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The old saying “bigger is better” just isn’t accurate in the world of electronics. This is especially true when it comes to surface-mount technology (SMT.) SMT places components directly onto the surface of a printed circuit board in order to create a circuit. It has become a preferred method of creating circuits in the electronics industry. Both surface mount technology and through-hole can be used on the same PCB. However, in many cases, SMT versions of through-hole PCB designs can be produced. Surface mount technology can make a big impact on design and development. Here are some of the advantages of using SMT in your electronic manufacturing project:
If you are dealing with a small PCB board, placing your components with surface-mount technology can keep the board small. SMT components are smaller than those used in through-hole because it has either smaller leads or no leads at all. Because of this it takes up less than half of the space a through-hole mount would take. It will also lead to a decrease in weight of the PCB. An SMT component often weighs just one-tenth of its through-hole equivalent.
That small size leads to an important advantage when using SMT in manufacturing. Once set, surface-mount technology typically requires lower production costs than through-hole placement. The size of the board is reduced, the number of drilled holes is reduced, and routing of traces is reduced. That leads to reduced material handling costs and a faster manufacturing process which, in turn, brings down the cost of the whole project.
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You are able to pack more on your PCB using SMT. Because there are no holes, you can add more components per unit of area. You can also add more connections per component. And, because holes do not block routing space on inner or back-side layers, components can be placed on both sides of the circuit board. That can sometimes reduce the need for multi-layer boards.
Surface-mount technology is a much more streamlined manufacturing process compared to through-hole. Time is saved because components are applied using a solder paste instead of drilling holes in the PCB. The work that takes hours placing components of a through-hold board can take just five minutes with SMT.
Having in-house engineering for your testing and prototyping of SMT can help during the design phase. They are able to test on the spot and/or make corrections, test new power sources, etc. You will avoid communication breakdowns that often occur when you are working with a new product team.
If you are considering surface-mount technology services for your next PCB project, turn to Levison Enterprises. Our expert team will help you determine if SMT is the appropriate method. We specialize in electronic product development and manufacturing. Let Levison work for you. Contact us today for questions on surface-mount technology.
SMT is a powerful and versatile technique for PCB design that offers many advantages, such as size, weight, performance, and cost. To ensure a successful PCB design, you must adhere to certain best practices and guidelines. Start by selecting components that meet your design requirements and specifications. Then use a suitable PCB layout software with features like component libraries, design rules, auto-routing, and simulation. Additionally, follow the recommended footprint, pad, and trace dimensions for each component according to the manufacturer's datasheet. Apply the appropriate amount and type of solder paste to each pad and be mindful of excess or insufficient solder that can cause solder bridges or cold joints. Furthermore, optimize the placement and orientation of components to minimize the board area, avoid interference, and facilitate assembly and testing. Finally, use proper reflow profiles and temperatures to ensure a uniform soldering of the components while avoiding thermal damage or defects. Testing and inspection with methods such as visual inspection, continuity testing, in-circuit testing, and functional testing will help you verify functionality, quality, and reliability. With these tips in mind you will be able to overcome the challenges of SMT and achieve a successful PCB design.
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