MXL1.5KE150AE3 Circuit Protection

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Transient Voltage Suppression (TVS) diodes are a type of unidirectional protective device that helps prevent damage from transient surges. The most common types include Thyristor Surge Protection Devices (TSPDs), Metal Oxide Varisters (MOVs) and Zener Diodes, which are mainly used to protect against the damaging effects of over-voltage and unexpected power surges. The MXL1.5KE150AE3 is a TVS diode from STMicroelectronics, designed mainly for transient voltage suppression applications in the automotive industry. The device offers an increased level of protection due to its higher reliability and surge capacity.

The MXL1.5KE150AE3 is a 2-terminal unidirectional low-capacitance transient voltage suppression device. It is designed to provide ESD and surge protection for high-speed data lines with edge rates of up to 2.5ns. It is also used in applications where simultaneous or consecutive lightning strikes could exceed the power line\'s nominal voltage. The device\'s low capacitance allows it to have a fast switching response time when a surge is detected, thus reducing the risk of circuit damage.

MXL1.5KE150AE3\'s application field is mainly limited to the automotive industry. The device is used for high-speed data lines with operating voltage up to 18V. It can be used for protection from Electrostatic Discharge (ESD) and surges for Automotive Diagnostic Bus (CAN,I2C, etc.), keyless entry/immobilizer systems, airbag systems, infotainment and navigation systems, and engine control systems.

The working principle of MXL1.5KE150AE3 is to provide surge and ESD protection. When there is an over-voltage or transceint event, the device quickly conducts the current from the source to the output. When the voltage level of the source drops below the maximum operating voltage, the current is reversed, allowing the device to go back to its idle state. This ensures that the protected circuit is back to its normal state with no damages from the transient event.

The MXL1.5KE150AE3 has a low snap back leakage current of less than 0.5mA. This allows the device to stay in its eversed blocking state for a longer period of time, thereby providing increased protection from transients and surges. The device is also resistant against thermal shock, solder senility and vibration, and it is RoHS compliant for environmental safety.

In conclusion, the MXL1.5KE150AE3 is a good choice for transient voltage suppression applications in the automotive industry. It offers a high level of protection against transient surges and ESD events, and its low snap back leakage current ensures that it stays in its reversed blocking state for a longer period of time. Additionally, the device is able to withstand thermal shock, solder senility and vibration, and is RoHS compliant.

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