1SMB12CAT3 Circuit Protection

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TVS-Diodes

A Transient Voltage Suppressor (TVS) diode is a semiconductor device that conforms to the transient voltage surge in order to protect the circuit from the over-voltage that may damage its components. It also performs the task of rectifying currents to regulate the types of signals or impulses that passes through the circuit.

TVS diodes are typically used to suppress high voltage spikes and are most commonly used in mission critical applications such as automotive, aerospace, and telecom applications. These diodes can also be used for signal conditioning, noise filtering, and overcurrent protection.

1SMB12CAT3 application field and working principle

The 1SMB12CAT3 is a unidirectional TVS diode used to protect circuits from voltage transients and is most commonly used in automotive, aerospace, and telecom applications. This diode has a low operating capacitance of 0.0025pF and a low on-state resistance of 0.08Ω, making it ideal for high-speed applications. TVS diodes protect the circuit from high voltage transients by clamping voltage peaks to a safe, predetermined level. When the voltage transient exceeds a certain level, the diode will “turn on” and clamp the voltage to its breakdown level.

Once the transient has passed, the diode quickly recovers when the voltage returns to a normal level, returning the circuit to its normal operating state. The 1SMB12CAT3 also provides filtering of high frequency noise and overcurrent protection from short circuits, making it ideal for high-speed applications.

Conclusion

TVS-diodes are semiconductor devices used to protect circuits from voltage transients. The 1SMB12CAT3 is a unidirectional TVS diode that is most commonly used in mission critical applications such as automotive, aerospace, and telecom applications. This diode has a low operating capacitance and low on-state resistance, making it ideal for high-speed applications. It can protect the circuit from over-voltage, filter high frequency noise, and provide over-current protection.

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