PCB Design - Multi-Layer PCB DesignWhich of the following is the correct order of layers in a typical four-layer PCB stack-up from top to bottom?ASignal - Power - Ground - SignalBPower - Signal - Ground - SignalCGround - Signal - Power - GroundDSignal - Ground - Power - SignalCheck Answer
Step-by-Step SolutionSolution:Step 1: Recall standard four-layer stack-up orderCommon order is Signal on top, then Ground, then Power, then Signal at bottom.Step 2: Match options with standard orderSignal - Ground - Power - Signal matches the typical order exactly.Final Answer:Signal - Ground - Power - Signal -> Option DQuick Check:Standard stack-up order = Signal - Ground - Power - Signal [OK]Quick Trick: Ground layer is usually just below top signal layer [OK]Common Mistakes:MISTAKESMixing power and ground layersPlacing power on topConfusing bottom signal layer position
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