SMAJ9.0CA-M3/5A

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SMAJ9.0CA-M3/5A is a kind of Transient Voltage Suppressor (TVS) - Diode component, which is widely used in various of electronic equipment on the market. It provides over-voltage protection and protection of various components in electronic systems. Before discussing its application field and working principle, first let\'s look at its features.

This TVS diode component has a transient voltage range from 8-12V, surge current rating of 5A, and bidirectional device. That means it can be welded on the PCB board directly without any extra equipments and provide bi-directional protection. Furthermore, it provides ESD protection, electrical fast transients (EFT) protection, and short circuit protection.

As for the application field, SMAJ9.0CA-M3/5A is mainly applied in the area of data line and interface USB protection, LED TV, automotive electronics, set-top boxes, center speaker protection, Bluetooth headsets and other consumer electronics.

When we look at the working principle of SMAJ9.0CA-M3/5A, there are mainly two parts. In over-voltage protection, the device will enter the conduction state, which provides a conductive channel, once there’s an over-voltage across the device, like in cases of lightning strike or surge, which allows the over-voltage current to flow from anode to cathode and thus protect the circuit behind it. Besides, in ESD protection, the device works with the electric potential difference of ESD impact directly affects the P-N junction of the device, which can induce the in-junction electric filed to trigger avalanche breakdown, thus providing ESD protection.

Therefore, SMAJ9.0CA-M3/5A is a widely used TVS diode with a wide range of application fields and working principles. It is usually used in the areas of data line protection, interface USB protection, LED TV, automotive electronics and other consumer electronics. Its over-voltage protection and ESD protection can protect the components in the electronic system from getting damaged due to lightning strike or surge.

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