High frequency PCB Manufacturer-Shenzhen Chengchi Circuit Technology Co., Ltd.

Why is Impedance Testing Necessary for PCBs?

With the rapid advancement of technologies such as 5G communication, artificial intelligence, and high-speed computing, the operating frequencies of modern electronic devices have soared into the GHz range. As a result, impedance testing for printed circuit boards (PCBs) has evolved from an optional

Jul 06, 2026 55

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How DFM Optimization Proactively Mitigates Systemic PCB Assembly Defects

When PCB assembly lines encounter mass defects such as tombstoning, bridging, cold solder joints, component shifting, and persistently high rework rates, most factories habitually resort to adjusting solder paste parameters, calibrating pick-and-place machines, or modifying reflow profiles as reacti

Jul 04, 2026 394

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How to Select the Right Double-Layer PCB Based on Product Power Consumption and Thermal Requirements

In PCB design, selecting or designing a double-layer board (2-layer PCB) according to product power consumption and thermal requirements requires balancing cost, space, and thermal management efficiency. Since double-layer boards lack large internal ground planes to act as natural heat sinks, precis

Jul 03, 2026 340

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Core Parameters of PCB Substrates — Underlying Constraints on Trace Impedance, Crosstalk, and Routing Planning

Most hardware engineers are accustomed to finalizing trace topology, line width, and spacing before matching the laminate material as an afterthought. This common practice of "routing first, material selection later" often overlooks fundamental substrate properties—such as Dielectric Constant (Dk),

Jul 02, 2026 22

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Quantitative Control of Trace Spacing and Parallel Length! Analog PCB Routing Noise Reduction Guidelines

The degradation of the signal-to-noise ratio (SNR) in small analog signals is predominantly caused by in-phase superposition between crosstalk noise and the original signal. By rationally controlling the phase difference of crosstalk, partial noise cancellation can even be achieved to optimize overa

Jul 01, 2026 504

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Key Electrical and Physical Indicators in PCB Final Inspection Reports

PCB Final Inspection Reports (commonly referred to as Shipping Reports, QA Reports, or COC/COA) are crucial evidence for measuring whether a PCB meets design requirements and reliability standards. A comprehensive inspection report typically lists key indicators across several dimensions: electrical

Jun 30, 2026 107