Ceramic Capacitor Vibration

A ceramic capacitor is a fixed value capacitor where the ceramic material acts as the dielectric it is constructed of two or more alternating layers of ceramic and a metal layer acting as the electrodes the composition of the ceramic material defines the electrical behavior and therefore applications.

Ceramic capacitor vibration.

By the equipment manufacturer if necessary. Vibration resistance is also greatly enhanced by the panasonic anti vibration features along with the reduced height volume and weight. There is almost no noise generated by the capacitor itself. This faq will discuss some aspects of this singing capacitor phenomena.

Among failure modes there are open circuit failures and short circuit failures. Applications where vibration resistance is critical are becoming more common and manufacturer panasonic is responding with vibration proof components in their capacitor ranges. Take the measures of fixing the capacitor etc. When a crack occurs on the element of an mlcc multilayer ceramic chip capacitor due to depaneling of the print circuit board screw fastening or shock from a vibration or a drop it may lead to a short circuit failure.

However when a capacitor is mounted on a board the vibration increases and when the cycle of the amplitude reaches the audible frequency range 20hz 20khz of humans it can be heard as a noise. This is sometimes described as a singing capacitor and is actually a piezoelectric effect. Ceramic capacitors faq. Singing capacitors piezoelectric effect abstract in some applications design engineers are finding a vibration or low audible hum coming from certain ceramic capacitors.