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How to distinguish the good and bad of PCB circuit board and how to choose?
2021-09-10
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Author:Frank



Faced with the various PCB circuit boards on the market, there are two ways to distinguish the quality of PCB circuit boards; the first method is to judge from the appearance, and the other is to judge from the quality specification requirements of the PCB board itself.
   Faced with the various PCB circuit boards on the market, there are two ways to distinguish the quality of the PCB circuit boards; the first method is to judge from the appearance, and the other is to judge from the quality specification requirements of the PCB board itself.

pcb board

  How to distinguish between good and bad PCB circuit board?

  First: distinguish the quality of the circuit board from the appearance

  Under normal circumstances, the appearance of the PCB circuit board can be analyzed and judged through three aspects;

   1. Standard rules for size and thickness

  The thickness of the circuit board is different from that of the standard circuit board. Customers can measure and check the thickness and specifications of their own products.

   2. Light and color

   The external circuit boards are covered with ink, and the circuit board can play a role in insulation. If the color of the board is not bright and the ink is less, the insulation board itself is not good.

  3. Appearance of weld

   The circuit board has many parts. If the soldering is not good, the parts are easy to fall off the circuit board, which will seriously affect the soldering quality of the circuit board. The appearance is good. It is very important to identify carefully and have a strong interface.

  Second: High-quality PCB circuit boards need to meet the following requirements

   1. The phone is required to be easy to use after the components are installed, that is, the electrical connection must meet the requirements;

  2. The line width, line thickness, and line distance of the line meet the requirements to prevent the line from heating, breaking, and short-circuiting;

  3, the copper skin is not easy to fall off under high temperature;

  4, the copper surface is not easy to oxidize, which affects the installation speed, and it will be broken soon after oxidation;

   5. No additional electromagnetic radiation;

   6. The shape is not deformed, so as to avoid deformation of the shell and dislocation of the screw holes after installation. Now they are all mechanized installations, the hole position of the circuit board and the deformation error of the circuit and the design should be within the allowable range;

  7, and high temperature, high humidity and special environment resistance should also be considered;

   8. The mechanical properties of the surface must meet the installation requirements;

  How to choose good quality PCB circuit board products?

   One is to distinguish from the appearance of the product. It is mainly observed from the thickness of the product, the size of the product and the color of the circuit board on the outside of the product. If the color is bright and covered with ink, it means that the quality of the PCB proofing product is good. In addition, pay attention to the details, such as whether the quality of the product's welding process is perfect, because it will directly affect the use of PCB products.

  Second, it should be distinguished from the test results of the product. When selecting PCB proofing products, the manufacturer should conduct product quality inspections, such as checking whether the circuit has heat generation, open circuit, short circuit, etc., and observe whether the product can operate stably under high temperature and other environments. If there is no obvious fault in the test result, it means that the quality is better.

   All in all, when choosing PCB proofing products, you must choose ones with guaranteed quality (such as Jiefang, imported raw materials, and strict production control) to ensure the quality of electronic products. As a PCB circuit board manufacturer, Jiehao is committed to providing users with one-stop PCB proofing and circuit board proofing services to meet the diverse needs of users at multiple levels.