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How To Choose The Right PCB Components

How To Choose The Right PCB Components

Abstract

For a PCB Designer to come up with the best PCB design, s/he must carefully choose the right PCB Components for the board to be manufactured. If the PCB Components are not chosen wisely, problems might be encountered later that could greatly increase the cost of the whole project. For example, some PCB components are rare and very expensive.

 

Content

1.PCB design schematic and components

2.Mounting of PCB Components

3.Spacing requirements

4.Final soldering of the PCB Component

 

1.PCB design schematic and components

When the schematic design with virtual components is completed, you need to produce a Bill of Material for all the components and make sure that their XYZ dimensions fit the physical layout and that they are readily available on the market at an affordable price.

 

2.Mounting of PCB Components

Surface mounting is the cheapest option and the use of small components allows the PCBA to be machine manufactured. However, depending on the application, this is however rarely achieved. If the PCB is meant for some hobby project, PCBA will be done mostly by hand and the use of large components makes handling easier. If the PCBA involves a lot of connectors, the board will have lots of numerous through-hole PCB components and the soldering will be done by hand.

 

 

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3.Spacing requirements

Power components emit heat that needs to be rapidly dissipated. This requires a higher clearance between the board and the component itself. In some extreme cases, a heat sink on the PCB Component surface to assist in heat dissipation. Hence the final shape of the PCB board might be affected and needs to be considered in the initial design.

 

4.Final soldering of the PCB Component

To decide on the soldering operation, one has to review all components specifications, properties and physical limits from their datasheets. This will dictate whether soldering will be done by hand, by wave technique or by placing the PCBA into the reflow oven. For hand soldering, it is best to start the process with bulky-through hole components, moving to lighter components and small areas.

 

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