SMBJ5347B/TR13

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Diodes - Zener - Single

SMBJ5347B/TR13 is a high-voltage diode providing fast switching and improved halo current capability. This diode is suitable for a variety of applications, ranging from power semiconductor applications to ultra-high voltage. It is also known for its good thermal stability and excellent ESD protection.

Application Field

The main application field of SMBJ5347B/TR13 is in power management and circuit protection applications, such as surge protection and voltage regulation. It can be used in high voltage applications such as automotive, telecom, high-end industrial and medical, as it can be protected from various kinds of transients, spikes or transverse current or voltage caused by external electromagnetic interference. Besides that, it can be used in rectification circuits, as pulse current flows through very fast due to its low switching time.

Working Principle

The SMBJ5347B/TR13 is based on the working principle of a Zener Diode. It consists of two diodes connected in opposite directions. When the anode is positive with respect to the cathode, the diode acts as a simple diode, allowing current to flow in either direction. However, when the cathode is made positive with respect to the anode, the diode switches off, acting as a short-circuited switch. The reverse voltage voltage is limited to a specific value, known as the break down voltage. The SMBJ5347B/TR13 Zener diode has a break down voltage of 13V.

When a surge event occurs and a voltage above the break down voltage is applied to the diode, a large current flows through it until the diode switches off. The lower the reverse voltage, the higher the allowed current. This current flow is known as the halo current, and it is one of the properties that makes this type of diode very good for surge protection applications.

The SMBJ5347B/TR13 Zener diode offers a high level of protection from various kinds of power surges. It is also able to withstand extreme temperatures, making it a very reliable choice for a wide variety of applications.

Conclusion

The SMBJ5347B/TR13 Zener diode is a versatile high-voltage diode designed for use in a wide range of applications, ranging from power management to circuit protection. It features a very fast switching time and good halo current protection, making it ideal for use in protecting circuits from external transients and surges. Additionally, it is able to withstand extreme temperatures and offers excellent ESD protection.

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