SMF20A-E3-08

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TVS diode technology encompasses a broad range of circuit protection devices used to protect electronic circuits from transients, such as induced ESD and lightning-induced surges. This article focuses on the SMF20A-E3-08 transient voltage suppressor (TVS) diode and its application field and working principle.

Overview of SMF20A-E3-08 TVS

The SMF20A-E3-08 diode from SMAZ Technology is a unidirectional TVS that can protect circuits from transient-induced stress, and can handle peak pulse current up to 20A. It offers low clamping voltage with a VClamp of 8.0V, making it suitable for high-frequency EEPROMs and other microcircuits. The diode also features fast response time, low leakage current, and excellent reliability.

Applications of SMF20A-E3-08 TVS

The SMF20A-E3-08 diode is used in a variety of applications, mainly for ESD protection. Examples of applications where this component is often used include telecom systems, networking equipment, interface cards, consumer electronics, and automotive systems. It is also suitable for applications where transient surges, such as electrostatic discharge (ESD) and lightning-induced surges, have to be protected.

Working Principle of SMF20A-E3-08 TVS

The SMF20A-E3-08 TVS diode is based on a voltage-dependent, unidirectional, silicon breakdown technology. The TVS diode is rated for operating voltages ranging from 5V to 48V, and can withstand voltages up to 90V. In applications, it is usually connected in parallel to the electronic component that needs protection, with the anode pin connected to the highest voltage point and the cathode pin connected to ground. When the TVS diode is subjected to a voltage surge, it conducts a high surge current until its breakdown voltage is reached. This breakdown voltage stops the current and dissipates the voltage across the device. The device then returns to its non-conductive state. This process typically happens in a few nanoseconds, ensuring that the protected component is protected against harmful transients.

Conclusion

The SMF20A-E3-08 TVS diode is a unidirectional, low-clamping voltage component used for surge protection applications. It offers fast response time, low leakage current, and excellent reliability, making it suitable for a wide range of applications. The diode is usually connected in parallel to the component that needs protection, and responds to transients by conducting a high surge current until its breakdown voltage is reached, dissipating the voltage across the device.

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