Snapback TVSs Deliver More Accurate And Robust Circuit Protection
by Kevin Parmenter, Taiwan Semiconductor, Brea, Calif., How2Power Today, Feb 14 2025
Focus:
One of the latest innovations in circuit protection is snapback TVS (transient voltage
suppressor) technology. While no device is perfect for all applications, the snapback TVS
brings the industry closer to the ideal protection solution for many applications. This
article begins by discussing technology and market trends driving adoption of TVSs. It
then reviews and compares the existing transient voltage protection devices, starting with
historical solutions like SCRs, and then moving onto the currently used gas discharge
tubes (GDTs), metal oxide varistors (MOVs), and conventional TVSs. The characteristics and
behavior of snapback TVSs are then discussed with data to illustrate the differences
between conventional and snapback TVSs. This leads to a discussion of application benefits
and an application example.
What you’ll learn:
- How to understand the circuit protection benefits of snapback TVSs versus conventional TVSs, GDTs and MOVs
- How to understand the operating characteristics of snapback TVSs
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