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PCB Design Spacing Guidelines for Optimal Manufacturing 1. Trace Design Specifications Minimum Trace Width: 5mil (0.127mm) Trace Spacing: 5mil (0.127mm) minimum Board Edge Clearance: 0.3mm (20mil) 2. Via Design Requirements Hole Size: 0.3mm (12mil) minimum Pad Annular Ring: 6mil (0.153mm) minimum Via-to-Via Spacing: 6mil edge-to-edge Board Edge Clearance: 0.508mm (20mil) 3. PTH (Plated Through-Hole) Specifications […]

What are PCB trace width and trace spacing? In printed circuit board (PCB) design, trace width and trace spacing are two fundamental yet critical parameters: 1. Industry Standard Minimum Trace Width and Spacing 1.1 Conventional Process Capabilities 1.2 Advanced Processes (HDI) 1.3 Extreme Challenges 2. Four Key Factors Influencing Trace Width/Spacing Selection 2.1 Current Carrying […]

Printed circuit boards (PCBs) are core components of electronic devices, and the sophistication of their manufacturing processes directly determines product performance, reliability, and market competitiveness. The four key technologies of modern, efficient PCB manufacturing processes are panelization, modular production, automation and intelligence, and special process optimization. As an industry leader, Topfast provides professional PCB solutions […]

The design purposes, electrical performance impacts, and inspection methods of unfilled solder pads (exposed copper areas) on PCBs, covering key knowledge points such as test point functions, signal integrity risks, and X-ray inspection technology, comply with industry standards such as IPC-610, and provide assistance for PCB design and manufacturing processes.

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.