Blog
  • What is the PCBA stress test principle?

    First, the strain gauges are attached to several different positions on the PCB. When the process or work station is operated, the strain gauges are connected to the measurement instrument system to make the stress quantitatively display the records. Namely: Strain - Resistance Change - Voltage (or Current) Change - Magnification - Recording - Data Processing...

    2018/06/09 zhengxiaowei 160

  • The reason and solution of the poor wettability of PCBA soldering

    The reason and solution of the poor wettability of PCBA soldering...

    2018/05/29 zhengxiaowei 161

  • What is the PCBA inspection standard for finished products?

    What is the PCBA inspection standard for finished products...

    2018/05/24 zhengxiaowei 176

  • What are the PCBA workshop management requirements and precautions?

    PCBA production equipment and PCBA processing technology have certain requirements for the workshop's power supply, ventilation capacity, temperature, humidity, air cleanliness, anti-static, and production personnel wear accessories....

    2018/05/14 zhengxiaowei 201

  • Common PCBA Poor Welding Conditions

    There will be poor welding in PCBA prouction process, due to the influence of various uncontrollable factors such as plate, solder paste, flux, worker, environment and etc. What are the general conditions of poor welding?...

    2018/04/28 zhengxiaowei 149

  • What is the purpose of PCBA slice analysis?

    Generally the purpose of the PCBA slice analysis is to improve the PCB defects of surface and inside, anatomize the structure of the electronic components, and let the engineers know where to improve the optimization and further improve the product. At the same time, it is also used for SEM/EDS scanning electron microscopy, energy spectrum observation of morphology and analysis components. The suspected abnormal cracking and foreign body embedding found in SAM's samples can be observed and verified by slice method after complete inspection of such as X-ray....

    2018/04/16 zhengxiaowei 208

  • Why do PCBA proofing first?

    Before large quantities are produced, demanders generally choose a factory or several factories for PCBA proofing. But what is the purpose of this?The first is to check whether there is a problem with the PCBA design process or whether there is a need for modification. The second is to choose a strong factory that can ensure PCBA production yields and test pass rates. In this way, demanders will make an appropriate assessment of the delivery and quality of the product, and then start mass production....

    2018/04/09 zhengxiaowei 185

  • PCBA repair process and purpose

    During the manufacturing process of PCBA, The short circuit PCBA boards caused by various reasons, so the worker need to do the repairing for PCBA boards. Repairing steps as below: Whole board inspection – Power on detection – Checking out problem points – Self-test after repairing – Second test – Second full board inspection...

    2018/03/31 zhengxiaowei 195