SMBJ75A-HR

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TVS (Transient Voltage Suppressors) diodes are specialized semiconductor devices designed to protect a circuit from damage caused by sharp voltage surges. They clamp the voltage to a safe level before it reaches a sensitive electrical component and can absorb large amount of energy to do this. The SMBJ75A-HR is a surface-mount unidirectional low-capacitance transient voltage suppressor diode designed to protect sensitive electronics from high power, high-frequency transients.

This diode boasts a very low capacitance of 8pF, allowing it to be used for high-speed signals, such as USB 3.0, Thunderbolt, DisplayPort, HDMI, etc. The maximum working voltage of the device is defined as 75V, and it is suitable for reverse working voltages from 5V to 75V. The peak pulse power per device is specified as 1.5KW, and the maximum clamping current is 14A. It is capable of handling large surge currents while maintaining excellent noise margin and signal integrity.

When a surge coming in through a circuit exceeds the working voltage of the diode, it begins to conduct. This creates a low resistance path to ground, which limits the amount of voltage that is allowed to reach the sensitive component. This protects any critical parts from possible damage due to overvoltage and overcurrent. The device also absorbs much of the energy from the surge, which dissipates heat or is transferred to an external resistor.

This diode has a fast response time of just 1.3ns, making it suitable for most high-frequency applications. The device is designed to be used on printed circuit boards, and is available in a standard SMA package. It can be used on board areas where space is limited, and is RoHS compliant.

The SMBJ75A-HR has a wide range of applications, from electronics and telecommunications to embedded systems and consumer electronics. It is an ideal protector for voltage-sensitive components, such as MOSFETs, RF, and VCOs. Its low capacitance makes it suitable for USB 3.0 and other high-speed signal applications, while its high peak power per device makes it suitable for power amplifiers, HDD, and other power-sensitive circuits.

In summary, the SMBJ75A-HR is a versatile and reliable transient voltage suppressor diode, designed to protect sensitive electronics from voltage and power surges. It is flexible enough to be used in a wide range of applications from consumer to industrial, with excellent surge suppression and signal integrity.

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