capacitors

Passive components can go rogue beyond expected frequencies, resulting in parasitic effects sabotaging EMI suppression. Designers beware, a passive component's non-ideal behavior requires strategic handling.

You know that feeling when a capacitor’s datasheet claims one thing, but NRTL’s online certification directory tells a different story? This blog is all about that - specifically a capacitor rated X1 and Y1, but the certification directory only showed X1. Moral of the story? Double check those certs early in the game to avoid delays.

The authors evaluate the impact of capacitors and trace length on conducted emissions.

This month's blog explains X-type capacitors, which suppress emissions in switch-mode power supplies and variable drives.

Although understanding each capacitor type and behavior is daunting and difficult to memorize, it is prudent that every aspiring engineer and technician involved in design for EMC at least have a rudimentary understanding of what capacitor technologies are available.

This article presents the fundamentals and application of capacitors. What is a capacitor, and how do we select them? Techniques of selecting capacitors and things to consider when using capacitors are highlighted. Both practical examples and simulation are used to demonstrate the key points.

Resonance phenomenon is explained using several common decoupling capacitor configurations.

We investigate two four-layer PCBs with power and ground plane pairs spaced 3 mils and 30 mils apart.

We investigate two four-layer PCBs with power and ground plane pairs spaced 3 mils and 30 mils apart.

This article discusses CMOS inverter switching and shows the impact of a decoupling capacitor on the power rail signal integrity and radiated emissions.