What Is a Snubber Capacitor?
A snubber capacitor is a device that suppresses transient phenomena and noise in power circuits. Positioned near switching transistors or diodes, it absorbs spike voltages and circuit-generated noise. This component stores charge, smoothing out rapid voltage shifts.
Its use spans power supply circuits, motor drive circuits, and electronic devices, enhancing both power supply and signal processing. Snubber capacitors mitigate transients and noise via RC snubber circuits—resistor and capacitor in series—and LC snubber circuits—inductor and capacitor in series.