SMBJ5347B-TP

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The SMBJ5347B-TP is a single zener diode designed to protect electrical circuits from destructive high voltage transients. It is a powerful transient-voltage-suppression device used to protect a wide range of devices from the damaging effects of electrostatic discharge (ESD), induced by lightning strikes and other events. The SMBJ5347B-TP is a fast-switching diode with a breakdown voltage at 5.9 volts.

Application Field

The SMBJ5347B-TP is most commonly used for ESD protection in a variety of consumer and industrial electronics applications. It is particularly applicable to consumer devices such as smartphones, tablets, digital cameras, and household electronics. It is also suitable for use in industrial applications including factory automation, home automation, and automotive.

The fast-switching capability of the SMBJ5347B-TP translates to low-noise operation and minimal interference. Its low capacitance of 0.15pF enables high-speed data communication without interference, making it suitable for the protection of fiber optic and Ethernet applications. In addition, its high peak pulse power of 1500W in 10/1000μs enables it to withstand very high surges.

Working Principle

At normal operating voltage, the SMBJ5347B-TP acts as an open circuit. The device is designed such that when the voltage on either side of its terminals rises above the breakdown voltage (V_BR) of 5.9 volts, the diode switches rapidly from an open to a closed state, conducting current. This allows for the suppression of any further rise in voltage.

The reverse recovery time for the SMBJ5347B-TP is extremely fast, allowing for fast switching and nresponse time. As soon as the voltage falls below V_BR, the device switches rapidly from its closed state to an open state and is again ready to protect the circuit. The fast-switching capability coupled with the high peak pulse power rating of the SMBJ5347B-TP make it ideal for ESD protection in consumer and industrial electronics applications.

The SMBJ5347B-TP also offers excellent moisture and temperature resistance to ensure reliable durability in a wide range of environments. It is RoHS compliant, making it safe for use in all applications. Its small surface-mounted housing makes it easy to install in densely populated circuit boards and its lead-free design makes it a preferred choice for environmental applications.

Conclusion

The SMBJ5347B-TP is an excellent choice for ESD protection in consumer and industrial electronics applications. Its fast-switching capability and high peak power rating make it well suited for the rigorous demands of these applications. Its small form factor also makes it ideal for installation in densely populated circuit boards. The device is RoHS compliant and comes with a lead-free design, making it a preferred choice for environmental applications.

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