Transient-voltage-suppression diode
| STMicroelectronics Transil TVS devices | |
| Component type | Passive | 
|---|---|
| Working principle | avalanche breakdown | 
| Electronic symbol | |
| Top is unidirectional, bottom is bidirectional. | |
A transient-voltage-suppression (TVS) diode, also transil, transorb or thyrector, is an electronic component used to protect electronics from voltage spikes induced on connected wires.