A large percentage of today’s mass-produced electronics hardware is manufactured using Surface Mount Technology or SMT as it is popularly known as. Not without reason! SMT PCBS go a long way in speeding up PCB Production time besides offering a host of other advantages.
Essentially Surface mount technology (SMT) took the basic concept of through-hole manufacturing and went on to offer a major improvement. With the use of Surface Mount Technology, PCBs do not need to have holes drilled through them. Instead what they do is to make use of solder paste. This phenomenally simplified the process besides adding a lot of speed. While it is true that SMT mount components may not have the strength that a through-hole mount may have but they offer a whole lot of other advantages that offset this issue.
Surface Mount Technology goes through a 5-step process as below:
1. Production of PCB- this is a stage where the PCB is actually produced with solder points
2. Solder is deposited onto the pads that allows components to be fixed to the board
3. With the help of machines components are placed at the precise solder points
4. The PCBs are baked in order that the solder is hardened
5. The finished assemblies are inspected
Importantly, SMT allows for a far lower production time as no holes are required to be drilled. Also, SMT components can be placed at rates of thousands of placements per hour, as against less than a thousand for through hole mounting. This in turn leads to the product being manufactured as quickly as it is envisaged which further leads to reduced time to market. If you are therefore looking at speeding up PCB Production time, SMT is clearly the answer. With the use of Design for Manufacturing (DFM) software tools, the need for rework and redesign of complex circuits is significantly reduced, further adding to the speed as well as the possibility of complex designs. Check out the guide on why is process control measurement essential to stop defects in SMT PCB Assembly.
All this is not to imply that SMT does not come with its own inherent disadvantages. SMT can be unreliable when it is used as the only attachment method for components that face a whole lot of mechanical stress. Components that generate a lot of heat or bear a high electrical load cannot be mounted using SMT. This is because the solder can melt under high heat. Through-hole Mounting, therefore is likely to be continued to use in cases where there are special mechanical, electrical and thermal considerations that make SMT ineffective. Also SMT isn’t suitable for prototyping as there could be need to add or replace components at the prototyping stage, which a high component density board may find hard to support.
Use of Surface Mounted Technology
With the formidable advantages offered by SMT, little surprise then that they have taken over as the main design and fabrication standard today. Essentially they are used in any situation that calls for production of highly reliable and high volume PCBs.
At Technotronix, we are fully equipped to handle your SMT Manufacturing requirements. With over 4 decades of experience in PCB manufacturing as well as assembling PCBs with differing levels of complexities, we follow industry best practices to ensure we deliver cutting-edge products. Our team of experts and state-of-the-art equipment ensures that all our PCBs meet the industry standards of quality and testing. It is our vast portfolio of satisfied clients that stand as the biggest testimony to our success. In case if you have any questions, please feel free to contact us via email at sales@technotronix.us
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