Welding porosity is a common defect encountered in welding production, formed by the absorption and release of gases (primarily oxygen, nitrogen, and hydrogen) within the weld seam. It not only reduces the effective cross-sectional area of the welded component but also causes stress concentration, significantly lowering the strength and toughness of the weld metal. This […]
A transistor is an electronic device with three terminals used to amplify or switch electronic signals. Its basic components are two semiconductor materials with opposite properties (called p-type and n-type), usually silicon. Typically used as a semiconductor device for amplifiers or electronically controlled switches, the transistor is the basic building block for regulating the operation
What is a dipole antenna? A dipole antenna is a basic antenna used to broadcast radio frequencies. A dipole antenna is named after the two conductors of equal length that extend from either side of the antenna. A dipole is an omnidirectional antenna, which means that it broadcasts frequencies in all directions at the same
Patch antenna is a commonly used antenna for wireless communication and is widely used in many small electronic devices. It has the advantages of miniaturisation, easy fabrication, easy integration and higher operating frequency band. The principle of patch antenna is based on electromagnetic induction and electromagnetic radiation. It is made of a metal sheet, which
A current divider, also known as a current shunt, is a component used to distribute current to support multiple circuits. It divider current from one circuit to multiple branch circuits, each of which can have a different resistance value as needed. Current divider key characteristics: Current divider is based on the principle of DC current
PCB shield cover is a component used to protect the internal components of electronic equipment from electromagnetic interference, generally used in places where it is necessary to prevent the leakage of radiation signals or to avoid the impact of external electric fields, such as communications equipment and computer motherboards commonly used on the PCB board
A pcb board clamp is a fixture used to hold and clamp circuit boards. It plays a very important role in the assembly and manufacture of circuit boards. There are many types of pcb board clamps and different types of clamps are used for different boards. According to the shape and size of the circuit
PCB High Frequency Board (RF Microwave PCB) is a special type of circuit boards used to process signals at higher electromagnetic frequencies. This type of board is commonly used in high frequency (frequencies greater than 300MHz or wavelengths less than 1 metre) and microwave (frequencies greater than 3GHz or wavelengths less than 0.1 metre) applications,
The computer pcb is an important electronic component that is widely used in various electronic devices such as computers, mobile phones, TVs and so on. It is the core component of these devices, responsible for connecting and coordinating the work of various electronic components. The circuits on the motherboard are precisely designed and laid out
A peelable solder mask PCB is a printed circuit board with a peelable solder mask (temporary solder resist) that protects certain areas during surface preparation or assembly. That is, sometimes a printed circuit board needs to have selected areas of the board protected from solder flow onto contacts, terminals and plated through holes (PTH) during
A breakout board, called both an adapter board and a breakout board, is a board-like device used to connect, convert, or extend the functionality of electronic equipment. It can establish a connection between different devices or components to achieve signal transmission, conversion or processing. Adapter boards are widely used in a variety of electronic equipment,
Exposed copper on pcb refers to the surface of the circuit board part of the copper foil is processed to remove the exposed place called exposed copper, also known as exposed copper over the holes, exposed copper heat dissipation, and so on. The PCB exposed copper is often used to strengthen the circuit board structure,
Alkaline etching solution for circuit boards, also known as passivation solution, is one of the widely used chemical etching solutions in the electronics industry for removing unwanted copper materials from circuit boards, and then generating a protective layer on the surface to protect the circuits on the boards from corrosion. The principle of action of
PCB board copper thicknesses are generally classified as 1oz (35μm), 2oz (70μm) and 3oz (105μm). Of course, the copper thickness depends on the type of board you are making. Copper thickness for switching power supplies with high currents is 2oz. for signal transmission, usually, 1oz is sufficient. Normal double-sided boards are 1oz. Multilayer circuit boards
Bluetooth Data Module is a PCBA board with integrated Bluetooth functionality for short-range wireless communication. By integrating the chip and peripheral hardware circuits onto the PCB and developing inbuilt programs to implement the Bluetooth function, the module is capable of data transmission and networking with MCU controlled devices. It is widely used in the fields
What is semiconductor packaging? Semiconductor Packaging is the process of processing a tested wafer into an individual chip according to the product model and functional requirements. The purpose of traditional packaging is to fix, lead and seal the cut chip, but with the advent of the post-Moore’s Law era, more and more steps that need
HDI PCB definition, High Density Interconnect Board, is a circuit board with high line distribution density using micro-blind/buried hole technology. It is able to achieve higher line density and finer wiring in limited space to meet the demand for miniaturisation, high performance and high reliability of modern electronic products. In the field of pcb board,
On a circuit board, RT usually stands for Thermistor, a component that is extremely sensitive to temperature. The resistance value of a thermistor changes significantly with temperature, so by measuring its resistance value, we can accurately deduce the current ambient temperature. This characteristic makes thermistors play a vital role in circuit functions such as temperature
PCB test points may look like just some pads or exposed copper skins, but their role in the entire production, debugging, testing and repair process is very critical. If the test points are not reasonably arranged, it will lead to difficult to test the circuit board, debugging time becomes longer, the difficulty of rework increases,
A transparent flexible PCB is a pcb board that can be bent and has a certain degree of flexibility without affecting its functionality. It is made of flexible materials such as polyimide or polyester film, allowing for compact circuit connections in a given space. Transparent flex pcb is lightweight and durable. It is this property
FPC flexible circuit board is widely used in modern electronic products due to their thin, lightweight and bendable characteristics. However, its unique physical properties also bring many challenges to the welding process, requiring fine process control and specialised coping strategies. Flexible circuit boards in the welding process should pay attention to: Quality inspection is a
In the production of flex board, material deformation and delamination are important factors affecting product quality. In order to avoid such problems, the following detailed coping strategies can be adopted: Substrate selectionThe choice of material directly determines the basic bending performance of flex board. In terms of substrates, polyimide (PI) and polyester (PET) are commonly
High speed digital pcb is circuit boards that can support high speed digital signal transmission, and are usually used in scenarios where the frequency of digital logic circuits reaches or exceeds 45MHz-50MHz, or where the delay of digital signals in circuits on the transmission line is greater than 1/2 rise time. Compared to traditional analogue
Leadless chip carrier refers to a chip substrate material that does not contain lead. Traditional chip carriers often use leaded materials because leaded materials have high plasticity and are easy to process during manufacturing, but leaded chips are harmful to the environment and the human body. Leadless chip carrier is widely used in the manufacture
