A Transient Voltage Suppression (TVS) diode is a specialized semiconductor device designed to protect sensitive electronic circuits from transient voltage spikes or surges, which can result from events such as electrostatic discharge (ESD), lightning strikes, power surges, and inductive switching. TVS diodes respond quickly to these voltage spikes by clamping the excess voltage and diverting the surge current away from protected components, preventing damage to the circuit.