Conventional wave soldering is a mature and widely used mass welding technology, by inserting plug-in components into the PCB board, and then the whole through the solder wave to complete the welding, to achieve efficient mass production. This process is particularly suitable for soldering a large number of plug-in components, and the effect is particularly […]
Wave soldering as a key process widely used in the field of electronic manufacturing, the stability and precise control of the process is an important guarantee to ensure the quality of welding. Wave soldering process control:(1) flux (solder) sprayingDouble-sided tape is used to paste the paper on the surface of the printed circuit board (PCB)
High voltage pcb design has an important position in modern electronic equipment, especially in the fields of power electronics, industrial control and new energy vehicles. As it involves high voltage and current, the design must strictly control key parameters such as creepage distance and electrical clearance to ensure the safety and long-term stable operation of
High current pcb connector is an electrical connector that can be connected and disconnected under high current and high voltage conditions, and is mainly used for connecting high power supplies and loads that can transmit currents of tens to thousands of amperes. Its features include the ability to withstand high currents, high temperatures and high
Laser engraving pcb board is the process of processing and engraving circuit boards using laser technology. Laser engraving pcb board mainly uses the laser’s high energy density and precise control ability, through the laser beam directly on the circuit board for cutting, engraving and marking operations. Basic Principle of Laser engraving pcb board MarkingThe basic
Circuit board assembly machine is a very important equipment in the semiconductor industry, which is mainly used to automate the assembly of electronic components and circuit boards. According to its different assembly methods, circuit board assembly machine can be divided into two types: surface mount assembly machine and through-hole assembly machine. Surface mount assembly machine
In the field of electronic manufacturing, double-sided PCB board assembly by virtue of its high integration, small size and other advantages, widely used in various types of electronic products, from smart phones, tablet computers to industrial control equipment, automotive electronic systems, are inseparable from its figure. It can not only effectively save board space, but
Custom PCBA refers to the customised design and production of PCBA products according to customer requirements. This includes selecting the right components for the specific application, designing a board layout that meets the requirements, and adopting appropriate processing techniques. The advantage of custom PCBA is that it can meet the specific needs of customers and
High frequency pcb and high speed pcb belong to the same PCB circuit boards used for signal transmission, however, there are significant differences between the two in the actual application scenarios, mainly reflected in the following. Frequency band application differences: high frequency pcb focus on frequency bands above 500MHz, specifically to cope with high-frequency signal
The MSL (Moisture Sensitive Level) standard is a classification system used by the electronics industry to assess the sensitivity of components to moisture, which classifies components into eight different levels based on their sensitivity to moisture. These levels reflect the amount of time a component can be safely stored under specific temperature and humidity conditions
The fundamentals of RF circuit design include： RF Circuit Layout PrinciplesWhen designing an RF layout, priority must be given to meeting the following general principles: (1) As far as possible to isolate the high-power RF amplifier (HPA) and low-noise amplifier (LNA), in short, is to keep high-power RF transmitter circuits away from low-power RF receiver
Solder Joint Pillow, also known as the pillow effect (Head-in-Pillow, HIP), is an undesirable phenomenon in which the solder balls of BGAs, CSPs and other components fail to fully fuse with the solder, resulting in the failure to form good electrical connections and mechanical solder joints. This phenomenon is similar to the shape of a
As a key necessary step in the integrated circuit manufacturing process, chip packaging and testing plays a vital role. Specifically, this link will carry out a series of fine operations on the wafers that have passed the quality inspection, and complete the wafer cutting, chip welding and overall plastic sealing processes with the help of
BGA Test Fixture (Ball Grid Array Test Fixture) is a test tool for testing BGA chips, which can provide electrical test, signal acquisition and programming functions for the chip. In the design of the BGA test frame, you need to consider the PCB (Printed Circuit Board) with the design, because the layout of the PCB
A potentiometer circuit board is an analogue circuit element used in electronic circuits, usually to adjust the resistance of a circuit in order to control its performance and function. It usually consists of a rotary potentiometer, a potentiometer resistor, two connecting wires and two connectors. Potentiometer circuit board is mainly composed of a rotary potentiometer,
BGA pad diameter tolerance, that is, the maximum allowable deviation range of the diameter of the ball grid array package pad. In the manufacturing process of electronic components, the control of tolerance is crucial, which directly affects the quality of the pad and the reliability of electronic products. Reasonable tolerance range can ensure that the
Circuit boards are classified according to their self-extinguishing time after fire ignition, and are usually classified into three grades: UL94 V-0, UL94 V-1, and UL94 V-2. The evaluation of the flame retardancy of circuit boards is based on the UL94 standard. The test method covers both horizontal and vertical test situations. In the horizontal test,
A remote control circuit board is an electronic device used to remotely control equipment. It is based on wireless communication technology and uses wireless signal transmission between the transmitter and receiver to achieve remote control of equipment. The working principle of the remote control circuit board is as follows:Firstly, the key operation on the transmitter
High voltage pcb is circuit board that can withstand high voltages and are commonly used in high-voltage electronic equipment. It must not only be able to withstand high voltages, but must also have excellent insulation properties and high temperature resistance, so as to ensure that no failure or damage occurs in the high-voltage operating environment.
Flexible Printed Circuits (FPC) as electronic equipment thin and highly integrated core carrier, its welding technology directly affects product performance and reliability. Common soldering methods for flexible circuit boards:Thermocompression SolderingThermocompression Soldering as a FPC (Flexible Printed Circuits) flexible boards, a mainstream connection process, the core mechanism is the use of heat and mechanical pressure synergistic
The hard drive pcb board acts as a bridge between the internal hard drive and the motherboard of the computer, and its role is to convert the electrical signals received from the interface into magnetic information, which can be recorded on the hard drive platters (this is a write operation); at the same time, it
Why FPC SMT must use the fixture, FPC flexible board has a unique physical characteristics, so it can not be directly applied to the standardised SMT (surface mount technology) production process. The special carrier with its deformation suppression, thermal conduction optimisation, precise positioning, electrostatic protection and process compatibility and other five core functions, can effectively
Plating is an extremely critical step in the FPC manufacturing process. Plating not only strengthens the circuit’s conductivity, but also improves its corrosion resistance and appearance. FPC (Flexible Printed Circuit) is plated on the following levels:Optimisation of conductive propertiesMetallic gold has excellent conductive properties. When an FPC is coated with metallic gold, the conductivity of
Circuit board aging refers to the natural phenomenon of gradual changes in the properties, structure and performance of circuit board materials after long-term use of electronic equipment. The effects of circuit board aging: Preventive measures for circuit board aging Circuit board aging workflowExperiment preparation stageAging environment constructionNeed to plan a dedicated aging test space (aging
