SMBJ45A R5G

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The SMBJ45A is a unidirectional, hermetically sealed, silicon transistor avalanche diode designed to protect voltage sensitive components from transient voltage surges. It is a member of the TVS (Transient Voltage Suppressor) diode family, and is designed to safely clamp transient voltages and absorb high-energy transients to protect sensitive electronic components. The SMBJ45A is available in a variety of package styles and voltage ratings, so it can be used in a wide range of applications, from telecom to industrial.

The SMBJ45A is designed to withstand repetitive surges of up to 5A peak current. It can also withstand energy of over 20 Watts for high peak current transients. The R5G device features an extremely low stand-off voltage of 5V with a breakdown voltage of 5.8 volts, making it ideal for protecting sensitive components from lower transient voltages.

The construction of the SMBJ45A consists of two back-to-back dielectrically isolated junction-action components. The components act together to provide superior protection from electrostatic discharges (ESDs) and other overvoltage events. In the case of an ESD, the device is able to absorb the charge and quickly dissipate it to a safe voltage level. This prevents damage to the components it is protecting.

In normal operation, the SMBJ45A acts as a high impedance diode and allows only low current leakage. This prevents the device from dissipating power when no overvoltage events occur. As soon as a surge event occurs, the device becomes conductive and diverts the surge current away from the sensitive component and into an appropriate load, preventing damage to the device.

Due to its small size and high performance capabilities, the SMBJ45A is ideal for use in many applications, such as portable electronics, consumer electronics, power supplies, automotive applications and telecom systems. It is also used to provide lightning protection for outdoor telecommunication systems and devices. Additionally, it can be used to protect telecom equipment from ESDs and power disturbances.

In conclusion, the SMBJ45A is a member of the TVS diode family and is designed to provide protection against transient overvoltage surges. It features an extremely low stand-off voltage and is capable of repeated surge currents of up to 5A peak. The device is highly versatile and can be used for a wide range of applications, including consumer electronics, telecom systems and power supplies. It is also able to provide superior protection from ESDs.

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