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​What is PCB immersion gold?​ PCB Immersion Gold​​ (also known as ​​ENIG – Electroless Nickel Immersion Gold​​) is a surface finish process used in printed circuit board (PCB) manufacturing. It involves depositing a thin layer of gold over a nickel layer on the copper pads of a PCB through a c...

As electronic devices progress toward miniaturization and higher performance, chip packaging technology for printed circuit boards (PCBs) continues to evolve. Ball Grid Array (BGA), a high-density, high-reliability packaging technology, has become a key technology in modern PCB design. This article...

​​1. What is AOI inspection？​   AOI (Automatic Optical Inspection) is a core quality inspection tool for SMT (Surface Mount Technology) production lines. Using high-resolution cameras, multi-angle LED lighting, and intelligent image analysis algorithms, it performs real-time visual inspection...

​​I. Detailed explanation of the complete process of PCBA burning​​ PCBA burning is the process of writing firmware into the chip to ensure that the hardware can work properly. The complete burning process usually includes the following key steps:   ​​1. Preliminary preparation ​ · ...

1. ENEPIG Technology Overview   ENEPIG (Electroless Nickel Electroless Palladium Immersion Gold) is an important technological breakthrough in the field of PCB surface treatment in recent years. This process provides an ideal surface protection solution for modern high-density interconnected PC...

Spot welding technology   Spot welding is a technology that connects metals by local heating, and is mainly used for connecting thin sheet metals. Its working principle is to use two electrodes to apply high voltage current in a short time (usually 0.01-0.5 seconds) to make the contac...

1. The core advantages and key defects of immersion silver technology   Immersion Silver(ImAg)By chemically depositing a 0.1-0.4 μm dense silver layer on the copper surface, the PCB performance is significantly improved: welding strength is increased by more than 30%, contact resistance...

Ceramic PCB is a circuit board with ceramic material as the substrate, which plays a special role in electronic products. Compared with the common FR-4 material circuit board, ceramic PCB has more outstanding performance in thermal conductivity, insulation, high temperature resistance, etc., and is...

In the PCB (printed circuit board) manufacturing process,the surface treatment process directly affects its reliability, welding performance and service life. Different application scenarios have different requirements for surface treatment, so it is crucial to choose the right process. This article...

When you pick up a PCB, the first visual impact often comes from its bright colors: the classic green solder mask, the eye-catching white silk screen characters, or the dirt-resistant black coating on industrial equipment. These colors are not only a choice of design aesthetics, but also a functiona...

In PCB design, vias are key structures for interconnecting multi-layer circuits. Based on their penetration range and manufacturing process, vias are mainly divided into three types: through vias, blind vias, and buried vias. This article will systematically analyze their technical features and appl...

PCBs are usually composed of several layers with different functions, which work together to provide a guarantee for the stable operation of electronic products. Among them, the copper layer, soldermask layer and legend layer are the most critical parts, each of which plays a unique role and has a...