Many high-performance automotive auxiliary systems rely on radar to collect information around the vehicle. They are used to accurately calculate the distance and relative speed between the vehicle and the vehicle in front according to the principle of reflected wave. Bosch’s fourth generation long range radar sensor (lrr4) is designed on the basis of R…
TWS is the abbreviation of true wireless stereo, which means real wireless stereo. TWS technology is also based on the development of Bluetooth chip technology. According to its working principle, it means that the mobile phone connects the main headset, and then the main headset quickly connects the secondary headset through wireless way, so as…
The price of flexible PCBs (Printed Circuit Boards) can vary significantly based on a variety of factors. When determining the cost of flexible PCBs, consider the following key factors that can influence the pricing: Complexity of Design: The complexity of the PCB design, including the number of layers, the density of components, and the intricacy…
PCB, the so-called printed circuit board, is usually called rigid board. It is the support body of electronic components, which is a very important electronic component. PCB generally uses FR4 as base material, also known as rigid board, which cannot be bent or flexed. PCB is generally used in some places where there…
1. What kinds of ceramic PCB do you make now? We can do metal wiring on alumina, aluminum nitride, zirconia, glass, quartz. 2. How do you get through the vias? Our ceramic circuit board is connected when the ceramic substrate and copper foil are combined. Our products are drilled first and conducted with copper. Moreover,…
Ceramic substrate refers to the special PCB substrate with copper foil directly laminated on the surface of alumina (Al2O3) or aluminum nitride (AlN) ceramic substrate (single or double sided) at high temperature. Ceramic substrate has become the basic material of high power electronic circuit structure technology and interconnection technology. It is widely used in the…
It is very common for PCB factories to have no inventory, even for many conventional FR4 boards. At this time, in order to meet the delivery time, many board factories or marketing personnel will negotiate with customers, "can we change materials with the same performance level?" The customer will ask back, "which one to change?…
The electromagnetic interference produced by switching power supply often affects the normal work of electronic products. The correct PCB layout of switching power supply becomes very important. In many cases, a power supply designed perfectly on paper may not work properly during the initial debugging because of many problems in the PCB layout of the…
Digital signal processing chip (DSP) has high-performance CPU (clock performance over 100MHz) and high-speed advanced peripheral equipment. With CMOS processing technology, DSP chip power consumption is getting lower and lower. These great progress increases the complexity of DSP circuit board design, and compared with simple digital circuit design, it faces more similar problems. The following…
PCB board design needs to provide information: (1) Schematic diagram: a complete electronic document format, which can generate correct netlist; (2) Mechanical size: provide the specific position and direction identification of positioning device, as well as the identification of specific height limit position area; (3) BOM list: it mainly determines and checks the specified package…
1. IDE (parallel port hard disk) The full name of IDE is "integrated drive electronics", that is, "electronic integrated drive". The transmission speed of IDE is 100 or 133mb / s. its original meaning is the hard disk drive that integrates "hard disk controller" and "disk body". By integrating the disk body with the…
Via is one of the most important parts of PCB, and the cost of drilling usually accounts for 30% to 40% of PCB board making cost. From the design point of view, a via is mainly composed of two parts, one is the middle drill hole, the other is the pad area around the drill…
VENTEC electronics is a professional copper clad laminate manufacturer. Its business scope includes: R & D, production and processing of epoxy resin glass cloth copper clad laminate for single and double and multi-layer PCB, epoxy resin glass cloth PP for multi-layer PCB, and new instrument components and materials and related products for flexible circuit board.…
Polytetrafluoroethylene is referred to as PTFE, which has a wide range of use temperature, excellent chemical stability, electrical insulation, self-lubricating, aging resistance and other excellent properties. It is widely used in many fields. However, the application of polytetrafluoroethylene in device manufacturing often encounters problems related to its surface properties. Poor surface wettability can lead to…
1. What back drill? In fact, back drilling is a special kind of depth control drilling. In the production of multi-layer pcb boards, such as the production of 12-layer pcb, we need to connect the first layer to the ninth layer. Usually, we drill via holes (once drilling), and then aging copper. In this…
Why the bare copper pad on the side of QFN device and pad on the back side of SMT welding do not climb tin or the height of tin climbing can not meet the standard requirements in IPC, which is a knotty and headache problem. How to solve this problem, today we will talk about…
