SMBJ4757A/TR13

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Diodes are an important type of electrical component that consists of two terminals. These two terminals are connected by a semiconductor material. Diodes are used to control the direction and voltage of current, providing a pathway for current to flow in one direction while blocking it in the other. One specific category of diodes are Zener diodes, which are type of break down diode that have a higher reverse voltage compared to traditional diodes.

The SMBJ4757A/TR13 is a single Zener diode that can provide protection from overvoltages and ESD (ElectroStatic Discharge). It works by clamping the voltage over a specified voltage. As the voltage exceeds the Zener voltage, current will flow in the reverse direction, limiting the voltage and current flowing through the Zener diode. This provides protection from damaging overvoltages. The SMBJ4757A/TR13 also offers robust ESD protection of up to 8kV contact discharge and 15kV air discharge.

The application field of the SMBJ4757A/TR13 is quite broad. It is commonly used to protect sensitive electronic components against surges and ESD, in a wide range of applications such as automotive, consumer electronics, industrial and telecom. It is also popular in applications such as automotive seat belt control, LCD driver protection and PCMCIA/USB protection.

The working principle of a Zener diode can be explained using the following diagram. In normal forward bias mode, the diode is nonconducting, with no voltage drop across it. When the applied voltage exceeds the Zener voltage, the diode begins to break down, allowing current to flow in the reverse direction. As the applied voltage exceeds the Zener voltage, the voltage across the diode will remain at the Zener voltage, providing the necessary protection from overvoltages. Thus, the SMBJ4757A/TR13 can be used to protect sensitive electronic components against surges and ESD.

The SMBJ4757A/TR13 is a single Zener diode that provides protection from overvoltages and ESD (ElectroStatic Discharge). It is used in a wide range of applications such as automotive, consumer electronics, industrial and telecom. The working principle of the SMBJ4757A/TR13 involves clamping the voltage over a specified voltage, allowing current to flow in the reverse direction when the voltage exceeds the Zener voltage, limiting the voltage and current flowing through the diode. This provides protection from damaging overvoltages.

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