SMBJ10D-M3/I

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The protection of the electronic circuits is more and more important in the ever changing modern world. The voltage surge, electrostatic protection, and transient current also impact the reliability of the circuit, thus we should choose suitable protection equipment to avoid the damage. SMBJ10D-M3/I is the one of protection equipment, it is a kind of transient voltage suppressor (TVS) diode that is suitable to be applied in the fields that the voltage is up to 10V and current is up to 600mA. In this article we will talk about its application field and working principle.

Firstly, let’s discuss the application field of the SMBJ10D-M3/I. As transient voltage suppressor diode, it has a wide range of application fields which are mainly focused on the power line and signal line. It can be applied to protect the power supply and the sensitive component in the circuit from the transient voltage and current. SMBJ10D-M3/I is usually packaged in industry standard SOT-23 package, so it can be connected to a wide variety of circuit boards. Besides, it’s bidirectional, so it can protect the electronic device from the transient current resulting from the ESD discharge.

Secondly, let’s discuss the working principle of the SMBJ10D-M3/I. When the voltage exceeds the voltage rating of the device, the principle of the zener diode will be used to protect the circuit. During the normal state, the zener diode works like a forward-biased diode, which means the current flows from the cathode to the anode. When the voltage is high enough, zener diode will act like a reverse-biased diode, the current will flow from the anode to cathode thus protecting the device from the damage. Besides, when the current exceeds 600mA, the TVS diode will be in breakdown state, the breakdown voltage depends on the device\'s characteristics.

Finally, it’s important to note that the SMBJ10D-M3/I should be used in the correct way. The operator should choose the ideal device according to the application demands, and pay attention to the temperature of the device when it works in the high current state. Additionally, the user must note that the device should not be operated over its rated power dissipation or absolute maximum rating which may cause damage to the device or safety hazard.

In conclusion, the SMBJ10D-M3/I is a valuable device. As transient voltage suppressor diode, it can protect the circuit from transient voltage and current, and its industry standard SOT-23 package makes it suitable for the usage of different metronic boards. However, the operator need to choose the ideal device according to the application demand and should not exceed the rated power dissipation or absolute maximum rating.

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