SP3422-04UTG Circuit Protection

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TVS diodes, also known as transient voltage suppressors, are electrostatic devices used to significantly reduce the damaging effects of transient voltages when applied to sensitive electronic components. SP3422-04UTG is a TVS diode from the Littelfuse family of components, designed for Automotive applications. The SP3422-04UTG is uniquely suited for the protection of automotive electrical and electronic systems from excessive voltage and current transients caused by load dump, inductive switching, and other electrical events.

A TVS diode consists of two basic components: a diode and a Zener diode. The diode is a semiconductor device that allows current to flow in only one direction, while the Zener diode works to regulate the voltage, allowing only predetermined voltage levels to pass through. The SP3422-04UTG combines these two elements to combine the best of both worlds, providing the high current handling capability of the diode with the precise clamping of the Zener element.

The SP3422-04UTG was specifically designed to protect automotive electronics from electrical events and transients, such as load dump, inductive switching, short circuits, and reverse battery. The device can be used in a wide range of applications, from engine control modules and sensor circuits to navigation systems and body control modules. It can also be used to protect audio systems from interference caused by power glitches or transients.

The SP3422-04UTG is an unidirectional TVS diode with a maximum standoff voltage of 24V and a maximum clamping voltage of 27.6V. It is capable of handling up to 42A of ESD and up to 35A of EFT, making it an ideal choice for automotive applications. The device also offers low Vrwm and low leakage current, as well as superior thermal and electrical stability. Additionally, the device is RoHS compliant and meets the requirements of AEC-Q101.

When the SP3422-04UTG transient voltage suppressor is used in an automotive application, it acts as a safeguard against damaging signals from inductive switching. The device will clamp the transient voltage to a predetermined level, protecting the sensitive electronics downstream from the event. Additionally, the device will absorb the energy from the transient, dissipating it through the diode and Zener elements.

Overall, the Littelfuse SP3422-04UTG is an ideal choice for automotive applications where protection from transient voltage is required. The device combines diode and Zener element in one simple package, providing superior current handling capability and precise clamping of the voltage. The device is RoHS compliant and meets the requirements of AEC-Q101, offering reliable protection for a wide range of automotive applications.

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