P4KE18-E3/54

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TVS diodes are essential components for protecting sensitive electronic circuits from voltage transients that can occur when an electrical device, such as an appliance or a light bulb, is suddenly switched on or off. The P4KE18-E3/54 is a unidirectional Transient Voltage Suppressor (TVS) diode that is designed to protect against ESD and surge transients. The device provides superior clamping performance and surge capability while maintaining low standby power.

The P4KE18-E3/54\'s primary application is in the field of protecting sensitive electronic circuits from electrostatic discharge (ESD) and other transient voltages. The device functions by clamping the voltage on its output terminal to a specific voltage level when overloaded. Because of its low power consumption, small size, and unidirectional and bidirectional constructions, the P4KE18-E3/54 is a suitable choice for automotive and industrial applications.

The P4KE18-E3/54\'s bidirectional construction protects both against ESD from the positive and negative nodes while its unidirectional construction protects against overvoltage events. In addition, its low capacitance and low leakage current make it suitable for high speed and digital applications. The P4KE18-E3/54 is also available in SMT (Surface Mount Technology) packages, allowing for low-cost and low-profile design.

The P4KE18-E3/54\'s working principle is fairly straightforward. When an overvoltage event occurs, the diode\'s low stand-by power enables it to quickly respond to the event. The diode\'s breakdown voltage is specified at 18V and its maximum working temperature is 85°C. When the voltage exceeds the breakdown voltage, the diode will conduct current, which in turn causes the voltage to be clamped at this breakdown level.

The P4KE18-E3/54\'s maximum pulse current is rated at 8A (8/20µs) and its peak pulse power can be as high as 800W. The TVS diode can also be used to protect against electrostatic discharges up to 3000V (human body model). The device also offers excellent thermal stability, with a clamping temperature coefficient of -2mV/°C.

In summary, the P4KE18-E3/54 is a unidirectional TVS diode that is used to protect electronic circuits from transient voltage surges, electrostatic discharges, and other overvoltage events. Its low standby power, small size, and bidirectional or unidirectional constructions make it an ideal choice for many different types of applications. It provides superior clamping performance and surge capability while remaining low-cost and low-profile.

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