SMT Assembly – All That You Should Know - Miracle Electronics

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SMT Assembly All That You Should Know -
Miracle Electronics 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.
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• 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.

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• 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,

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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
(https//www.miracle.net.in/blog/kind-pcb-assembly
- manufacturer-require/). 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. For more Information https//www.miracle
.net.in/