MXP4KE400AE3 Circuit Protection

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TVS-diodes are designed to protect electronic components from damage caused by electrostatic discharge, lightning strikes, and other electrical over stress events that may be encountered under normal operation or during servicing. The MXP4KE400AE3 from the Microsemi Corporation is a particularly rugged Transient Voltage Suppression Diode that offers comprehensive transient protection for a wide range of applications from sensitive microprocessor and microcontroller devices to power supplies, interface circuits, and other sensitive electronic components.

The MXP4KE400AE3 is designed specifically to protect sensitive components from transient voltage surges from ± 15kV HBM (Human Body Model) to 30A ESD (Electrostatic Discharge). This is accomplished through a combination of silicon avalanche breakdown technology, low capacitance, low voltage, and fast response times. This combination provides the optimal protection for a wide range of applications from ultra-low power digital circuits to high current systems.

The MXP4KE400AE3 has a working voltage of -3 to +30V and a clamping voltage of -50V to +30V. This wide working range makes it suitable for use with many types of electronic systems, including wireless communications and peripherals. The MXP4KE400AE3 also features an integrated active surge suppression circuit, allowing it to operate effectively at higher frequency and voltage levels than traditional TVS diodes. Moreover, it offers a low junction capacitance of only 1pF, which makes it ideal for high-speed applications.

The MXP4KE400AE3 also provides a low operating temperature range from -25°C to +85°C. This allows it to be used in systems that may experience extreme temperatures, without compromising its performance. In addition to ESD protection, the MXP4KE400AE3 also offers surge protection from as low as 15kV of HBM to 30A (2/10µs pulses). This is further enhanced by its low on-state resistance and low stand-off voltage.

The working principle of the MXP4KE400AE3 is based on the Zener breakdown diode, which allows it to respond rapidly to an incoming surge or transient voltage. This is accomplished by the breakdown of the P+ region within the diode, which causes a rapid voltage increase across the junction. The increase in voltage raises the diode\'s current conduction capability, allowing it to absorb the surge and protect the connected device. The P+ breakdown also reduces the forward voltage drop of the diode, allowing it to operate at a higher breakdown voltage for improved protection.

MXP4KE400AE3\'s application field includes a wide range of consumer and industrial electronic products, such as laptop and mobile phone motherboards, peripheral/data cards, routers, solar panels, LED displays, high-efficiency power supplies, and other high-voltage applications. The device is ideal for protecting sensitive components in these applications from electrostatic discharge, voltage surge, and other transient conditions. In addition, the device enhances the performance of existing ESD protection systems, and its low capacitance make it ideal for high-speed applications.

In summary, the MXP4KE400AE3 by the Microsemi Corporation is an ideal choice for transient voltage suppression. It offers comprehensive protection from a wide range of transients, including electrostatic discharge, voltage surge, and other transient conditions. With its low capacitance, low voltage, fast response times, and a wide operating temperature range, the MXP4KE400AE3 is perfect for protecting sensitive electronic components in a variety of applications.

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