MMBZ18VALT116

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TVS - Diodes
The MMBZ18VALT116 is an alternative form of a Transient Voltage Suppressor (TVS) diode. This particular diode is a unidirectional component that is most often used for protecting sensitive electronic components from sharp voltage transients and power surges. It is a device that can effectively reduce the amplitude or energy contained in a voltage transient or power surge, thereby protecting the connected circuit from either over-voltage or electro-static discharge (ESD).The application field of MMBZ18VALT116 includes; automotive, communications, industrial, consumer electronics, aerospace, medical, military and home entertainment electronic equipment. It is used in applications where ESD and over-voltage protection are needed. It is also suitable for protecting input/output ports on PCs, Peripheral Interface Controllers, Medical Devices and other sensitive components. It is also suitable for use in systems where over-voltage protection and power supply transient protection are required.The MMBZ18VALT116 is a low capacitance device which allows more flexibility in voltage threshold selection. It is designed to strongly reduce the magnitude of the voltage spike or surge, which is the voltage level peak that an electronic device is exposed to. The device can operate with both low-level and over-voltage conditions, whilst also providing effective ESD protection.In terms of construction, the MMBZ18VALT116 is a silicon avalanche diode. This means that it is composed of doped semiconductor materials which switch the device from itsOFFtoONstate when a reverse voltage is applied. This happens when the avalanche current is higher than the diode’s holding current, forming a conducting channel across the diode. This, in turn, allows forward current to flow and protect the circuit from voltage surges.The MMBZ18VALT116 also has a limited forward voltage drop and low-level resistance. The breakdown voltage (VBR) is the reverse voltage at which the device turns on or breaks though to its conducting state. It is this breakdown voltage that determines the diode’s surge protection rating. The device also has a low forward breakdown voltage (VF), which is the minimum voltage at which the diode turns on and allows current to flow through.The working principle of the MMBZ18VALT116 is simple yet effective. It works to protect connected electronic devices from over-voltage spikes by providing a path for current to bypass the main circuit. Whenever a high surge is detected, the diode’s breakdown voltage will be met, allowing the diode to switch on and provide a conducting channel to protect the device. This helps to reduce the energy contained in the surge, thus protecting the connected circuit.In conclusion, the MMBZ18VALT116 is a low capacitance, unidirectional diode designed to provide strong over-voltage protection for a range of applications. It uses a breakdown voltage to determine when the diode should turn on and divert current away from the main circuit, thus reducing the energy contained in the surge. The device is commonly used in automotive, communications, industrial, consumer electronics, aerospace, medical, military and home entertainment applications, offering effective ESD and power supply protection.

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