SMBJ400ATR

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Transient Voltage Suppressor (TVS) diodes are used in many different applications to protect sensitive components from overvoltage transients and associated damages. They are designed to provide a shunt path to ground in order to dissipate the transient energy. TVS diodes come in a wide range of voltage ratings and capacitance values, and they come in various popular packages such as SMB, DO-15, DO-41, and SMC. The SMBJ400ATR is one of the most popular transient voltage suppressor diode for transient voltage suppression applications.

The SMBJ400ATR is designed to provide protection against a wide range of transient voltages. It has a breakdown voltage of 400V with a peak pulse power rating of 600W. It also has a capacitance of 6.5pF at 400V, which makes it suitable for use in high speed switching applications. The SMBJ400ATR is designed with an internal avalanche breakdown diode which protects it from excessive voltage transients.

The SMBJ400ATR is commonly used in power line transient suppression, power conditioning, and overvoltage surge protection applications. It can be used to protect sensitive electronics such as microprocessors, logic circuits, radio frequency circuitry, and other high speed electronic components from high voltage transients. It is also suitable for use in automotive and automotive-related applications.

The working principle of the SMBJ400ATR is based on the electric field breakdown of its PN junction. When a transient voltage of 400V is applied across the SMBJ400ATR, the electric field generated in the PN junction starts to breakdown, allowing current to flow across it. This current flow dissipates the transient energy by causing a drop in voltage. The transient voltage is clamped down to the breakdown voltage of the device, thereby providing protection from overvoltage transients.

Another advantage of the SMBJ400ATR is its fast-switching capabilities. Its fast-switching capabilities reduce the time that the transient voltage is present in the circuit, thus reducing the potential for damage. It is also capable of withstanding a high surge current for a short duration, thus providing an additional measure of protection against transient voltage spikes.

In conclusion, the SMBJ400ATR is a popular choice for protecting sensitive electronic components from transient voltage overshoots and surges. Its ability to clamp down the transient voltage to its breakdown voltage, combined with its fast-switching capabilities and its ability to withstand high surge current, makes it the ideal solution for transient voltage suppression applications.

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