1SMA4746 R3G

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The 1SMA4746 R3G diode is a single Zener diode which is applicable in a wide range of different fields with numerous uses. Typical applications of this diode range from automotive and power supply applications, to telecom and industrial alike. Additionally, the 1SMA4746 R3G is also used for supplying different voltage levels for digital ICs, such as microprocessors, and for clipping applications for digital to analog converters.

The working principle of a Zener diode is quite simple yet effective. Zener diodes employ the same process of rectification as all other types of diode, except with one major difference in that it allows current to travel in both directions, not just from anode to cathode as typical. This reversibility of current is achieved by connecting a battery across the two leads of the diode, thereby creating an electric potential difference. When the voltage potential difference across the diode reaches beyond a certain threshold, known as the breakdown voltage, the current will start to flow in the opposite direction at a very stable rate and is known as Zener breakdown. The breakdown voltage of a Zener diode is determined and set during manufacture.

The 1SMA4746 R3G diode operates by allowing a stable current to flow across it when subjected to a reverse voltage. This reverse voltage can be created by either voltage sources or other active circuit elements, such as transistor switches, inductors, and resistors, to name a few. This steady current flow is able to produce a voltage across a load connected to the diode, thereby creating a regulated voltage source and providing stability during circuit operation. While the exact current that is to be produced at the breakdown voltage is determined during the manufacturing process and is listed in the diode’s specification, the actual current that is produced across the diode under reverse biased conditions can be affected by temperature, humidity and other environmental factors.

When using the 1SMA4746 R3G diode, it is essential to consider the various parameters that may influence the output current of the diode. The major parameters to consider include the type of circuitry that is being used, the breakdown voltage, the temperature coefficient of the diode, and the maximum repetitive peak reverse voltage. Applying the diode correctly and to the correct specifications is essential for correctly utilizing the diode and maximizing its efficiency.

In summary, the 1SMA4746 R3G is a single Zener diode that is most commonly used for voltage regulation, clipping and supply applications. It is a very reliable diode and can operate in a wide range of temperatures and electric environments. It is important to consider the major parameters associated with the diode when using it in a circuit, as they can affect its performance.

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