SMBJ75CA-HR

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TVS - Diodes

SMBJ75CA-HR is what is known as a transient voltage suppressor (TVS) diode, which is a specialized type of diode that is designed to protect circuits against transient (i.e. sudden and short, typically a few microseconds) voltage spikes.

The SMBJ75CA-HR diode is designed to absorb surges up to 75V DC and is rated for 1.5kA peak pulse current. Its peak power dissipation is 900W and it has a breakdown voltage of 75V operated at 1A DC. It has a low leakage current of 0.1 μA (max).

TVS diodes are used to protect circuits from overvoltage conditions, such as those caused by lightning, electrostatic discharge (ESD), or sudden power fluctuations. They are commonly used to protect sensitive electronic systems from damage due to electrical transients in automotive, industrial, and medical applications.

Working Principle of SMBJ75CA-HR Diode

SMBJ75CA-HR is a unidirectional type of TVS diode. When the circuit voltage exceeds its breakdown voltage, the diode will conduct current, creating a path to ground and thus clamping the voltage to its breakdown voltage. The diode\'s low turn-on voltage and fast turn-on speed allow it to suppress voltage transients as short as a few nanoseconds.

When the transient voltage is lower than the diode\'s breakdown voltage, the diode remains off and thus does not affect the normal signal operation. This makes the diode suitable for use in applications that have giant pulses that require protection from overvoltage transients.

Applications of SMBJ75CA-HR Diode

SMBJ75CA-HR diodes are mainly used for protection in automotive, industrial, and medical applications. They can be used for ESD, lightning, overvoltage, and telecommunications protection, among other applications. They are particularly suitable for computer, telecom, and automotive electrostatic discharge (ESD) protection, as well as for automotive power line surge protection.

Due to its low turn-on voltage and fast turn-on speed, the SMBJ75CA-HR diode is well-suited for application in ESD and overvoltage protection. It can also be used in solar and automotive power surge and transient voltage protection.

Conclusion

In conclusion, the SMBJ75CA-HR diode is a unidirectional type of TVS diode that is designed to suppress voltage transients as short as a few nanoseconds. It is mainly used for protection in automotive, industrial, and medical applications. The diode has a break-down voltage of 75V operated at 1A DC, and can absorb surges as high as 75V DC.

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