Blog

How to Calculate PCB Impedance? Calculating PCB impedance ensures signal integrity, especially for high-speed and RF circuits. 1. Determine PCB Stackup & Geometry 2. Identify Dielectric Constant (Dk or εᵣ) 3. Choose Impedance Calculation Method Microstrip (outer layer trace over ground plane): Stripline (inner layer between two ground planes): Differential Pair: Requires spacing (S) between […]

What is a PCB? PCB Full Form: Printed Circuit Board, which is a substrate made of insulating material with copper circuits printed on its surface. It is primarily used to connect and support electronic components, providing stable mechanical support and electrical interconnection for precision components such as resistors, capacitors, and integrated circuits. What are the […]

Topfast provides differentiated rapid PCB services through industry-specific services, triple quality assurance, and intelligent manufacturing. It includes cost optimization cases, quality data comparisons, and technical trends to help companies choose the most suitable rush solution.

PCB reverse engineering is explained in detail, covering the entire process from pre-processing and layer-by-layer scanning to schematic reconstruction, revealing core technologies such as X-ray detection and 3D reconstruction. Professional solutions are provided for difficult issues such as multilayer board processing and high-speed signal analysis, and cutting-edge areas such as AI-assisted reverse engineering and quantum measurement are explored in depth.

A Topfast, especialista em soluções de PCB com 17 anos de experiência, confirmou presença na FIEE 2025 – principal feira de energia elétrica, automação e tecnologias inteligentes da América Latina. O evento, que ocorrerá de 9 a 12 de setembro no São Paulo Expo, reunirá mais de 1.000 expositores e 55.000 visitantes, com destaque para energias renováveis, armazenamento e smart grids.

A professional method for testing PCB resistors using a multimeter, covering safety standards, instrument selection, and specific measurement steps. This detailed analysis includes offline/online measurement techniques, error source analysis, and quality assessment criteria in accordance with IPC standards, as well as precision resistor measurement techniques and batch testing solutions.

Exploring the core principles of PCB design, from basic layout to high-speed signal processing, this article provides a detailed explanation of power integrity solutions, electromagnetic interference (EMI) suppression, and manufacturability standards, including impedance calculations, thermal management, and verification workflows.

Three main things affect how long PCBs last: how they’re treated during production, how they’re stored, and what the board itself needs. There’s a treatment plan for expired PCBs that’s been graded, and an engineering practice plan for extending the shelf life of PCBs. The plan encompasses advanced packaging technology, enhanced surface treatment options, and intelligent monitoring systems. All of this gives electronic manufacturing companies a complete PCB life management solution.

The PCB ground (GND) and metal chassis (EGND) are connected via a resistor-capacitor combination (typically a 1MΩ resistor in parallel with a 1-100nF capacitor) to suppress high-frequency noise, provide electrostatic protection, isolate power frequencies, and optimize EMC.

HDI PCBs are a core technology for the miniaturization of modern electronic devices, and their laminate structure design directly determines product performance and reliability. From simple single-layer lamination (1+4+1) to complex double-layer lamination (1+1+4+1+1), key design considerations are provided to achieve the optimal balance between space constraints, signal integrity, and manufacturing costs.