Understanding the classification and processes of PCB manufacturing processes and mastering basic PCB manufacturing process capabilities are the foundation for PCB manufacturability design. Classification of printed circuit boards Printed circuit board according to the production material can be divided into rigid printed circuit board and flexible printed circuit board. Rigid printed circuit boards are phenolic […]
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
Electrostatic spray coat is the use of high-voltage electrostatic field to make negatively charged paint particles along the electric field in the opposite direction of the directional movement, and will be adsorbed on the surface of the workpiece paint particles of a spraying method. Electrostatic spray equipment consists of spray gun spray cup and electrostatic
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
Electrical Contact Pad is a conductive area on a PCB (Printed Circuit Board) used to connect electronic component pins or wires. The pad is usually made of copper and is plated (such as tin or gold) to enhance its conductivity and corrosion resistance. The quality and design of electrical contact pads are critical to PCB
PCB, the Chinese name for the printed circuit board, also known as printed circuit boards, is an important electronic component, is the support body of electronic components, is the carrier of the electrical connection of electronic components. Because it is made using electronic printing technology, it is called printed circuit board. Source PCBs, the interconnection
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,
PCB is the abbreviation of Printed Circuit Board. Also known as printed circuit board or printed circuit board. it is called a “printed” circuit board because it is made using electronic printing. A printed circuit board is a substrate used for assembling electronic components. 1. Printed circuit board (PCB) It is a printed board that
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
PCB circuit board is an indispensable component of modern electronic equipment. It is based on strong fiberglass and coated with one or more thin layers of copper foil to connect and support electronic components. Part 1: Basic knowledge of PCB circuit boards Before we dive into the design aspects of PCB circuit boards, let’s first
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
“370 hr” is a common PCB material type, which is a high-performance epoxy resin matrix commonly used to manufacture electronic equipment that requires high-temperature and high-frequency performance, such as high-speed communication equipment or aerospace equipment. This material has good thermal stability and mechanical properties, making it suitable for complex circuit designs. It has an important
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,
