PCB-Assembly

  1. High efficiency High-frequency PCB boards with small dielectric constants will have very low losses, and advanced induction heating technology can achieve the target heating requirements with very high efficiency. Of course, while focusing on efficiency, it also has the characteristics of environmental protection, which is very suitable for the development direction of today’s society. 2. Fast transmission speed The transmission speed is inversely proportional to the square root of the dielectric constant, which means that the smaller the dielectric constant, the faster the transmission speed. This is the advantage of the high-frequency printed circuit board. It uses special materials, which not only guarantees the low dielectric constant, but also maintains the stable operation, which is very important for signal transmission. 3. Large degree of controllability High frequency PCB board is widely used in various industries that require precision metal material heating treatmen...

  The last 25 years or so have been a sea change in the electronic industry. The speed of technology is changing at a geometric rate. Where earlier mobile phones were the size of shoes, now there are slim smart phones that easily slip into a shirt pocket. The changes expected in the next two decades will make the previous decades pale in comparison. One of the key ingredients in this heady mixture is the flexible printed circuit board, also known as the Flex PCB. Market Trends in Flex PCB According to the Global Industry Analysts Inc., the projection for Flex PCBs in the global market is pointing towards US$15.2 billion by 2020. Several factors are contributing to this trend. Chief among these are the emergence of wearable electronics, polymer plastic solar cells and foldable and rollable smartphones. This has led to an unrelenting focus on the manufacture, performance, and design of special printed circuit boards, mainly of the flexible type. Technological Trends in Flex PCB Desig...

  1.PCB size and appearance inspection PCB size inspection  mainly includes the diameter of the processing hole, the spacing and its tolerance, and the small edge of the PCB; While PCB appearance inspection is about the solder mask and the pad alignment, for instance, whether the solder mask has impurities, peeling and wrinkling, the benchmark mark is qualified, the circuit conductor width (line width) and spacing meet the requirements or not.   2. PCB warpage and distortion detection The basic test principle: the PCB under test is exposed to the thermal environment and carry out the thermal stress test. In addition, a typical thermal stress test method that is a spin dip test and a solder float test. In this test method, a PCB is immersed in molten solder for a certain period of time, and then removed for warpage and distortion detection.   3.S olderability test of PCB The solderability test of PCB focuses on the test of pads and plated thro...

  NPTH PTFE board processing flow Cutting-drilling-dry film-inspection-etching-erosion inspection-solder mask-characters printing-spray tin-forming-testing-final inspection-packaging-shipment PTH PTFE board processing flow Cutting-drilling-hole treatment (plasma treatment or sodium naphthalene activation treatment)-copper immersion-board electricity-dry film-inspection-diagram electricity-etching-corrosion inspection-solder mask-character printing-spray tin-forming-test-final Inspection-packaging-shipment General specification for high frequency pcb (Rogers PCB, Teflon PCB, RF PCB) Layer count:  1-6 Board thickness:  0.2-5.0mm Copper thickness:  0.5-3 oz Dielectric Constant(DK):  2.2-10.3 Min trace width/spacing:  4/4mil Min drill hole size:  0.15mm Surface treatment:  HASL, HASL Lead free, Immersion Gold/Tin/Silver, OSP, etc. Material available:  Teflon pcb material, Rogers pcb material, Taconic pcb material, Arlon pcb material, etc. Advanta...