SM5S15A-E3/2D

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Transient Voltage Suppressing (TVS) Diodes, also known as TVS diodes, are devices used for protecting electronic systems from undesired electrical transients. The SM5S15A-E3/2D is one such device, and is used mainly in the automotive industry. It’s a two-line bidirectional 15V device designed to offer low clamping voltage and high surge capability.

SM5S15A-E3/2D Application Field and Working Principle

The primary application for this product is automotive in-vehicle electronics systems such as powertrain and infotainment systems. The device is used in these systems to safeguard against power spikes and other electrical transients. It can also serve as an ESD protector for very high speed switching applications, such as those used in communications systems. In addition, it can be used in computer peripherals and audio/video equipment.

The SM5S15A-E3/2D is a bidirectional 15V TVS diode. It’s capable of suppressing transients up to 5.5kV from both positive and negative directions. It provides over-voltage protection from transients by quickly clamping the voltage to a safe level. This makes the device suitable for heavy-duty automotive applications, such as powertrain and infotainment systems.

The TVS diode works by effectively shunting current away from the protected device. When the voltage rises above its rated clamping voltage, the TVS diode conducts current through its terminals. This reduces the current flowing through the protected device, thus preventing over-voltage damage. The device is designed such that it can handle multiple transient events without sustaining any damage.

The SM5S15A-E3/2D has a low clamping voltage of 7.1V and a low leakage current of 2µA (max). This ensures optimal protection of expensive automotive components. In addition, it has excellent surge capability, with peak pulse current ratings of 2400A (10/1000µs). This means the device can handle high-energy transients, such as those that occur in automotive applications.

The device also has very good thermal stability and a long operating life. The temperature coefficient is 0.0017/°C, which means it can handle high temperatures without affecting the performance. The device also has a long operating life, and is expected to last up to 5 million hours.

Overall, the SM5S15A-E3/2D is an ideal device for protecting automotive electronics components from over-voltage transients. It has excellent surge capability and low clamping voltage combined with excellent temperature stability and a long operating life. This makes it an ideal device for heavy-duty automotive applications.

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