for the SMD to remain small in size. The technology can allow this due to the intricate mechanics that comprise the robotic automation device.


Every day new technology is introduced to the world. Each fulfills a specific purpose and tries to make existing processes simpler. 

Surface-mount technology is no exception. With the inclusion of this new technique, in-demand items are coming off the line at a much quicker speed. Additionally, the costs previously associated with the production of such products are consistently declining. With lessening labor costs due to faster and more efficient technology, producing the same item is vastly different across the board.

Surface-mount technology is a welcome process that has incorporated incredible benefits to many different areas of life. This new technology has afforded the world to propel forward in ways that were previously impossible.

Author Profile

Sunny Patel
Sunny Patel is the Engineering and Sales Manager at Candor Industries. Sunny is trained as a IPC-A-600 trainer, AS9100 Lead auditor, IPC CID and got his Engineering degree at the University of Toronto.

Stay Updated on the Latest Innovations