EMC Question of the Week: November 18, 2024

four options for placing and connecting a high-frequency decoupling capacitor on a four-layer printed circuit board

An active device is mounted on a 4-layer board with a GND plane on Layer 2 and a VCC plane on Layer 3. The spacing between Layers 2 and 3 is 1 mm. Which of the four decoupling capacitors depicted in the figure provides the best high-frequency decoupling? 

  1. (a.)
  2. (b.)
  3. (c.)
  4. (d.)

Reveal Question of the Week - Answer 241118