SML4743-E3/5A

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The SML4743-E3/5A is a Single Zener diode from the SML47xx-E3 series, manufactured by Panasonic. It is a low-voltage, low-power Zener diode, with an operating voltage of 3.3 volts and a minimum Zener voltage of 5.1 volts. It features a low forward voltage drop of 0.15 volts at 25°c, making it ideal for use in battery-powered devices. The diode is also highly reliable and resistant to temperature variations, making it suitable for use in a wide range of applications.

The SML4743-E3/5A is widely used in the electronics industry, especially in the automotive, telecom and consumer electronics sectors, due to its superior characteristics. It is commonly used to provide a voltage reference in circuits, or as a regulator or protection device to protect sensitive components from voltage spikes. It is also used in circuits to prevent the flow of large currents or to provide a bias to other semiconductor components.

When used as a voltage protection device, the SML4743-E3/5A acts as a breakdown diode, allowing only a predetermined amount of electrical current to flow when exposed to a certain voltage. This enables the diode to protect the more sensitive components from damage due to overvoltage. The diode also features low capacitance and a low inductance which makes it ideal for use in high-frequency applications, such as radio-frequency filtering.

The working principle of the SML4743-E3/5A is based on the Zener effect. The Zener effect, discovered by physicist Clarence Zener, occurs when a reverse voltage is applied to a diode, causing a breakdown of the depletion region and allowing current to flow in the reverse direction. The diode\'s reverse breakdown voltage is determined by its Zener voltage, which is the voltage at which the diode begins to conduct a reverse current.

The SML4743-E3/5A is designed to provide a low Zener voltage, which allows it to be used in a variety of applications, such as voltage regulation, overvoltage protection, radio-frequency filtering, and voltage reference. It is also suitable for use in a wide range of climates and temperatures, from -25°C to +85°C.

In summary, the SML4743-E3/5A is a single Zener diode from the SML47xx-E3 series, featuring low forward voltage drop, high reliability, and superior temperature characteristics. It works on the principle of the Zener effect and is used for a variety of applications, such as voltage regulation, overvoltage protection, radio-frequency filtering and voltage reference. Its low Zener voltage and wide operating temperature range make it ideal for use in consumer electronics, automotive and telecom applications.

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