As a circuit design engineer, when/why should I consider designing in a TVS component or protection network?
The optimum time for considering the use of TVS components in a particular circuit/system is during the first stages of design. It is easier to allot space for planned components at the beginning a design, rather than after the design is complete. Also, it is easier to calculate the effect the TVS component will have on signal and system performance. Lastly, today’s transient immunity standards (IEC or EN Standard) require a system/circuit to have TVS protection.