SMBJ70

The SMBJ70 is part of the Transient Voltage Suppressor (TVS) Diode family. This particular diode is specifically made for use in sensitive electronic components that need to be protected from voltage surges.

The SMBJ70 is a fast diode composed of semiconductors and other mono-crystal materials. It provides protection from voltage spikes by having marked breakdown voltage as well as very low clamping voltage. It also provides noise and interference suppression, and over-voltage protection.

The SMBJ70 is mostly used in consumer electronics, because it can handle large amounts of current due to the fact that it has a low leakage. It is perfect for devices such as mobile phones, personal computers, and digital cameras.

The working principle of the SMBJ70 is to light up and shape up the electric arc that is created within the semiconductor material when a surge of voltage power up. This arc is shaped up like a cone and it is dissipated towards the external, leaving only the normal steady state current path unaffected.

When a large voltage spike begins to occur, the SMBJ70 quickly detects the surge and instantly starts to conduct (clamp) in order to limit the voltage. As the voltage increases, the diode even further reduces the voltage to its specified level until the spike is completed and the surge is finished.

The particular structure of the SMBJ70 is designed to absorb a certain amount of surge energy, making it very efficient and reliable as a protective device. The device is also constructed in such a way that it has a high forward negative temperature coefficient (NTC). This means that if the temperature surrounding the device increases, the ability of the diode to conduct power increases as well, ensuring that the power is kept within the specified range.

In conclusion, the SMBJ70 is perfect for use in consumer electronics because it can handle large voltage surges and protects sensitive components. The working principle of the SMBJ70 is to shape up the electric arc that is created when the surge occurs, and to quickly clamp and limit the voltage. The device also has a high NTC which allows it to conduct more power when the temperature increases.