TVS diodes: basics, function and their applications

TVS diodes, or Transient Voltage Suppressors, are the unsung heroes in the world of electronics. They protect circuits from dangerous voltage spikes caused by lightning strikes or electrostatic discharges. These diodes function like high-power Zener diodes and are available in unidirectional and bidirectional versions. While unidirectional TVS diodes block in one direction, bidirectional diodes protect in both directions – perfect for AC signals. Particularly intriguing is the "snapback" effect found in certain TVS diodes, which ensures effective voltage clamping. In modern electronics, from USB to HDMI, TVS diodes are essential for safeguarding data lines against overvoltage. This application note provides a deep dive into the workings and benefits of these small yet powerful components.

Content:

• Basics
• TVS Diodes with “Snapback” effect
• TVS Diode hybrid for signal and data lines
• DC and AC behavior of TVS diode arrays
• Final remarks

Download: ANP143