SM15T68A Circuit Protection

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TVS - Diodes are a type of discrete semiconductor that play an important role in protecting electrical circuits from voltage transient and surges. The SM15T68A diode is an example of such a device. This device offers superior transient protection characteristics, including a low and fast response to transient conditions. In addition, it has a low forward voltage drop, low leakage current, and a high operating temperature range.

The SM15T68A belongs to the Automotive TVS Series, which is suitable for automotive applications, such as in ECUs, Body Control Modules, Sensors, etc. This device can protect from fast transients induced by inductive switching, such as in relays, and from Electrical Fast Transients (EFTs) caused by lightning or power surges. It also has an integrated reverse breakdown/clamping voltage of 15 V, which ensures reliable protection from over-voltage.

The SM15T68A works passively by quickly clamping the voltage, either above or below the forward reference voltage, whenever an instantaneous, large voltage is applied to the part. It is designed to protect sensitive circuits from voltage transients caused by load switching, EFTs, lightning, and power surges. Its low-capacitance design allows it to respond quickly to transient events, and its reverse breakdown voltage ensures reliable protection.

To ensure optimal performance, it’s important to take into account several factors when selecting the right TVS - Diodes, such as the operating temperature, the clamping/breakdown voltage, and the reverse leakage current. It is also important to consider the response time of the diode—a fast response time will help ensure the protection of the device from fast transient overload and underload events.

In summary, the SM15T68A TVS - Diode offers superior transient protection characteristics, a low forward voltage drop, and low leakage current across its operating temperature range. It is suitable for use in automotive applications such as ECUs, Body Control Modules, and Sensors, and its fast response time helps ensure reliable protection from fast transient overload and underload events.

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