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Introduction to TVS - Diodes

TVS (transient voltage surge suppressor) diodes are semiconductor devices designed to protect electronic components from electrical interference. They are used to protect sensitive components from high levels of transient voltage. In general, they are designed to reduce the impact of electrical noise on electronic circuits.

SM15T7V5CA-E3/57T

The SM15T7V5CA-E3/57T is a surface mount transient voltage surge suppressor diode designed for 12V vehicle systems and equipment. It is a low capacitance diode which provides good coupling performance in high electric fields. The diode features two reverse-biased, ultra-low inductance junctions that provide protection against voltage transients of up to 56V. The diode has a peak pulse power of up to 1500W and can withstand a surge energy of up to 90J. The clamping voltage is typically 11.4V with a typical reverse current of 1µA at 8V. The diode has a peak pulse current of up to 440A and is rated for a working temperature range of -55°C to +125°C.

Application Field and Working Principle

The SM15T7V5CA-E3/57T is mainly used in automotive and industrial applications. It can be used to provide protection from voltage surges and spikes in the 12V electrical systems used in these applications. The working principle of the device is based on the fact that it has two reversed biased, ultra-low inductance junctions which act as back-to-back clamps to limit the voltage transients to a safe level. When a high voltage is applied across the diode, the voltage is spread across the junctions, thus clamping the voltage to a safe level.

The SM15T7V5CA-E3/57T is a very useful device for providing protection against electric noise and voltage transients in a variety of automotive and industrial applications. It is a reliable and cost-effective solution for protecting sensitive components from high voltage transients.

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