SMB10J40AHE3/5B

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TVS - Diodes are an important component of modern electrical circuitry that protects sensitive devices and components from electrical transients. The SMB10J40AHE3/5B is a widely used device that is designed to suppress the undesirable effects of electrical transients. This article will discuss the application field of this device and its working principle.

Application Field

The SMB10J40AHE3/5B is a unidirectional version of the Uni-Directional Transient Suppression Diode – UTSD. This UTSD has application in the following fields:

• Data Communications Devices
• Data Storage Devices
• Networking and Switching
• Portable Electronics
• Power Supplies
• Video and Audio Systems
• Automotive Electronics

The UTSD helps in protecting sensitive devices and components from a wide range of overvoltage phenomena, such as electrostatic discharge (ESD), electrical fast transients (EFT), and inductive load switching.

The SMB10J40AHE3/5B is specially designed for advanced circuit protection applications within the most stringent requirements and is suitable for high-speed CL2 operations. It provides advanced protection against ESD transients that occur from 2V to 6V for both air- and contact-based discharges. The device also features an inherent low-capacitance-speed of operation that enables superior protection when compared to other UTSD devices.

Working Principle

When an electrical transient is applied across the SMB10J40AHE3/5B UTSD, it will work as a self-shorting, bidirectional device. The transient current will flow in both directions by utilizing the diode-like properties of the device. The device is designed with a unique resistive network structure which absorbs the transient energy in the form of heat. This will trigger the device into a low-impedance state, connecting the transient source to the protected device and absorbing the transient energy. This will effectively protect the load against the damaging effects of the transient.

In addition, the device features inherent high-frequency noise filtering which eliminates undesirable noise from the system. This is especially beneficial for applications that require a high level of signal integrity.

The SMB10J40AHE3/5B is a cost-effective solution for transient voltage protection. It offers an attractive performance to cost ratio, making it a preferred solution for many applications. The device is offered in 10mm package with a wide range of voltage ratings, making it suitable for a variety of application.

In conclusion, the SMB10J40AHE3/5B is a widely used UTSD device which offers an effective protection against transient voltage surges. Its applications are wide-ranging and include data storage, networking, automotive electronics and more. It also features inherent high-frequency noise filtering which makes it an ideal solution for applications requiring high signal integrity. Finally, its cost-effective design and wide range of voltage ratings make it an attractive solution for many applications.

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