1.5KE120A

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Transient Voltage Suppressor (TVS) diodes are an important component in all power systems. They protect the power systems from damaging voltage spikes that can occur during switching, load transients, inductive kickback and other power anomalies. The 1.5KE120A is a popular type of TVS diode that is used in automotive, industrial and consumer applications. This article will discuss the application field and working principle of the 1.5KE120A.

Application Field

The 1.5KE120A is a popular TVS diode for a variety of applications. This diode is designed to protect circuits from transient voltages in automotive, consumer, and industrial applications. In the automotive application, it can protect a circuit from voltage spikes that are caused by load transients. In consumer applications, the 1.5KE120A can be used to protect a circuit from voltages spikes that occur when switching on appliances, especially in low-quality power supplies. In industrial settings, the 1.5KE120A is used to protect circuits against surges and transients that can occur during switching and inductive kickback.

Working Principle

The 1.5KE120A TVS diode is a monolithic low capacitance device that can provide a secure clamping for high-energy, high-power transients. It has a breakdown voltage of 120 volts, a peak pulse current of 1500A, a maximum clamping voltage of 162 volts, and a maximum clamped energy of 50 J. The 1.5KE120A is designed to have a fast response time and a low capacitance to ensure that transient voltages are quickly clamped and damages are minimized.

The way the 1.5KE120A works is quite simple and efficient. When a transient voltage is detected, the diode will conduct current from the anode to the cathode, making it a forward-biased diode for a short amount of time. This current will cause the voltage across the diode to quickly rise, and the diode will clamp the voltage across the circuit to the breakdown voltage of the diode. This will prevent the voltage in the circuit from rising any higher and thus protecting the circuit from damage.

Conclusion

The 1.5KE120A TVS diode is a versatile and long-lasting protection for a variety of applications. It is designed to protect circuits from high-energy spikes in transient voltages that can occur in automotive, consumer, and industrial applications. Its fast response time and low capacitance make it a reliable protection against short-term high-power transients. The 1.5KE120A quickly clamps the voltage across the circuit to its breakdown voltage, preventing the circuit from further damage.

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