Page 1

SMT Assembly – All That You Should Know SMT or surface mount technology has become one of the most popular methods used today to design and fabricate a PCB assembly from India, as it is known to deliver consistent and reliable results. Earlier, the through hole technology was used, wherein the component leads were placed into the drilled holes on a bare PCB, and soldered to pads on the opposite side either by manual assembly or by the use of automated insertion mount machines. But slowly and gradually surface mount technology started gaining popularity as it started eliminating the requirements of the leads going through the PCB, and instead, elements were soldered onto the board, which proved to be an improved solution. Today, maximum PCBs are manufactured using this surface mount technology. Here is all that you should know about these SMT assemblies.

Procedure of SMT assembly manufacturing ✓ Design and component finalization – The PCB design is first finalized and the components selected. Then, the data is sent to a PCB manufacturing companies, and the components are bought in a way to facilitate automation. The various machines required are then set up.


✓ Solder paste printing – A machine is used to apply solder paste using a stencil and squeegees to the appropriate pads on the PCB. Some machines have the option of including automatic inspection, while others require a separate machine setup. ✓ Component placement – Every component to be installed is picked from its packaging using either a vacuum or a gripper nozzle, checked by the vision system and placed in the programmed location at high speed. ✓ Pre-Reflow Automated Optical Inspection (AOI) – It is important to check after component placement that there are no errors, and all the parts have been placed correctly before reflow soldering. An AOI machine can be used for this to make checks such as component presence, type, and polarity. ✓ Reflow soldering – Next, the PCB assembly moves into the reflow soldering machine, where all electrical solder connections are formed between the components and PCB by heating the assembly to a sufficient temperature to make the connections durable. ✓ Post-Reflow Automated Optical Inspection (AOI) – Lastly, checks are made again to finally ensure that no mistakes have been made. 3D technology is now used to make these checks to ensure all-angle perfection, by allowing more accurate measurements, and providing a more stable inspection process. Benefits of SMT assemblies ✓ Majority of the process involved with SMT technologies is virtually automated, and requires minimal manual involvement. The automation minimizes the errors that occur otherwise with manual involvement, thus improving reliability and consistency. ✓ Labour costs are considerably reduced when manufacturing SMT assemblies because of the reduced manual work involved. Although the right machineries and tools are required, it is only a one-time investment. ✓ Because the components are soldered directly on the board, lots of space is saved; thus reducing the size and weight of the PCB. Along with reduced size, the SMT technology also enables putting more elements in a restricted area. The future of SMT


SMT has already become one of the most widely used technologies today, but does it stand the same for the future too? This is also important to know. As predicted by experts, SMT is a trend that is expected to continue in the following years too. In fact, manufacturers are also working their way out to offer SMT assemblies at more affordable prices to benefit the users. Thus, in the future, users can expect to receive top-class SMT boards at budget-friendly prices! Choosing the best PCB manufacturer You can achieve the best PCB product only if you have a trustworthy manufacturer by your side. So, your aim should be to find the best PCB manufacturer for your product. One such PCB manufacturer is Miracle Electronics, having years of experience and expertise in fabricating printed circuit boards. Here, you can get experienced engineers working with modern equipment, using top-quality materials, to offer customers with on-time deliveries of the best quality PCB assembly from India at affordable rates.

Profile for Miracle Electronics Pvt Ltd

SMT Assembly – All That You Should Know - Miracle Electronics  

To design an efficient PCB assembly from India, you need a professional PCB manufacturer for the job, who has expertise in using the most po...

SMT Assembly – All That You Should Know - Miracle Electronics  

To design an efficient PCB assembly from India, you need a professional PCB manufacturer for the job, who has expertise in using the most po...

Advertisement