PCB Tech - Basic requirements of PCB electronic component list

In addition to maximizing the opportunity for manufacturers to deliver printed circuit boards on time, careful planning and a comprehensive bill of materials are very important for the proper operation of the circuit. As a manufacturer, if you happen to forget a detail, you may end up releasing substandard printed circuit boards, which will damage your company's reputation. Therefore, the PCB components you will eventually use on the circuit board deserve careful consideration. At this point, we have clearly defined the basic requirements for an excellent electronic component list.

Manufacturer Part Number (MPN)

The Manufacturer Part Number (MPN) is a unified component code and is recognized by the entire component procurement channel (such as Mouser, Digikey, Element14, etc.). It can be identified as a series of numeric and letter codes provided by the manufacturer to identify specific PCB components on the production line.

From these channels, you can get the correct MPN effortlessly. Even if you choose to use basic components such as the 555 timer, you need to make sure to include the manufacturer's part number. Once the manufacturer's part numbers are in place, you will conveniently use the correct components when assembling the printed circuit board.

MPN at the far end of the PCB components on this board

Reference mark

Although it is important to have a manufacturer part number, it is also important to have a reference mark. Generally, the reference indicator may be represented by one or two letters, followed by a number. For example, you will see CR3 on the circuit board; this is a reference mark.

The indicator effectively specifies the PCB components used on the board. Once they are in place, they are convenient because they can ensure better placement of the same parts during assembly. You will not easily confuse the elements when assembling.

Description field

Like the manufacturer's part number and reference mark, the description field is also essential for the development of printed circuit boards. This section generally outlines any components you need. It also describes very important information that should not be used by assembly line members and end users.

As a manufacturer of printed circuit boards, the description field allows you to place whatever you want on the circuit board. This way, you will quickly determine the exact role of each section and enter comments about any special considerations. It can also repair your PCB very smoothly because all the proper precautions are in place.

quantity

Finally, there is a quantity field when assembling the printed circuit board. The quantity field is an important part to help ensure that the number of PCB components is accurate before the assembly process begins. The quantity keeps everything under inspection, especially for automated assembly where everything needs to be reviewed in advance.

Consequences of bad component list

If your PCB component list is substandard, you will encounter costly errors in the manufacturing process-except for mismatched parts and delayed operations, which will have a negative impact on your business entity.

Sometimes, even the lack of a component can force you to redo the entire work, which can cause delays in delivery. This will eventually cost you. The PCB that manufactures and assembles components in the correct way is critical to the actual function of the device using it. A well-thought-out list of electronic components will help you avoid many issues that may delay PCB development or increase its cost. The following is the consequence of the list of inferior components.

Errors in prototyping

Prototyping errors are a recent challenge faced by most printed circuit board designers. For designers, we all agree that nothing is more appropriate than a perfect prototype. However, in most cases, the manufacturer will tell you that your product is not ready or make some adjustments to the prototype.

Although there may be many reasons behind these excuses. Major errors in PCB prototyping are mainly caused by poorly considered PCB component lists.

Act as a PCB prototype manufacturer by using unqualified parts or assuming necessary components. It is easy to understand why you will produce prototypes that cannot meet the needs of the industry. Here, you are likely to face manufacturing errors, which are not only costly, but also time-consuming for you.

To make matters worse, if you encounter errors in prototyping due to a rushed component list. Then, you may even lose some loyal customers to competitors. Unfortunately, many manufacturers seem to be struggling with a list of invalid PCB components and encounter many errors during the prototype manufacturing process.

A designer who designs PCB prototypes

Mismatched parts

There is nothing more frustrating than bringing a printed circuit board containing incompatible parts to the market. In the long run, these boards may not function as expected or completely crash.

Likewise, if the list of electronic components you rely on is substandard, then you will manufacture circuit boards with mismatched parts. You will see one aspect where you experience delays and additional costs.

An eye-opener of a substandard or incomplete list is that important parts may not be installed on your printed circuit board, or these parts may end up in the wrong location. In most cases, mismatched parts may need to be completely reworked, which is an expensive and time-consuming problem.

Possible results of mismatch between PCB components and parts in the BOM

Higher than expected cost

Manufacturing PCBs, especially those containing multiple single layers, is relatively expensive. Usually, the goal of PCB manufacturers is to minimize manufacturing costs while realizing some profits for them.

However, for most PCB designers, this is not the case. Many of them encountered higher-than-expected manufacturing and shipping costs due to a weak list of PCB components. Using the shallow component list, you may need to rework the entire board to fix any errors on it, which will see the correct PCB service provider. Fortunately, there are various PCB manufacturing companies that incur additional and unnecessary costs.

With a complete component list, all the parts needed to manufacture the printed circuit board will be listed. In addition, you can determine their prices and where to purchase them as early as possible. In this way, unnecessary costs can be avoided.

Flexible PCB placed on top of banknote

PCB development delay

PCB manufacturers that take a long time to manufacture customer products may lose them, and manufacturers need a shorter time to deliver such products. The customer received the PCB later than expected, which made them feel frustrated. Unfortunately, this is the case for most companies engaged in the manufacture of printed circuit boards.

Due to the weak component list, the development delay of printed circuit boards is a challenge. With a list of inferior components, it is difficult to manufacture printed circuit boards at the agreed time. The reason for the incomplete documentation is that it takes a lot of time to make the printed circuit board, because you have to go back and forth between different suppliers to find the necessary parts to complete the circuit board.

PCB delay may be caused by a weak component list

Delayed operation

PCB production is exceptionally large-scale manufacturing. It is a technical and professional job that requires a good list of components on the parts that make up the circuit board. Delays in PCB manufacturing are usually caused by an incomplete component list that does not include all the necessary parts that make up the printed circuit board.

If the list is incomplete, you risk losing customers to manufacturers who make printed circuit boards on time. If the component list is incomplete, you cannot start and run production on time. One aspect of delaying your printed circuit board production.