SMCJ30A-E3/9AT

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Transient Voltage Suppression Diodes (TVS) are used to provide electrical protection against oversurges in voltage. One such device is the SMCJ30A-E3/9AT TVS Diode. It is designed to protect electronic circuits from over-voltage transients, including lightning, inductive load switching, and static electricity. This diode has great impact absorption capability and is suitable for a variety of applications. In this article, we will look at the applications and working principle of the SMCJ30A-E3/9AT.

The SMCJ30A-E3/9AT is an unidirectional transient voltage suppression (TVS) diode. It has a peak power rating of 600W and a peak pulse current rating of 27A (10/1000μs). It offers a low dynamic resistance of 82mΩ typical at 10A pulse current, making it an ideal choice for protecting sensitive digital circuits from over-voltage transients. In addition, its operating temperature range is -55 to +150℃, making it suitable for high-temperature environments.

Applications:
The SMCJ30A-E3/9AT has a wide range of applications. It can be used in telecommunications systems, video/audio systems, commercial equipment, appliances, automotive components, and many other consumer electronics. It is an ideal choice for over-voltage protection in both AC and DC line applications, as well as Power Distribution and SMPS, LED lighting, and industrial control applications. For instance, it can be used to protect critical components such as microprocessors, DSPs, ASICs, and FPGAs from destructive power transients in these systems.

Working Principle:
The SMCJ30A-E3/9AT is a high reliability, unidirectional Transient Voltage Suppression (TVS) diode that acts like a bidirectional unidirectional switch which is designed to protect sensitive circuits from voltage transients. The diode has a peak power rating of 600W and a peak pulse current rating of 27A due to which it offers a low dynamic resistance of 82mΩ typical at 10A pulse current. When an over-voltage transient occurs, the diode reacts quickly by shorting the current, limiting the voltage on the protected circuit to the diode’s breakdown voltage. This prevents the damage to sensitive components.

Conclusion:
The SMCJ30A-E3/9AT is a unidirectional transient voltage suppression (TVS) diode designed to protect electrical circuits from over-voltages caused by lightning, inductive load switching, and static electricity. It has a wide range of applications, from telecommunications and commercial equipment to automotive components. The diode is ideally suited for protecting sensitive digital circuits from over-voltage transients, as it offers a low dynamic resistance and great impact absorption capability. Further, its wide operating temperature range makes it suitable for high-temperature environments.

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