MAP5KE85CA

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Transient voltage suppressors (TVS) are components whose purpose is to protect circuits from overvoltage situations, such as that arising due to lightning strike or power surge. They come in two types: bi-directional, which protect against both positive and negative surges, and unidirectional, which protect against positive surges only. The MAP5KE85CA is a unidirectional TVS diode.

The MAP5KE85CA is a unidirectional TVS diode with a 5.8V zener voltage. It is constructed from a silicon wafer and can withstand voltages up to 85V and currents up to 5 amperes. It is designed to protect sensitive electronics from overvoltage situations, such as lightning strikes, which can cause significant current transients.

The MAP5KE85CA has a low clamping voltage of 4.2V, which means that it can be used to protect low voltage components from overvoltage. The diode has a high surge current rating of 8A, meaning it can handle large surges without any damage. The MAP5KE85CA is also very small, measuring just 0.53mm x 0.55mm, which allows it to be mounted onto small PCBs.

The MAP5KE85CA can be used in a variety of applications, ranging from power supplies and data lines, to communications equipment and consumer electronics such as cell phones and tablets. It is a popular choice for protecting low voltage components from overvoltage surges.

The working principle of the MAP5KE85CA is simple and relies upon the zener diode’s ability to conduct current in the reverse direction when a voltage higher than the zener voltage is applied. When overvoltage occurs, the diode conducts current in the reverse direction, creating a circuit for the current to be drawn away from the protected component. The MAP5KE85CA then clamps the voltage to below the rated zener voltage, thus protecting the component from overvoltage and preventing damage or destruction.

In conclusion, the MAP5KE85CA is a unidirectional TVS diode designed to protect low voltage components from overvoltage situations. It has a low clamping voltage of 4.2V and a high surge current rating of 8A, meaning it can withstand large surges without any damage. The diode can be used in a variety of applications, ranging from power supplies to consumer electronics, and relies upon the zener diode’s ability to conduct current in the reverse direction when a voltage higher than the zener voltage is applied.

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