SMA5J7.5-E3/61

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TVS - Diodes: The SMA5J7.5-E3/61 is an electronic device used to protect against over-voltage surges in electronic circuits. It is a type of TVS - diode designed to absorb transient voltages beyond stated operating parameters and prevent damage to electronic components.

Application Field: SMA5J7.5-E3/61 is used primarily in telecommunication applications, automotive on-board electronics, and as a protection component for many consumer devices and industrial applications. It can be used in various telecommunication circuits such as PABX, switch receivers, voice modems, and direct broadcast services. It can also be found in electric products such as air conditioners, laptop power supplies, computers, and mobile phones. In automotive, it is used in automotive electronics such as airbag systems, safety systems, power windows, and immobilizers.SMA5J7.5-E3/61 is designed for use in medium-speed electronic systems and offers high performance in a wide range of operating temperatures. Its small physical size makes it an ideal choice for applications where space is limited. It is certified according to the requirements of the European safety standards EN 61000-4-5.

Working Principle: SMA5J7.5-E3/61 is a voltage-protecting device based on the avalanche breakdown mechanism. It is constructed with a Zener diode and a metallic layer between the cathode and anode to form a PN junction. This junction is sensitive to excessive voltages, causing a large current to flow during an over-voltage event. This current is diverted away from the protected circuit.When the voltage across the diode rises above the avalanche breakdown voltage, a voltage breakdown occurs with electrons knocked off of the covalent structure. An activation layer is thus created that allows for a strong electric field within the diode, which in turn allows for an avalanche breakdown. The avalanche breakdown causes electrons to be accelerated towards the anode, thus allowing large current flow.

When the voltage across the diode drops, the electric field weakens and the current ceases to flow. The device is then returned to its original state. This reversible phenomenon is the reason why TVS - diodes are so effective at protecting high-speed electronic systems.

SMA5J7.5-E3/61 is an ideal and cost-effective way to protect against transient voltages and reduce system risk. Its small size allows for easy installation and its high performance makes it an ideal choice for many applications.

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