SMBG4746A/TR13

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Diodes - Zener - Single

The SMBG4746A/TR13 is a single Zener diode. Zener diodes are a type of diode characterized by their stable reverse breakdown voltage. This allows them to be used in a wide variety of applications where a stable voltage is needed.

The SMBG4746A/TR13 features a power dissipation of 500mW, a breakdown voltage of 3.3V, a current capability of 15mA, and a maximum reverse leakage current of 1uA. It also has a zero reverse breakdown voltage temperature coefficient of 5mV/degC. This makes it perfect for use in current limitation and over-voltage protection circuits.

In terms of its application field, the SMBG4746A/TR13 finds its place in many low power and medium power electronics applications. It is often seen being used as a voltage clamp in audio gear, power supplies, and industrial electronics, as well as a protection device for microprocessor circuits. In addition, it can be used for driving LEDs and for circuit stabilization.

The working principle of the SMBG4746A/TR13 is based on the use of a built-in electric field that responds to the applied voltage. The electric field, known as the Zener breakdown voltage, is arranged so that current can flow in both directions and cause the voltage to remain stable and constant. When an external voltage is applied, the electric field increases so that current can flow in both directions. As the current is directed to the cathode, the resistance in the circuit is maintained and the voltage is kept constant.

The Zener breakdown voltage is determined by carefully controlling the doping concentration of the diode. By controlling the doping concentration and the width of the depletion zone at the junction, engineers are able to accurately predict the breakdown voltage of the diode. This makes it easy to design circuits that require a fixed voltage.

In addition to its fixed breakdown voltage, the SMBG4746A/TR13 also has a temperature coefficient of 5mV/˚C. This feature helps ensure that the breakdown voltage of the diode will remain stable even if the temperature of the circuit changes. This makes it an ideal choice for applications that need to maintain a constant voltage over a wide range of temperatures.

In summary, the SMBG4746A/TR13 is a single Zener diode that is ideal for use in low and medium power electronics applications. It features a power dissipation of 500mW, a breakdown voltage of 3.3V, a current capability of 15mA, and a maximum reverse leakage current of 1uA. In addition, it has a temperature coefficient of 5mV/˚C, which allows it to maintain a stable breakdown voltage over a wide range of temperature.

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