PCB protective coating is thin layers of polymers applied to the surface of printed circuit boards, typically between 25μm and 150μ thick,to protect and electrically insulate circuits and pcb components from environmental stresses. These coatings ensure PCB reliability in environments where moisture, condensation, dust, dirt, salt, chemicals, abrasion, thermal and mechanical shock, and other factors […]
PCB layer means copper layer, PCB is made of copper layer + substrate compression and become, in addition to a single panel is a layer of copper, double-sided above the board are even number of layers. Components are soldered on the outermost layer, the other layers play a role in wire connection, but now there
Keyboard as an important bridge of human-computer interaction, the stability and reliability of its performance is crucial. As the “heart” of the keyboard, the design and maintenance of the keyboard PCB is directly related to the overall performance of the keyboard. How to design a keyboard pcbKeyboard pcb design process covers the entire process from
Keyboard PCB, also known as the keyboard printed circuit board, is the core component of the keyboard, the performance and stability of the keyboard plays a crucial role. In the keyboard, PCB is responsible for connecting and transmitting key signals and communicating with the computer through the USB interface. When we press a key on
Hard gold plating is an electroplating process for plating a layer of hard gold (Gold) on a metal surface, whose main components are pure gold and other alloying elements. PCB hard gold plating technology is mainly through the electrochemical method, in the PCB board surface deposition of a layer of high purity metal gold. In
PCB is the basic component of electronic products, any electronic products need to make PCB. then, PCB in electronic products, must be connected with other devices together, this is PCB interconnect. Generally speaking, PCB connection has three aspects: chip to PCB, PCB internal, PCB and external devices. Chip to PCB interconnectWith chip-to-PCB interconnects, the problem
Rogers 5880 sheet is a polytetrafluoroethylene (PTFE)-based material with a dielectric constant of 2.2 and is available in thicknesses ranging from 0.003 inches to 0.240 inches. The sheets are available in copper foil thicknesses of 0.5oz, 1oz, 2oz, and 3oz, with finishes of chemical gold plating, chemical silver plating, and chemical tin plating. The panels
What is fpga?FPGA is also a chip in essence, is a digital circuit-based integrated chip, is in the PAL (Programmable Array Logic), GAL (Generalized Array Logic) and other programmable devices on the basis of further development of the product. It is as a special integrated circuit (ASIC) in the field of a semi-customized circuits and
Dip soldering is a welding method, mainly used in the plug-in process and SMT red rubber surface, it will be pre-inserted components of the printed circuit board immersed in the molten state of the solder, so as to complete the circuit board on all the soldering points of the welding. The method is mainly used
RF circuit board design is an important branch in the field of electrical engineering, which focuses on the design, optimization, and implementation of circuits and systems used to process Radio Frequency (RF) signals. RF signals usually refer to electromagnetic signals with frequencies between several thousand hertz and several hundred gigahertz, and are widely used in
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
