SMBJ20CD-M3/H

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TVS diodes are a type of semiconductor device used primarily in the protection of electronic circuits. They are commonly used to protect circuits from overvoltage caused by transients such as electrostatic discharges, lightning strikes, and high-frequency signals. The SMBJ20CD-M3/H is a Uni-directional, Bi-directional, and Unidirectional TVS diode specifically designed to provide protection for sensitive electronic circuits.

The SMBJ20CD-M3/H is widely used in various fields due to its reliable protection ability, fast response time, and cost-effectiveness. The device can be used in a wide range of applications such as telecommunication, automotive, industrial, medical, and consumer electronic systems. It is also suitable for the protection of high frequency signals such as Ethernet and USB.

This type of TVS diode is an In-line (ever-ready) device. This means that the diode is always ready to protect the circuit. The heart of the protection provided by the SMBJ20CD-M3/H is its low voltage breakdown. This breakdown voltage and the associated peak pulse current rating of the diode determines its capability to suppress transients.

Another interesting feature of this device is its soft-breakover operation. This means that when a transient voltage appears, it will remain between a certain range before it breaks over and conducts current. This soft-breakover operation also serves to protect the circuit by preventing the voltage from going more than 90% higher than its breakdown voltage.

The working principle of the SMBJ20CD-M3/H is quite simple. When a surge of current is detected by the diode, an arc of electricity is created to pass the current around the diode to provide protection. This also serves to limit the current through the circuit, reducing the heat generated and protecting the components.

The SMBJ20CD-M3/H offers many advantages over other types of TVS diodes, such as its uni-directional protection. Unlike bi-directional TVS diodes, the SMBJ20CD-M3/H only requires one lead to be connected to the circuit, making the installation process simpler and reducing costs. Additionally, the surge current rating of the device is higher, meaning it can withstand larger currents without damage.

The SMBJ20CD-M3/H is an excellent choice for the protection of sensitive electronics. It is cost-effective, reliable, and can withstand a wide variety of transients. The soft-breakover operation ensures that the voltage remains below the breakdown voltage, preventing damage to the circuit components. The uni-directional protection of the diode also simplifies installation.

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