SM6T12AHE3/5B

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Transient voltage suppressors (TVS) are specialized diodes that are used to protect sensitive circuits from voltage transients produced either by lightning or power line switching. Variations of the Zener diode, they clamp voltage levels across two pins at a specific breakdown voltage level. TVS devices are known as “crowbar” devices because when the breakdown is exceeded they quickly switch from a low-resistance state to a high-resistance state, effectively “blowing a fuse.”The SM6T12AHE3/5B is a unidirectional transient voltage suppressor (TVS) that has a breakdown voltage of 12V, a 5% surge capability of 16A and a 30W peak pulse power capability. It can be used to protect a wide variety of electronic circuits from transient voltage events.The SM6T12AHE3/5B TVS offers superior transient protection, with an extremely low capacitance and low leakage current. It is offered in the industry standard SOT-23 package and meets or exceeds all relevant industry standards, such as IEC 61076-4 and UL1577.The SM6T12AHE3/5B is typically used in automotive and industrial systems as a transient voltage suppressor and surge protection device. It can be used in a wide range of applications, from automotive electronics to industrial control systems and consumer electronics. It is also suitable for solar panel protection, power-line pulse protection, and instrumentation circuits.The working principle of the SM6T12AHE3/5B begins with the principle of an avalanche diode. This is a special kind of diode that is designed to quickly switch from a low-resistance state to a high-resistance state when the maximum allowed voltage is exceeded. This action, known as “crowbarring,” effectively blows a fuse.The SM6T12AHE3/5B works by using a diode structure that is connected in series to the protected circuit. When a transient voltage surge occurs, the diode begins to increase in resistance as the voltage builds until it passes the breakdown voltage, at which point the diode rapidly switches from a low-resistance state to a high-resistance state, stopping the surge.This rapid switching of the diode creates what is known as the clamping voltage, which is the voltage at which the diode begins to conduct current. The rise and fall times of the diode in both the low-resistance and high-resistance states are extremely fast, typically less than 0.5ns.In addition to protecting sensitive circuits from transient voltage surges, the SM6T12AHE3/5B can also be used to detect transient voltage events. The diode can be used to detect voltage levels above and below predetermined thresholds, and can be used to initiate circuit protection mechanisms in response to transient voltages.The SM6T12AHE3/5B is an effective and reliable device for protection against transient voltage events. Its fast breakover characteristic and low power dissipation ratings makes it an ideal choice for many automotive and industrial applications. Its small size and low capacitance also makes it an attractive choice for use in consumer electronics applications. With its excellent rating for surge protection, the SM6T12AHE3/5B is an essential component for the protection of sensitive electronic circuits.

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