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Electrical Performance Stability & Signal Integrity Degradation

FR-4 signal integrity degrades gradually due to dielectric variability, glass weave effects, and batch dispersion. This article explains why impedance and timing drift over time and scale.

2026-01-14

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FR-4 Material Behavior Under Thermal & Electrical Stress

FR-4 reliability is governed by time-dependent thermal, electrical, and moisture stress. This article explains why datasheet Tg, Dk, and loss fail to predict long-term behavior.

2026-01-14

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Stack-Up Architecture & Physical Constraint Modeling in FR-4 PCBs

FR-4 multilayer PCB failures are driven by Z-axis constraint physics, not symmetry rules. This article explains how resin, glass, and copper interactions govern reliability.

2026-01-14

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How to Select the Right RF Substrate for mmWave

Choosing an RF substrate for 24–81 GHz isn’t about datasheet Dk alone. This guide shows how frequency, loss, copper roughness and stack-up physics drive laminate selection for reliable radar and 5G hardware.

2026-01-07

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