Different welding resistance film due to the composition, content is different, and coating bonding force is not consistent, so the adhesion degree of coating and printed board welding resistance film and coating molecular polarity is closely related to t
Brief description of SMT patch processing and manufacturing preparation: 1. Engineering, II. Production SMT patch processing: III. Quality, four. Current process: five. New process (optimization)
We should start from the design of PCBA lead-free products to consider the compatibility between lead-free materials, lead-free and design, lead-free and process compatibility; Give full consideration to heat dissipation; Carefully select PCB board, pad s
ISO9001 certification, CCC certification is the basic certification of PCBA manufacturers, can obtain ISO13485, IATF16949, UL certification of PCBA manufacturers are more comprehensive strength of the enterprise.
With sufficient theoretical basis, more practice, more learning, more summary, in order to be qualified for the PCBA circuit board maintenance post.
PCB performance test is a necessary test to ensure the stability of product performance after processing. It is divided into different tests according to the actual environment and purpose of product use.
Under proper working conditions, most electronic devices can have a life expectancy of decades or more, but some still fail prematurely. The reason is often the stress of not being noticed.
The demand for multifunctional, miniaturized, high-density, high-performance and high-quality electronic products is increasing. High welding quality has become the life insurance of electronic products.
Circuit is easy to be damaged in overvoltage, overcurrent, surge, etc. With the development of technology, PCB products are increasingly diversified and complicated, and circuit protection becomes particularly important.
Circuit boards must use the thinnest coating material to provide maximum protection in order to minimize heat retention, additional weight gain and various other problems.
SMT patch proofing and mounting on the space the size of the pinky finger means higher reliability and mounting accuracy, and two great progress can be summarized: first, the number of chip welding pins is reduced, and second, the welding volume is smalle
Three anti-paint, also known as PCBA electronic circuit board protective oil, the use of three anti-paint PCBA circuit board with waterproof, moisture, dust "three", cold and heat shock resistance, aging resistance, radiation resistance, salt sp...
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