China HONGKONG KINGTECH PCB SOLUTION LIMITED company news

The pebs that kingtech is talking about today is not the pebs that we produce, but an element below. What are PCBs? Polychlorinated Biphenyls (PCBs) are blends of as many as 209 distinct chemical compounds that are chlorinated (known by the name congeners). There aren't any known natural sources for PCBs. PCBs can be described as liquids that are oily or solids that are light yellow to colorless. PCBs may exist in the air as a liquid. PCBs are not known to have any taste or smell. A variety of commercial PCB blends are marketed to the U.S. by the trade name Aroclor.   PCBs are utilized as coolants and fluids in capacitors, transformers and other electrical equipment due to the fact that they aren't easily burned and they are excellent insulation. PCBs were made but banned in the U.S. in 1977 because of the evidence that suggests they accumulate in the environment and could create harmful health consequences. Products that were manufactured prior to 1977 that could contain PCBs include older fluorescent lighting fixtures as well as electrical appliances that have PCB capacitors as well as old microscope and hydraulic oil. How do PCBs behave after they are exposed to the elements? • PCBs travelled through the air as well as water and soil in the course of their creation or use and then removal. They may result from leaks or spills that happen in their transportation, as well as from fires or leaks in products that contain PCBs. • PCBs are still released into the environment by hazardous waste sites and illegal or uninformed treatment of waste from industrial processes as well as consumers' products. They can also leak from older electrical transformers that contain PCBs and even burning some substances in burning incinerators. • PCBs won't degrade easily in the atmosphere and can remain in place for lengthy period of time. PCBs are able to travel for long distances in the air, and they can be placed in locations far from the point where they were released. When in water, only a tiny quantity of PCBs might remain in solution, however, the majority of them remain in organic matter as well as bottom sediments. PCBs are also extremely bonded to soil. • PCBs are absorbed by fish and small organisms in the water. They are also absorbed by other animals that consume these animals as food. PCBs are found inside the fish as well as marine mammal, accumulating to levels that could be times greater than those found in the water. How can I be subjected to the PCBs? • Utilizing old fluorescent lighting fixtures as well as electrical appliances and devices like refrigerators and television sets, which were manufactured over 30 years ago. These products could release small quantities of PCBs in the atmosphere when they become hot in operation and may be a cause of skin irritation. • Consuming foods that are contaminated. The most significant food source for PCBs is fish. particularly fishing caught by sport fishermen from contaminated rivers, lakes, as well as parts from Puget Sound. To minimize the risk of exposure to contaminants found in fish, adhere to our advice on eating fish. PCBs can also be found in dairy and meat products. • Exposure to air pollution near dangerous waste sites and drinking wells that have been contaminated water. • At work, during repairs or maintenance PCB transformers. • Accidents, fires or spills caused by fluorescent lights, transformers and other electrical devices from the past. • Removal of PCB materials. What are the effects of PCBs influence my health? The most frequently observed health adverse effects of people who are exposed to large quantities of PCBs are skin problems like acne and rashes. Studies on exposed workers have observed changes in urine and blood that could be indicative of liver damage. PCB exposures to the general population aren't likely to cause any liver or skin effects. The majority of the studies that examined health impacts on the health effects of PCBs for the entire population looked at children of mothers who had been exposure to PCBs.   Animals who ate foods that contained massive quantities of PCBs for only a short time period experienced minor liver damage, and some even died. Animals who consumed smaller amounts of PCBs in their diets over a period of months or weeks experienced various types of health adverse effects, including acne-like skin conditions, anemia and stomach, liver and thyroid gland damage. Other side effects that result from PCBs in animals are changes to the body's immune system as well as behavioral changes and diminished reproduction. PCBs do not appear to cause birth defects. PCBs and Cancer A few studies by researchers indicate that PCBs were linked to certain types of cancer in humans, including cancer of the biliary tract and liver. Rats who ate foods that contained significant amounts of PCBs for two years, developed liver cancer. It is believed that the Department of Health and Human Services has concluded that PCBs can reasonably be expected to cause cancer. The EPA as well as the International Agency for Research on Cancer have found that PCBs may be carcinogenic for human beings. What is the impact of PCBs impact children? Females who had been exposed to large amounts of PCBs in their work environments or ate large quantities of fish that were contaminated by PCBs were born with babies who weighed just a bit less than those born to women who didn't have the same exposures. Children born to mothers who consumed PCB-contaminated fish had abnormal responses to test of the infant's behavior. Some of these issues like issues with motor skills, and the loss of short-term memory, were observed for many years. Studies have also suggested an immune system is affected in babies who were born to or nursed by mothers exposed to high amounts of PCBs. There is no evidence of birth defects causing structural defects due to exposure to PCBs nor of health consequences of PCBs in older children. The most likely route that infants are affected by PCBs is through breast milk. Transplacental transfer of PCBs was also mentioned. In the majority of cases breastfeeding, the benefits outweigh any risk of being exposed to PCBs in milk of mothers.   What can families do to reduce the risk of being exposed to PCBs? • Children and you could get exposed to PCBs through eating fish in contaminated areas. To enjoy benefits from the health benefits of eating fish and minimize your exposure to contaminants, make sure you follow our recommendations for eating fish. • Children are advised not to play with old electrical appliances, devices, and transformers because they could contain PCBs. • Children should not be playing in the dirt around hazardous waste sites as well as those areas that have an explosion in a transformer. Also, children should be prevented from eating dirt or placing dirty hands, toys or other objects into their mouths. They should clean their hands often. • If you're exposed PCBs at work you can take them home on your body, clothes or other tools. Shower and change your clothes before leaving for work and workplace clothes should be kept apart from other clothes , and cleaned in a separate manner. Do you have a test for medical purposes to confirm if my body has been exposed PCBs? Tests are available to determine the levels of PCBs in your body fat, blood and breast milk, but they aren't routinely administered. A majority of people are found to have low levels of PCBs within their bodies due to the fact that nearly everyone has been exposure to PCBs. Tests can reveal whether you have PCB levels are high that could indicate previous exposure to higher levels of PCBs However, it is not able to determine how long or when you were exposed to PCBs or whether you'll experience health adverse effects.

PCB Kingtech continue with the basics of pcb design. Before validating the BOM file, be sure that all active parts are in the file. Parts should be validated in accordance with those fields as follows: Serial number. Part description Designers that match the schematic Quantity of the components MPN VPN DNI (do not install) components BOM or bill of material (BOM) A good example of BOMs. BOM Stack-up preparation in PCB design Stack-up is an essential feature in the fundamentals in PCB design. It defines the layout that a multilayer board is constructed in a sequence fashion. Stack-up gives information on the weights of copper and the thickness of the material which are essential for the manufacturing of circuit boards. If boards are properly stacked with precision, crosstalk and electromagnetic emissions are minimized, and quality of the signal is enhanced.   Be aware of your board's mechanical limitations that include the thickness of the board and the height of your components. It is essential to know the control impedance requirements as well as the number of differential pairs as they will affect how many layers are on your board. The density of routing on the circuit board will affect the amount of layers. Select the PCB material according to the speed of its rise time. PCB stack-up The typical PCB multilayer stack-up Check the manufacturing quality of your stack-up with our free Stack Up Planner. The following requirements are essential for the plannerto work: The PCB material (FR4 I-Speed, FR4, Rogers, etc.) is dependent of the frequencies required as well as the surrounding environment. Layers that include power and signal layers. These include power and signal. Imperative requirements for Impedance, like 500 single-ended, 900 differential or 1000 differential Copper thickness (1/2, 1 or 2 pounds) Stackup Planner by Sierra Circuits Take care to inspect the footprint you have created Schematic, BOM complete, and stack-up comprise the core on the circuit board. It is much easier to make footprints for specific components when they are included in standard packages. Most of the time footprints for standard programs are included within the library of the software (Altium Designer, Allegro, etc.). If not, you'll have to build it from the datasheet for the component. Make sure that library components conform to the recommended land pattern as described on the information sheet. After designing your footprint, do a quality check. Mark your component orientation. Footprints should be checked for bottom and top view, as well as pin pitch and the height. Making sure that you have a precise footprint in line with the pattern of the land will prevent problems when assembling. To determine the right part and the land pattern it is crucial to use the correct numbering key from the datasheet. Incorrect reading of the sheet can cause a wrong footprint, which could require complete re-design and fabrication for the board.   The image below shows an illustration of a key that is numbering as well as a range of footprints. The numbering key is located in the footprint. The numbering key is contained in the datasheet Model numbers for Footprint and the associated PINs A chart displaying the model numbers as well as their associated Pins Installation of components Once the design and mechanics of the board are done, the next step is to install components. A proper placement of components on a PCB results in higher performance and better signal quality. It begins by placing the components placed in the exact spots in accordance with the design specifications. They typically consist of connectors as well as their related components. After that, the major components, such as processors, memory and analog circuits are put in the correct positions. The next step is placing additional components like crystals, capacitors for decoupling, along with series resistors. Also, read How to place components in KiCad Be sure the mechanical drawing shows the location of mounting holes as well as other parts that require critical locations and rotation. Make sure to check if the drawing contains any height limitations on the top and bottom sides. The basics of the placement of components on the PCB Properly placed components should be placed on PCB PCB routing The process begins by establishing the design guidelines for the physical space and impedance regulations. The calculation of the width of the trace is to be determined according to the demands of the various circuits. Give appropriate rules to the nets according. Every trace that is controlled should have an uninterrupted reference plane layer.   The procedure of routing involves placing copper traces between nodes. The conductive path is determined by the positioning of traces, vias and arcs which connect the nodes. Following the routing, power/ground connection to the plane is established   High-Speed PCB Design Guide - Cover Image High-Speed PCB Design Guide 8 Chapters - 115 Pages - 150 Minute Read WHAT'S INSIDE: The reasons for signal integrity issues Knowing transmission lines, and controlling impedance The selection process for PCB materials with high-speed speed High-speed layout guidelines DOWNLOAD NOW PCB fabrication diagram A well-designed fabrication design will save time, cut expenses, and ease the burden. The drawing of fabrication contains details about the manufacturing process and the mechanical aspects of the circuit board. It contains information on stack-up as well as fabrication notes, IPC standards, and notes on impedance. The drawings of fab are provided as PDFs to the manufacturers. The fab drawing must contain all the details needed to make a piece of board. It must mainly comprise of: Dimensions of the board The outline of the board Chart of drilling Drawing Stack-up Copper trace and tolerance to etching PCB fabrication diagram A sample of a fabrication drawing Drawing of the board assembly The PCB assembly drawing has all the details necessary to construct the board. This drawing is available in pdf as well as .jpg format and could include component outlines, surfaces pad and through hole pads, as well as the polarity mark title and outline of the board.   In addition, the assembly drawing is composed of several key components such as: Component outline: Be sure you display all the components' shapes as well as their respective reference numbers to be soldered. Also, include components that will be press-fitted or affixed with mounting hardware. Views of additional views on double-sided boards typically require a view of the front as well as the backside. Both views are possible on one sheet if your PCB is small. Otherwise it is necessary to add more sheets. Manufacturing labels: identifying manufacturing labels like barcodes or assembly tags using the help of a pointer, and then linking them in notes. Assembly notes: They are a collection of instructions with assembly information as well as the industry's standards and requirements, as well as particular location for the feature. Final QC and exporting right Gerber files After the layout is completed, the last stage is to perform a set of tests. In this phase, DFM (design for manufacturability) is conducted to determine the fundamental issues that are associated with the layout. These tests will identify the possibility of issues occurring during the manufacturing process. With the Sierra Circuits superior DFM software, users are able to test the manufacturability of your design. The designs (in the format of Gerber) are scrutinized and the details of any design rule violations are displayed. Better DFM by Sierra Circuits The final list of deliverables must include all gerber files including assembly and fabrication diagrams, the drill file ODB++, IPC-356 and X-Y positioning files to be used in assembly. With this information, your fabrication company is able to perform designs for manufacture (DFM) along with design for assembly (DFA) tests using the board. Please let us know in the comments section if your desire to know more about designs for PCBs, production and assembly. PCB kingtech will be more than happy to assist you.

To become a skilled designer, knowing the fundamentals to PCB design is essential. Understanding the correct components selection, schematic check and the final QC is vital to the design to be successful. PCB design in brief The design of a printed circuit board begins by creating an initial block diagram. The block diagram is then converted into the schematic design by using software called CAD. Schematics are the representation of symbols for components as well as internet connections that connect them. Nets are the trace lines that are on the boards. Pre-layout is the next stage during the design process. you will need to ensure that the BOM (bill of materials) from the schematic is checked for components with long lead times as well as obsolete components. Validation involves confirming the manufacturer's parts numbers (MPNs) along with vendor's part number (VPNs). This stage also involves the stack-up design. The next step is then the next step is the PCB design phase. This involves setting the parameters of the board and determining the outline and routing the components and then generating the production documentation using a suitable outline checklist for design.   PCB design basics When creating an entirely new PCB, it's important to stick to basic design principles. If this is not done, it can create a bad design, which will be extremely difficult to make. So, it is important to be aware of the following ideas: Select the appropriate components and sizes of packages As a designer of boards, you must thoroughly research the BOM and study the components which make up the design. If you have enough space on your board, you could choose more powerful components for resistors as well as capacitors. It is best to choose 0603 or 0805 sizes of capacitor/resistor rather than 0402 or 0201. Choose one of the lower size package model of the part if you re experiencing problems with spacing. Also, select the appropriate component and package based upon the voltage, current and frequency. Smaller components are produced by various manufacturers. This allows designers to select alternative components without altering the design or layout in order to provide a prompt solution for parts that aren't readily available. Additionally, it is essential to determine the proper size of the packaging during the PCB design stage. It is advised to select smaller packages only when absolutely necessary or else, select larger ones. The use of too many small components packages could cause problems in the assembly of circuit boards and cause issues in cleaning and working. When you've determined the perfect size for your package then you can select components that fall into the same density category.   Do not use components with long lead times. The inability to supply components could result in significant delays. Therefore, it is recommended to verify availability when checking the spacing of components. If the component you are looking to purchase has a lengthy lead-time, purchase it as soon as you can. It's advantageous to have other components that have identical footprints. The assembly vendors can also acquire the most widely-available components to ensure that each component will be available at the time to build the boards. Schematic checks A schematic is an organized circuit diagram that shows the electrical connections among different electronic components. Schematic design basics often get ignored. Check the following: • Verification of pin numbers and labels in symbologies of components • A polarity test for all the components that are polarized. • Labels that overlap and pins • Assuring that the base, collector and emitter pins conform to the schematic symbols, datasheets and footprint package • Validation of the value of the component and location as well as the reference designations • Descriptions of the symbols in the schematic • Connectors off-page • Examining the reference to the intersheet • Check the decoupling capacitor for the presence of all ICs Ground pin separation based on the type of signal (analog digital, digital ground) • Netlist checks for design accuracy and connections that are not correct Check out our article on netlist and schematic checks to ensure that designs are error-free to comprehend the draft checks, schematic checks check connectivity, ERC checks.   Test points are added to all signals that are important The design for test is needed to test the electrical conductivity of the circuit board. It is important to add test points for all the important signals in order to make it easier for tests on electrical conductivity (E-test) and tests in circuit (ICT). Be aware of the following: 1. Side of the board:If possible, all testing points should be placed in the exact same place on both sides of the boards in order to make testing easier. 2. Minimum distance between test points: The minimum distance between test points is 0.100 inches. This increases test efficiency. 3. Distribution of test points The distribution of test points equally on circuit boards helps in testing using several probes. 4. Area for components that are taller The designation of the area that is designated for taller components will speed up the testing. 5. The tolerances for manufacture: Make sure to take into account manufacturing tolerances when designing the layout that will allow area for test points. Be sure that your BOM is current when designing A BOM is an in-depth listing of all the parts needed to make an item. Make sure that your BOM is kept current while you are making your design, and if you make any modifications in your designs, be sure that you've reflected the changes on the bill of material. For instance, if you alter the part number in your schematic, make sure you update your BOM too. Before you verify the BOM file, be sure that all active components are included. Parts should be verified with regard to some fields, which will be talked about next time.

Hallo, amigo! We just constructed a plant in Jiujiang City, Jiangxi Province, to better serve our consumers. It cost about 2.3 billion yuan and has more modern machinery and ideal production conditions. There are a number of reasons why we constructed it.   One of the reasons for building this new factory in Jiangxi is the local advantage, such as the easy access to transportation and low production costs. On the one hand, Jiangxi boasts a renowned corporate culture in addition to a favorable physical and economic environment. On the other hand, Jiangxi has continued to support a development strategy that is driven by innovation and that deeply integrates science, technology, and culture during the past few years. In order to better meet the new expectations of the people’s spiritual and cultural life, it is advantageous to lead Jiangxi’s reform and development in the new era, accelerate the application of cultural and scientific advancements, and support the development of 5G, artificial intelligence, digitalization, VR/AR, and other new technologies.   Jiangxi stepping up the building of demonstration bases is the second and most crucial factor. Jiangxi will host a large number of national demonstration bases for the fusion of culture and technology by 2025, as well as provincial demonstration bases. Jiangxi also emphasizes the importance of scientific and technological innovation and cultural creativity as “twin engines” and encourages local communities to develop regional patterns for the integration of science, technology, and culture in accordance with their level of economic and social development and available resources.   In order to boost the soft power and added value of “Jiangxi Smart Made,” Jiangxi also emphasizes the industrial application of intelligent manufacturing, additive manufacturing, artificial intelligence, and other cutting-edge technological advancements in production. This promotes the growth of emerging consumer goods like wearable technology, intelligent hardware, immersive experience platforms, and digital media.   Finally, allow me to give you a little introduction to Jiangxi Province, a stunning location. Jiangxi, a lovely region with a profoundly splendid ancient culture, is known for its “Natural Treasures, Outstanding People” reputation. This region has produced numerous cultural ancient relics and scenic spots, including Lushan, Jinggangshan, Tengwang Pavilion, Jingdezhen Folk Expo Area, Cradle of the Republic of Ruijin Scenic Spot, and others. The Kuangshan World Cultural Heritage Site, also known as Lushan, is situated in Jiujiang City, Jiangxi Province, and is well-known around the world. Chinese poets including Bai Li, Juyi Bai, Shi Su, Anshi Wang, and You Lu used it to create more than 4000 historical poetry and songs. Mount Lushan is renowned for its education, culture, and religion and has a rich cultural history.

Dear friends, thanks for your attention, support and love to Kingtech in the past year. Chinese Spring Festival in 2022 is coming soon! Best wishes to you, your family and your friends in the New Year! Sincerely, All members of Kingtech group  

Greetings from Kingtech Group Christmas is coming soon. All members of Kingtech group are here expressing best wishes to you for a wonderful Christmas and a Happy New Year.   Celebrate for Christmas and New Year in China As you know, different places greet Christmas and New Year in different ways around the world. Most Chinese are accustomed to celebrating Christmas and welcome the New Year in the following ways, exchanging gifts, having a meal together with close people, or giving apples to others. Perhaps the most confusing way for you is the last one. Let me explain to you, the pronunciation of first character “apple” in Chinese is similar to the first word of the translation of “peace” in Chinese. Thus, apples could represent “peace and auspiciousness” in a new year. Kingtech Group with you welcome the coming of 2022 In the end, my friend, please join us together to welcome the new year 2022! May peace, love, happiness and prosperity follow you always.

Kingtech Team’s Preparation Life is not only including work, but distance and happiness. In the golden autumn of October with sunshine, in order to enrich employees’ cultural life and intensify team’s cohesion, Guangdong Kingshine’s One-stop Business Department Kingtech, organized all staffs to participate in the group construction activity, the destinations of which are Xunliao Bay and Lion City, Huizhou. We made full preparation for this event, some of colleagues in charge of different regions gathered in Shenzhen. At 9:30 am on the first day, we arrived at the company on time and took a group photo first. Let’s go! Kingtech Team on the way About two hours’ drive later, Kingtech Team arrived at Xunliao Bay, one of the destinations of this journey. Along the way, we enjoyed the beautiful scenery and talked with each other happily, which enhanced our mutual affection. After lunch, we arrived at Victory Air villa to check in, took a rest and then went to a seascape restaurant for BBQ. Everyone was eager to show their exquisite barbecue skills. Blowing the sea breeze, listening to the waves, eating delicious meals, happiness is such simple. During this period, we introduced each other, shared our successful work experience, which enhanced communication and interaction among employees, and effectively promoted the construction and development of the team. The end of the beach barbecue means the first day is over! At 10 o ‘clock of the second day, all the members with the joyful mood set off for the second destination，The Lion City. When we arrived, we immediately was obsessed by the square with European architectural style, and put forward phones to record, then, all of us took a group photo, the background of which is live buildings group with European baroque style! As the banner says, “Harmony, innovation, unity and struggle”, it reflects the spirit and will of KingTech’s people. In the Lion City scenic area, we not only watched Multi-media Water Show in the Victory Square and the Mermaid Show, but also experienced the Karting races, sports climbing, haunted house, indoor CS battle and so on. The happy and relaxing atmosphere lets everyone temporarily put down the busy work, release the pressure and adjust our own state in time.   In the laughter, the group construction activity was close to the end. At 5 o ‘clock in the afternoon, we returned back to our warm home – Shenzhen. Kingtech Team’s Feelings and Gains The group construction activity, made the relationship between Kingtech colleagues become closer, and also let us feel the company’s outstanding team culture of unity, trust and harmonious cooperation. Thus, we will devote ourselves to the future work and life in a more concentrated and positive condition, be consistent with our original aspiration, challenge and achieve ourselves. Live up to the time, bravely go ahead!