SMCJ350CE3/TR13

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SMCJ350CE3/TR13 Application Field and Working Principle

SMCJ350CE3/TR13 is one of the most commonly used Transient Voltage Suppressor (TVS) diodes. It is widely used for its exceptional characteristics for signal and transient voltage protection. As a comparison to the traditional zener diodes, TVS diodes can offer a much higher level of protection against current surges, mainly thanks to its rapid response time. This article provides an overview of the application fields and the working principle of SMCJ350CE3/TR13.

Application Field

SMCJ350CE3/TR13 TVS diodes are used in the protection of signal lines on a variety of applications including next-generation automobiles, consumer electronics, and communication systems. The significant load current capability of SMCJ350CE3/TR13 makes it highly suitable for these applications. It also features a flat and low capacitance clamping bias voltage across the supply and ground lines that helps with the reliability and stability of the system.

This TVS Diode is also suitable for protecting data lines, like Ethernet cables and USB ports, against electrostatic discharge (ESD) and other surges. The ESD protection on two different lines can be facilitated through connecting two SMCJ350CE3/TR13 in series. This configuration will provide dual protection without any risk of damage due to current spikes.

Working Principle

SMCJ350CE3/TR13 belongs to the unidirectional, or symmetrical bidirectional TVS diodes. It operates with a simple principle that involves a PN junction with a reverse breakdown voltage. The reverse breakdown voltage is the voltage at which the current in the PN junction starts to increase exponentially. This increase in the current is caused by the depletion of the minority carriers in the PN junction.

As the reverse breakdown voltage is exceeded, the PN junction acts like a low-resistance path and starts conducting. This biasing of the PN junction is in the same direction as the applied voltage, allowing current to flow through the PN junction in a single direction. This allows the TVS to dissipate a substantial amount of the surge current.

This device comes with high transit voltage characteristics, which helps to block any damaging voltage. SMCJ350CE3/TR13 also comes with clamping voltage levels that protect the equipment from any transient over-voltage.

Conclusion

SMCJ350CE3/TR13 is a type of TVS diode that is used for signal and transient voltage protection applications. It is suitable for a wide range of applications including next-generation automobiles, consumer electronics, and communication systems. The reverse breakdown and clamping voltage of the device helps to protect the connected equipment from any surge current or over-voltage. With its high load current capability and exceptional transit voltage characteristics, SMCJ350CE3/TR13 is an excellent option for transient voltage suppression.

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