5KP30HE3/73

TVS (Transient Voltage Suppressor) diodes are a class of semiconductor components designed to be used in applications where voltage transients occur, such as from electrical arcs or spikes (electrostatic discharge). Among them, 5KP30HE3/73 is one of the most popular used type. It has been widely used in many potential applications, and this article will discuss its application field and working principle in detail.

Application Field

5KP30HE3/73 is mainly used to protect vulnerable components from electrical transients on power and signal lines in various automotive, industrial, telecom, and communication applications. It is suitable for data and signal line protection, motor drives, and switching regulator circuits. It can also be used in lightning and surge protection, such as in signal and data line protection, motor drives, and switching regulator circuits. In addition, its ESD (electrostatic discharge) rating is 15kV air gap and 8kV contact, meaning that it can protect sensitive components from damaging electrostatic discharges.

Working Principle

TVS diodes are designed to prevent the propagation of transients on power and signal lines. The 5KP30HE3/73 TVS diode is a bi-directional unidirectional suppressor diode. It is designed with a Zener diode structure connected to two non-polar capacitors, with each junction having a reverse breakdown voltage. In normal operation, it conducts very low reverse current and low forward voltage drop. When a transient voltage surge is present, the non-polar capacitor acts as a storage element, leading to a decrease in voltage and an increase in current until the avalanche breakdown occurs at a certain reverse voltage level. This action in turn reduces the over-voltage to a safe level. Once the transient has passed, the capacitors will return to their original state and the diode returns to its normal low voltage, low current state.

In summary, 5KP30HE3/73 is a very popular type of TVS diode that is used to protect vulnerable components from transient voltage surges. It has a high ESD rating, making it ideal for protecting sensitive components from damage due to electrostatic discharge. Additionally, it has a Zener diode structure connected to two non-polar capacitors which lead to a decrease in voltage and increase in current whenever a transient voltage surge is present, thus protecting the circuit from over-voltage.