TVS Diodes
A Transient Voltage Suppression (TVS) diode is a specialized semiconductor device designed to protect sensitive electronics from sudden voltage spikes (e.g., electrostatic discharge/ESD, lightning strikes, or switching surges). It operates by rapidly diverting excess current away from protected circuits, clamping the voltage to a safe level within nanoseconds. Unlike standard diodes, TVS diodes feature larger PN junctions to handle high-energy transients without damage
Core Working Principle:
1. Reverse Standby State:
In normal operation (voltage < breakdown threshold), the TVS diode acts as an open circuit with minimal leakage current.
2. Clamping During Surge:
When a transient voltage exceeds the reverse breakdown voltage(typically 5V–495V), the diode instantly switches to a low-impedance state, shunting current to ground and limiting voltage across the protected circuit
3.Self-Recovery:
After the surge passes, it automatically resets to standby mode.
Part Number
UNI-POLAR
BI-POLAR
Package
Device Marking Code
UNI
BI
Power Dissipation
Ppk(W)
Reverse
Stand-off
Voltage
VRWM(V)
Breakdown Voltage VBR @ IT
Min.(V)
Max.(V)
Test Current
IT(mA)
Max. Clamping Voltage @ IPP
VC MAX.(V)
Max. Peak Pulse Current
IPP(A)
Max. Reverse
Leakage @ VRWM
IR(μA)