The principle of multilayer PCB design is to lay out different circuit components according to their functions and locations, and then connect them through wires. During the design process, various factors need to be considered, such as the selection of parameters for components such as resistors, capacitors, inductors, etc., the routing of signal wires, and […]
The drilled hole tolerance of a pcb board is the tolerance between the diameter of the holes or slots drilled or milled during the PCB manufacturing process and the design requirements. This tolerance requirement is to ensure that the components on the board are installed correctly and can be well connected. Generally, the hole diameter
Flip chip packaging technology, also known as FC packaging technology, is an advanced integrated circuit packaging technology. In traditional packaging technology, the chip is encapsulated at the bottom and connected to the package substrate through gold wires. Flip chip technology, on the other hand, flips and mounts the chip directly onto the package substrate, and
Thermal board,as a kind of thermal isolation material, its main function is to block the transfer of heat and ensure the effective isolation of heat energy. In the fields of construction, pipe insulation and air-conditioning pipe insulation, thermal insulation board plays a vital role in significantly reducing heat loss and thus improving the utilization of
Flex PCBA refers to printed circuit boards and their assembly technology made of flexible materials. This kind of circuit board is characterized by high wiring density, light weight and thin skin, and is constructed very reliably on the basis of flex, capable of bending, twisting and folding. It is suitable for special shapes and can
What is fct? It refers to a test method that provides a simulated operating environment (excitation and load) for a test target board (UUT: Unit Under Test) to operate in a variety of design states, so as to obtain the parameters of each state to verify the functionality of the UUT. Simply put, the UUT
In the world of electronics, the circuit board is the bridge between the various electronic components and the basis for realizing the function of the circuit. For electronics hobbyists, innovators or professionals, designing and make your own pcb board is a fun and challenging task. Defining the design requirementsBefore you start designing a circuit board,
In the field of electronic design, PCB layout is a crucial part. For beginners, how to quickly and accurately complete the PCB board layout is a major challenge. Fortunately, there are many free PCB layout program on the market, these tools are not only powerful, but also easy to get started, for electronic design beginners
Wave soldering refers to the molten brazing material, by electric pump or electromagnetic pump jet into the design requirements of the solder crest, can also be formed by injecting nitrogen into the solder pool, so that the pre-loaded components of the printed circuit board through the solder crest, in the brazing material surface to form
The dielectric constant is an indicator of a material’s capacitive properties in an electric field, and it measures a material’s ability to store charge in an electric field. For PCB boards, the pcb dielectric constant DK value reflects the capacitance capability of the insulating layer of the board and is used to define the electrical
Flux is a chemical substance that removes oxides or other contaminants from the surface of the PCB, the solder itself, wets the metal surface to be soldered, protects the metal surface from re-oxidizing while soldering, reduces the surface tension of the molten solder, and facilitates the expansion and flow of the solder. However, once the
Soldering cold joint is due to circuit board SMT processing in the reflow soldering process, the solder at the solder does not reach its melting point temperature or welding heat is not enough, so that in the wetting or flow before the solidification, not to form any metal alloy layer, so that all or part
PCB thickness generally refers to the total thickness of the entire board,including the substrate (e.g., FR-4, etc.) and the thickness of the copper foil on two or more sides. The “copper thickness” refers to the thickness of the copper foil on one or both sides of the board,commonly measured in ounces (oz) or microns (μm).
A pcb board connector is a connection system mounted on a printed circuit board.PCB connectors are typically used to transfer signals or power from one PCB to another, or from another source in the structure of a device to or from a PCB. Since PCBs are not hardwired to each other and can be assembled
Wafer testing is for each grain on the wafer for needle test, in the detection head mounted on a gold wire made of fine as a hair of the probe, and the contact on the grain to contact, test its electrical characteristics, unqualified grains will be marked,and then when the wafer according to the grain
Single point grounding means that there is only one physical point in the entire circuit system that is defined as the ground reference point, and all other points that need to be grounded are connected directly to this point. In low-frequency circuits, there is not much influence between wiring and components. Usually circuits with frequencies
To build passive power factor correction (PFC) circuits, we have traditionally relied on passive components such as capacitors and inductors to extend the current conduction angle and smooth the pulse to reduce harmonic distortion of the current. While this approach is simple and reliable, the size and cost issues of passive components come to the
Splicing boards is the process of laying out multiple circuit boards on a single large size board to form an overall board assembly. The purpose of it is to maximize the use of board space, increase productivity and reduce costs. Methods of splicing boards1.V-CUTV-CUT is to draw a slot in the connection of two boards,
VCC is a common term in circuits that means positive supply voltage. In digital or analog circuits, developers often need a widely available power supply to ensure that the circuit can operate properly. In such cases, the VCC voltage is usually set to a fixed value, such as 5V or 3V, so that all devices
What is pcba number?PCBA number (or SN code) is a unique code used to identify and track product information on PCBA (Printed Circuit Board Assembly) boards. This code is labeled when the PCBA semi-finished product is put into production. The purpose of this code is to facilitate the traceability of the production process of the
PCB antenna, also known as printed circuit board antenna, is a form of antenna in which the antenna is printed directly on a PCB (printed circuit board). This type of antenna plays an increasingly important role in modern wireless communication devices, especially in mobile devices, IoT devices and wireless sensor networks, where it is widely
PCB silver plating technology refers to the PCB surface covered with a layer of silver metal process. Silver as an excellent conductive material, with good conductivity, oxidation resistance, thermal conductivity and other characteristics. Through the silver-plated processing, PCB conductivity has been significantly improved, while enhancing its oxidation resistance and thermal stability, thereby improving the performance
PCB wiring is a critical step in PCB design, which determines the performance and reliability of the product. It refers to the process of rationally laying out and connecting wires, components, etc. on a circuit board when manufacturing a printed circuit board (Printed Circuit Board, or PCB for short). This process needs to follow certain
PCB CNC milling machine is an advanced point-to-point motion control system, which plays a key role in manufacturing high-precision printed circuit board through-hole. With the gradual miniaturization and refinement of electronic products, the printed circuit board conductive holes in the aperture, line width and line spacing requirements have become more stringent. Accordingly, PCB CNC system
