MXP4KE36A Circuit Protection

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MXP4KE36A is a form of the Television Semiconductor – Diode (TVS-Diode) from the world\'s largest supplier of semiconductor components and thermal management products, STMicroelectronics. The MXP4KE36A is a bidirectional Transient Voltage Suppressor (TVS) which was developed to protect system level components from overvoltage transients (ESD) and surges caused by lightning, power induction and other events. This form of diode is designed to reduce peak voltage in pulses, while allowing normal system operation to function uninterrupted.

The MXP4KE36A integrates a low-impedance Transient Voltage Suppressor (TVS) with a series inductance and a reverse conducting diode into a single package. The series inductance and reverse conducting diode limit the current during pulse clamping to protect sensitive semiconductor devices. The TVS clamps the transient voltage and absorbs excessive energy, enabling it to protect against damaging transients. The low clamping voltage and low capacitance derived from the series inductance provide system level over-voltage protection up to 36V for IEC61000-4-2 (ESD) events or IEC61000-4-5 (surge) Lightning protection.

The MXP4KE36A is available in either a 4-lead SOT-143-5 or an 8-lead DFN-10 (2x2mm) package, allowing for efficient board layout and excellent assembly compatibility. Its extreme compact size reduces the area occupied on a board compared to conventional package solutions, thereby reducing the overall material cost associated with mounting. In addition, the MXP4KE36A TVS is RoHS compliant and UL approved.

The MXP4KE36A device is typically used in TV sets, set-top-boxes, computers, mobile phones, PDAs and other consumer electronics. It is well suited for TV interface applications, as it can protect against the overvoltage transients associated with HDMI, DVI, VGA, RGB and other digital video signals. The low capacitance and ESR of the diode make it suitable for inputs with high di/dt rate. It is also well suited for protection of radios, headsets and other audio systems.

The MXP4KE36A operates via avalanche breakdown, a process where exceeding a certain voltage causes the breakdown of a larger area of an insulating medium. When used as a TVS-Diode, the MXP4KE36A clamp voltage is specified to be between 18V-36V, providing effective protection against overvoltage transients. Furthermore, the maximum peak pulse current rating is specified at 16.5A for a 10/1,000 second pulse waveform.

The MXP4KE36A has additional features to ensure a safe and reliable system. With a breakdown voltage of 6.2V and a drain-source Leakage Current of 3mA at 25°C, the diode will protect against static and dynamic voltage spikes. The diode is also designed to remain stable under repeated and extreme temperature cycling between -65°C and +150°C; this is an important feature as it ensures the reliability and safety of the diode, even over extended periods of time.

In conclusion, the MXP4KE36A is a reliable and cost-effective means of providing reliable overvoltage protection for electronic equipment, allowing for safe and uninterrupted system operation. With its combination of low capacitance and reliable avalanche breakdown regime, the MXP4KE36A is a robust and reliable solution for a wide range of applications.

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