SMA5J5.0CA-M3/5A

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TVS diodes, also called transient voltage suppressors (TVS), are widely used for protecting sensitive electronic equipment from voltage transients induced by lightning and other electrical transient phenomena. The SMA5J5.0CA-M3/5A is a TVS diode designed for popularity power and signal line protection.

The SMA5J5.0CA-M3/5A is designed to protect sensitive electronic equipment in automotive, industrial, and consumer applications. It is a low-capacitance, unidirectional TVS diode capable of protecting signals up to 1.5A and -5V. The device incorporates a Zener diode structure, which eliminates the need for separate voltage clamps. This feature allows for faster and more reliable surge protection.

The device has a maximum breakdown voltage rating of 5.0 V, with a clamping voltage of 5.6 V. It uses an epitaxial PN junction to provide protection from high voltages, and also prevents back-biasing of the J-FET structure during unclamping. The device is fast enough to protect on-chip protection diodes from large transient voltages, and is capable of handling high capacitive loads. It is also ESD rated up to ± 8kV.

When exposed to a transient voltage, the SMA5J5.0CA-M3/5A device will clamp the voltage, limiting its effects and preventing it from reaching the downstream components. This is achieved through an avalanche breakdown mechanism, which occurs when the PN junction of the device is exposed to a voltage higher than its rated breakdown voltage. When this happens, the diode will quickly start to conduct current, allowing it to absorb the energy from the incoming transient. This reduces the voltage, protecting the downstream components.

The device also incorporates a safety feature, which is a special “crowbar” clamping circuit that operates when the voltage exceeds the breakdown voltage of the diode. This feature will prevent further voltage transients from occurring downstream, protecting the device from additional damage.

The SMA5J5.0CA-M3/5A is a safe and reliable solution for protecting vulnerable components from transient voltages. It offers excellent protection from over-voltage conditions on power and signal lines, ensuring that the connected devices remain safe and operational. The device is designed for a wide range of applications, making it an ideal choice for TVS diode protection.

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