
Key Considerations in the Design of Rigid Flex Boards
As PCBs evolve towards being lighter, thinner, smaller and more compact, rigid flex boards (also known as rigid-flex assemblies) have emerged as a key technology for reducing the size and

Choosing between gold plated circuit board and immersion gold plated boards
As IC pin densities increase and signal frequencies rise, the choice of PCB surface treatment process has become particularly critical. Gold plated circuit boards were once favoured for their high

Key Points of FCT Testing
What is FCT testing? The core principle of FCT (Functional Circuit Test) is to treat the PCBA as a complete functional module, simulate its actual operating environment within the end

Substrates and processes for rigid PCBs
The defining characteristic of rigid PCBs (rigid printed circuit boards) is that they are ‘non-flexible’; relying on their rigid substrate, they provide stable support and electrical connection pathways for electronic

Types of Functional Structures in IC Packaging and Methods for Selection
IC packaging involves encapsulating the bare die—cut from a wafer—into a complete component that can be directly mounted onto a PCB. It fulfils three fundamental functions: establishing an electrical connection

Key Points in RF PCB Design and Manufacturing
What is a RF PCB? Put simply, a RF PCB is a printed circuit board specifically designed for the transmission and control of radio frequency and microwave signals. Within the

Design and Applications of Through Hole PCB Technology
In the field of PCB design and assembly, through hole PCBs remain a core technology—even though surface-mount technology (SMT) now dominates most modern devices. Many engineers still opt for through

Practical 6 layer PCB Design
As electronic products continue to evolve towards lighter, thinner designs and higher levels of integration, hardware design is no longer confined to simple two- or four-layer boards. 6 layer PCBs

An In-Depth Analysis of Hardware PCB Proto Board Development
Redefining the PCB Proto board : A Core Hub and Risk Control Point in Hardware Product Development In the grand narrative of hardware innovation, the PCB prototype is often misunderstood

Principles and Applications of Millimetre Wave Radar
Millimetre wave radar is a precision detection device operating in the 30–300 GHz millimetre wave band. Its wave length lies between that of microwaves (1–100 mm) and far-infrared waves (0.75–1

Innovations in the metallisation of millimetre wave radar antennas
In millimetre wave radar systems, the antenna is the core component that determines system performance; its design and manufacturing process directly influence detection range, angular resolution, sensitivity and interference resistance,

Classification of PCB Thickness and Its Impact on Performance
In printed circuit board (PCB) design, pcb thickness is a crucial parameter. Currently, 1.6 mm is the most commonly used standard thickness in the vast majority of general-purpose applications, such

Causes and Solutions for Blackening of Gold Plating on PCB Boards
During the PCB manufacturing process, the darkening of the gold plating layer is a relatively common cosmetic defect. This not only affects the visual appearance of the product but may

Strategies for Preventing Delamination in High TG Laminates
High TG laminates refer to materials with a Tg value typically above 170°C; for example, common lead-free compatible laminates can have a Tg of around 185°C. Furthermore, the thermal decomposition

FR4 PCB baking process
In the electronic assembly process, the baking of FR4 PCBs may seem unremarkable, but it is in fact a critical step that determines the quality of the solder joints. Its

Differences between rolled copper and electrolytic copper in high frequency PCBs
Rolled copper and electrolytic copper are the two main types of copper foil used in high frequency PCBs for lamination with PTFE boards. Due to differences in their manufacturing processes,

Thermal conductivity of PTFE PCBs
Unlike standard PCB substrates, the thermal conductivity of PTFE PCBs is not determined solely by the substrate itself, but rather by the combined effects of substrate properties, filler modification, manufacturing

Types, Processes and Advantages of Ball Grid Arrays (BGAs)
What is a BGA? When dealing with high-density integrated circuits (ICs) – such as microprocessors or complex ASICs – you are likely to encounter ball grid arrays (BGAs). Unlike traditional

Multilayer RF PCB Design
Unlike standard PCBs, the core of multilayer RF PCB design lies in balancing signal integrity with manufacturability. High-frequency signals are prone to attenuation, reflection and crosstalk during transmission, and the

FPC laminate design
Flexible printed circuit boards (FPCs), with their inherent properties of being bendable, foldable, lightweight, and compact, are ideally suited to the requirements of tight spaces and complex structural assemblies in

Differences in the stacking structures of through hole board and HDI board
The stack up design of a PCB (printed circuit board) directly determines its electrical performance, mechanical reliability, manufacturability and cost. Among these, Through Hole Board and HDI boards are the

An Analysis of High-Density Interconnect (HDI PCB) Technology
HDI PCB(High Density Interconnect) is a core PCB manufacturing process designed for high-density wiring, characterised primarily by the use of micro-blind vias and buried blind vias to achieve efficient interconnection

Understanding Substrate Diode and Packaging Substrate
In the efficiency race of power electronics systems, engineers often focus on “front-end parameters” such as the on-resistance, gate charge, and reverse recovery charge of switching devices. However, a deeper,

PCB Circuit Formation Processes: Tenting, SAP and mSAP
In the field of PCB manufacturing, the circuit patterning process is a critical factor in determining the performance and quality of the PCB. Among these, Tenting (subtractive process), SAP (semi-additive