MXSMBJ45AE3 Circuit Protection

TVS - Diodes

The MXSMBJ45AE3 is a transient voltage suppressor diode, often referred to as a TVS diode. It is typically used to protect sensitive electronic components from voltage spikes, such as those that can occur due to Electro Static Discharge (ESD), lightning or power surges. It is used to protect both AC and DC circuits against transient voltage spikes.

Application Field

The MXSMBJ45AE3 is used to protect a wide range of electronic components in various electronic systems. It has been used in industrial, consumer, communications, computer and medical applications to ensure the performance and reliability of sensitive electronic components. It is most often used in systems that require transient overvoltage protection; such as computer systems, data communication systems, auxiliary power supplies, power conditioning systems, gaming consoles, and IoT devices.

Working Principle

The MXSMBJ45AE3 TVS diode works by clamping the voltage across the diode to a safe level. This is done by quickly conducting a high inrush current whenever the voltage across the diode exceeds a certain threshold, usually attributed as the clamping voltage. The diode can therefore protect the components downstream of it from the voltage spikes.

The MXSMBJ45AE3 has a maximum peak pulse power rating of 450 watts and a maximum standoff voltage of 600 volts. This makes it suitable for protecting against voltage spikes occurring across the entire range of AC and DC voltages. In addition, it has a very low leakage current rating of 1 nanoampere (nA) at 600 volts, which makes it ideal for applications requiring low leakage and where low power dissipation is required.

The MXSMBJ45AE3 is also highly reliable and has an excellent thermal response, making it suitable for a wide range of applications. This TVS diode is typically placed in series with the protected device or in parallel across both supply lines, allowing it to dissipate the energy from voltage spikes.

Conclusion

The MXSMBJ45AE3 is a versatile TVS diode that can be used to protect a wide range of devices from voltage spikes across virtually any AC and DC voltage range. It is highly reliable and has excellent thermal response, making it suitable for a variety of applications and is capable of dissipating large amounts of energy quickly.