1N4973 Discrete Semiconductor Products

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Diodes are two-terminal electronic components, which allow the flow of current in one direction. Zener diodes are a type of diode that is designed to operate in reverse-bias mode, with a constant voltage drop across their terminals. The 1N4973 is a Zener diode, commonly used as a voltage regulator.

Application field

The 1N4973 is a 3.0 V, 500 mW Zener diode with a maximum operating current of 250 mA and a maximum reverse leak of 500 nA. It is most commonly used in voltage regulator applications and is ideal for design engineers who need a reliable and cost-effective solution for their application. The 1N4973 is used in automotive and industrial applications, as well as in many consumer electronics devices such as laptops and digital cameras.

Working Principle

The 1N4973 works on the principle of reverse-bias and clamping. In reverse-bias mode, the diode operates as an open circuit, allowing no current to flow. This allows the current to be limited, preventing device damage from high voltage levels. In clamping mode, the diode operates to limit the voltage across its terminals and maintain a constant voltage drop. This allows the diode to protect against fluctuations in input and output voltages.

When the reverse voltage across the diode is greater than the diode\'s breakdown voltage, the diode is said to be "clamped". This means that the diode will maintain a constant voltage drop across its terminals and limit the current flow. This is the typical operating mode for the 1N4973, and as such it can be used to protect sensitive components from high voltage levels.

The 1N4973 is a reliable and cost-effective solution to many voltage regulator applications. Its constant voltage drop, low operating current, and low reverse leakage make it the ideal diode for many electronics applications. With its wide range of applications, the 1N4973 is a crucial component for device designers and engineers.

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