MXPLAD18KP12AE3 Circuit Protection

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Transient voltage suppressor (TVS) diodes protect sensitive circuits from devices that may introduce electrical transients, such as lightning strikes, power line surges, inductive switching or motor events, and electrostatic discharge (ESD). While some transients are of short duration and easily attenuated, others may last much longer, and can cause permanent damage to the circuit. The MXPLAD18KP12AE3 is a unidirectional transient voltage suppressor diode designed to protect against electrical transients. It is a robust, low-cost, general-purpose TVS diode array, capable of withstanding high levels of ESD and surge current exposure per IEC 61000-4-2 level 4.

The MXPLAD18KP12AE3 is suitable for a wide range of applications, including automotive, consumer electronics, industrial, and telecommunications equipment. It provides surge protection for data lines and power circuits, and can be used in conjunction with other discrete devices to form a complete electrical circuit protection system. The diode array is rated to withstand up to 15kV of Electrostatic Discharge (ESD) per IEC 61000-4-2 without any damage. It can also handle up to 11A of surge current per IEC 61000-4-5. Its low-clamping voltage structure provides protection of sensitive components while maintaining good circuit isolation in automotive and industrial environments.

The MXPLAD18KP12AE3 is designed to offer superior protection for sensitive circuits such as microprocessors, low voltage bus lines, and data lines. It is designed to clamp the excess voltage to a safe level, thus preventing damage to sensitive components, while maintaining good circuit isolation. The diode array is rated for a maximum breakdown voltage of 18V, with a breakdown voltage at 12V when mounted on a 50mm² copper pad. The integrated ESD protection network ensures that the diode will not damage sensitive components due to high current transients.

The working principle of the MXPLAD18KP12AE3 TVS diode is quite simple. When the input voltage exceeds the breakdown voltage, the diode will start to conduct current, allowing it to be clamped to a safe voltage level. The built-in clamping voltage network allows the diode to clamp the excessive voltage of the transients and protect delicate electronics. When the voltage falls beneath the triggering level, the diode will cease to conduct and return to its open state, allowing the circuit to operate as intended. The diode is designed to rapidly react to any potential transients, providing quick response time and reliable protection.

In summary, the MXPLAD18KP12AE3 is a robust, low-cost, general-purpose TVS diode array that provides superior protection for sensitive components. It is designed to handle up to 15kV of ESD and 11A of surge current, making it suitable for a wide range of applications. The diode is also equipped with an integrated ESD protection network, ensuring that it quickly clamps the input voltage to a safe level when needed. The diode also provides good circuit isolation, allowing the circuit to continue operating as intended when the transient is cleared.

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