domestic pcb manufacturer-Shenzhen Chengchi Circuit Technology Co., Ltd.

PCB Trace Width and Spacing: Avoiding Hidden Defects in Fabrication, Soldering, and Mass Production

Many PCB designs pass all EDA software DRC checks and simulations without errors, yet yield issues arise when sent for prototyping: open circuits, micro-short circuits between adjacent traces, solder mask bridge peeling, and solder ball bridging during SMT assembly. The root cause of many such probl

Aug 29, 2026 280

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What is a stepped hole? Basic principles and structural breakdown of PCB stepped holes

During hardware product development, many engineers mostly deal with conventional through holes, blind and buried vias. When it comes to high-power boards and fastening assembly requirements, stepped holes come into the design scope. Many designers, when using stepped holes for the first time, direc

Aug 28, 2026 471

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Thick Copper PCB Design: Don't Copy-Paste Rules from Standard PCBs! A Complete DFM Process Don'ts Checklist

Many junior engineers finish drawing thick copper PCB layouts and directly export the files for fabrication using the same design rules as standard FR-4 signal boards. They then receive DFM feedback from the manufacturer citing issues such as open circuits, insufficient trace width, solder mask bubb

Aug 27, 2026 451

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Electrical-Type PCB Stepped Vias: Reliability Control Under High-Current Conditions

For most engineers, the concept of stepped vias is confined to countersunk screw assembly. In reality, stepped vias have another critical application: electrical interconnect stepped vias, used in high-current PCB power boards. In energy storage systems, industrial inverters, and high-power power su

Aug 26, 2026 407

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High-Speed Signal PCB Trace Width & Spacing: Impedance, Crosstalk, and Differential Pair Design Guidelines

For high-speed interfaces such as USB, PCIe, Ethernet, and DDR, trace width and spacing are no longer dictated by current-carrying capacity. Instead, the core objectives shift to impedance control and crosstalk reduction. Many engineers apply low-speed design experience by arbitrarily setting trace

Aug 25, 2026 179

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What is PCB Silkscreen? A Layer Often Misunderstood by Engineers

Among all the layers in a complete set of PCB Gerber files, the Silkscreen Layer is something engineers interact with daily, yet it is frequently underestimated. Many engineers simply view silkscreen as the text and logos printed on the board—serving only an aesthetic or labeling purpose without aff

Aug 24, 2026 517