High layer count pcb, known in the industry as HLC (High Layer Count), are defined as through-hole printed circuit boards with six or more layers. With PCB manufacturing processes continuously evolving, boards exceeding 40 layers have now reached mass production and widespread market adoption — no longer a niche, high-end product. Thanks to their complex […]
SMT soldering quality is the foundation of electronic assembly reliability. Starting from the appearance criteria of high-quality solder joints, this article systematically analyzes the causes of typical defects such as tombstoning, solder balls, and solder bridging, and provides corresponding process control measures to offer practical guidance for on-site quality improvement. Appearance Standards for High-Quality Soldering
RF coaxial cable is a specialized transmission medium designed for high-frequency electromagnetic signals. Thanks to its unique coaxial layered structure, it offers key advantages such as stable impedance, excellent shielding effectiveness, low signal loss, and strong immunity to electromagnetic interference. As a result, it has become an indispensable transmission component in RF, microwave, and high-frequency
What Is CSP (Chip Scale Package)?According to the IPC/JEDEC J-STD-012 industry standard, a Chip Scale Package (CSP) is a surface-mount integrated circuit package whose overall package dimensions do not exceed 120% of the original die size. The term initially referred exclusively to packaging solutions identical in size to the semiconductor die itself. However, because such
The rapid evolution of global computing networks and 5G/6G communication infrastructure is accelerating the transition of optical module data rates from 400G to 800G and even 1.6T. Within this high-speed transmission ecosystem, the optical module PCB serves as the fundamental platform for optoelectronic signal transmission, component integration, and thermal management. As a result, it has
The Unbreakable “Space Magician”: Deciphering the Microscopic Topology of Double Sided Flexible PCBs In the demanding battlefield of modern consumer electronics, where the pursuit of “ultra-thinness” and “utilization of irregularly shaped spaces” is fierce, traditional rigid fiberglass circuit boards (such as FR4) are gradually being relegated to secondary roles in many core positions due to
Thanks to their high detection accuracy, strong interference resistance and high resolution, 77GHz millimetre-wave radars pcb are widely used in fields such as autonomous driving, smart security and driver assistance systems. As the core component responsible for signal transmission, current-carrying and heat dissipation, as well as structural support, the high-frequency transmission performance, copper thickness precision
Microscopic Photochemical Film: Deciphering the Material Essence of Presensitized PCB board In the era of modern electronics manufacturing, heavily reliant on large-scale automated factories, it’s hard for the average person to imagine that, without high-precision laser direct imaging (LDI) lithography machines, a high-precision PCB with linewidths accurate to a few mils could be manufactured in
With the rapid evolution of the consumer electronics, advanced semiconductor packaging, 5G communications and intelligent driving industries, electronic products are continuously evolving towards lighter, thinner, higher-density and higher-precision designs. Consequently, the manufacturing technology for printed circuit boards (PCBs)—as the core medium—is also undergoing constant innovation and evolution. From traditional, crude forming processes to refined, optimised
As an upgraded next-generation PCB interconnect technology, UHDI has comprehensively surpassed the process and performance limits of traditional HDI boards, precisely meeting the evolving demands of today’s high-speed electronics industry. The rapid deployment of 5G and 6G communications, the Internet of Things (IoT), High-Performance Computing (HPC), Artificial Intelligence, and high-end medical electronics is driving electronic
What is a glass substrate? Why has it become the core material for advanced packaging in the post-Moore’s Law era? Today, as the computing power of AI chips continues to rise and the number of transistors reaches the trillion-unit mark, traditional organic packaging substrates are approaching their physical limits in terms of transmission speed, wiring
The Microscopic World’s “Breakwater”: Electromagnetic Shielding The Physical Essence of Multilayer Boards In the macroscopic world of modern electronic design, various wireless communication technologies (such as 5G, Wi-Fi 6/7, Bluetooth, and GPS) enable our devices to seamlessly connect to the world. However, if we zoom out to the microscopic dimension inside the circuit board, it’s
In the AI computing hardware ecosystem, PCB boards serve as the cornerstone connecting chips to clusters. Whether it’s training large models with hundreds of billions of parameters or performing millisecond-level edge inference, these precision circuit boards are indispensable. The following is an overview of the main types of AI PCB boards in this field: Core
Optical modules are the core interconnection units in computing infrastructure such as data centres and 5G communications. As optical module speeds rapidly evolve from 100G to 400G, 800G and even 1.6T, the PCB boards that house their circuit and optoelectronic core components are undergoing a comprehensive technological overhaul. Today, PCB boards have long transcended their
“A Rock-Solid ‘Third Hand’: The Mechanical Essence of PCB Board Holders in Manual Soldering” In the R&D, prototyping, and after-sales repair stages of electronic products, although automated surface mount technology (SMT) lines can complete chip soldering at millisecond speeds, manual soldering and testing remain indispensable critical steps. For example, manually soldering bulky connectors onto freshly
High Frequency, high speed copper clad laminates (referred to as High Frequency copper clad laminates) are core PCB substrate materials designed for High Frequency signal transmission applications. The core manufacturing principle involves bonding a copper foil layer to the surface of an insulating substrate, thereby enabling the smooth and efficient conduction of electromagnetic waves. The
RF cable assembly is essential fundamental transmission components in RF and microwave systems. Their primary function is to enable low-loss, highly stable transmission of RF signals between different devices and modules. They are widely used in fields such as communication base stations, radar systems, satellite navigation, precision test equipment and wireless terminals. The complete assembly
The Paradoxical Unity of Light and Electricity: Deciphering the Physical Essence of ITO Glass Substrates In the world of materials science, “conductivity” and “transparency” are often seen as mutually exclusive enemies. According to the fundamental laws of solid-state physics, metals like copper, aluminum, and gold have excellent electrical conductivity because they are filled with a
With the rapid evolution of 5G/6G communications, optoelectronic displays, high-end microelectronics and aerospace technology, traditional PCB substrates are no longer able to meet the stringent requirements of high-end equipment, such as high-temperature resistance, high-frequency stability, optical transparency and high dimensional accuracy. Thanks to their unique physical, chemical and optical properties, glass substrates have become the
Winning at the Starting Line: How to Cut Hidden Costs Through Design for Manufacturability (DFM) In the business world of electronics manufacturing, many clients often focus the majority of their energy on schematic design and software debugging during product development. Only when the circuit board design is complete and ready for production do they hand
In the wireless communications industry, RF test cables are a core consumable in high-precision test systems, primarily used to connect test instruments to the device under test (DUT) to ensure high-fidelity signal transmission and measurement. Within the overall test architecture, the DUT is positioned between the signal generator and the signal analyser, whilst test accessories
PCB circuit boards can be categorised by structure into single-sided, double-sided and multilayer boards. Among these, the design of multilayer boards offers a high degree of flexibility, with no strict upper limit on the number of layers. Currently, high-end precision PCBs can exceed 100 layers and are widely used in high-end servers, aerospace and high-end
HDI PCB (High-Density Interconnect printed circuit boards) and conventional multilayer printed circuit boards are two types of PCB products in the electronics manufacturing sector that differ significantly in terms of application scenarios and technical standards. As electronic devices rapidly evolve towards miniaturisation, slimness, high performance and high integration, the limitations of traditional multilayer PCB manufacturing
Thanks to their superior physical properties and advantages in large-scale mass production, glass substrates have emerged as the key alternative solution in the advanced packaging sector for next-generation high-bandwidth, high-computing-power AI chips. As high-end AI chip processes continue to evolve, with increasing chip sizes and significantly higher integration levels, the physical limitations and process bottlenecks
