SMC5K13AHM3/H

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Transient voltage suppressors (TVS) diodes, also known as clamp diodes or spike suppressors, are a category of diodes used to protect sensitive electronics from surge current transients in electronic circuits. A transient is an event that varies in intensity and has a sudden onset and short duration. A surge current transient is a brief flow of high current. TVS diodes are designed to limit the voltage by controlling the flow of the transient current. The SMC5K13AHM3/H is a particularly versatile TVS diode, capable of a wide range of applications.

Description

The SMC5K13AHM3/H is configured as a unidirectional circuit element that clamps the voltage when the associated transient peak exceeds a pre-defined threshold. This transient voltage suppressor assembly consists of two active components, an x-rated filament lamp and a P-channel MOSFET. The x-rated lamp acts as the sacrificial component because it is designed to fuse instantly against surge current transients, thereby protecting the P-channel MOSFET. The P-channel MOSFET of the assembly maintains the voltage clamping function when the x-rated lamp is consumed. Its capable of limiting the surge current up to a maximum rated current of 1.2 A to protect sensitive electronics from damage.

Design

The SMC5K13AHM3/H assembly consists of two components such as an x-rated filament lamp and a P-channel MOSFET. The x-rated filament lamp is fused against transient surges up to a maximum of 1.2 A in order to protect the following MOSFET. The P-Channel MOSFET maintains the current to a safe level while the x-rated lamp is consumed by the surge. The assembly also includes four extended mounting tabs and Tin-plated contacts.

Features and Benefits

The SMC5K13AHM3/H is designed to provide electro-static discharge protection, and it is able to handle surge currents up to a maximum rated current of 1.2 A. Its extended mounting tabs give it flexibility for a wide range of applications, and the Tin-plated contacts provide improved conductivity and reliability. The SMC5K13AHM3/H also ensures a simple and secure connection.

Applications

The SMC5K13AHM3/H can be used in a variety of applications that require transient current protection, such as power supplies, computers, data centers, industrial control systems, automotive electronics, test and measurement equipment, and many others. The TVS diode is also well-suited for protected connections from the utility to the electronics equipment and for in-equipment power port protection.

Working Principle

The SMC5K13AHM3/H assembly is configured as a unidirectional circuit element that limits the voltage when the associated surge peak exceeds a pre-defined threshold. Upon the occurrence of a transient event, the x-rated lamp will fuse, limiting the burst current and protecting the following P-channel MOSFET. The P-channel MOSFET then assumes the voltage clamping function until the surge current is reduced. This diode has a clamping voltage that decreases with an increase in the surge current level. The SMC5K13AHM3/H will protect sensitive electronics from damage due to surges and transients, up to its maximum rated current of 1.2 A.

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