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Diodes - Zener - Single

The 1SMB5947HR5G diode is a type of single Zener diode. It features an off-state voltage of 5.7V, a power of 500mW, and a minimum breakdown voltage of 6V. It is designed for unidirectional and bidirectional applications, and for circuit protection. This diode is ideally used for a variety of applications, such as in low power DC switching and AC/DC rectifier circuits, as a voltage regulator in voltage-controlled amplifiers, and as a transient voltage suppressor.

The Working Principle

The 1SMB5947HR5G diode is a Zener diode, which works by allowing current to flow in reverse. When a sufficient voltage is applied to the anode relative to the cathode, a process called Zener breakdown occurs, resulting in a significant increase in current and the establishment of a nearly constant voltage between the two electrodes, known as the Zener voltage. Since the diode’s current-voltage relationship prior to the breakdown is nearly constant, the breakdown voltage is relatively stable regardless of the device temperature and power dissipation.

The electric current flowing in the diode reverses direction after the breakdown voltage has been reached. As the current reverses, the Zener voltage across the diode also reverses, but remains at the same level. When a reverse voltage is applied to the 1SMB5947HR5G diode, the electric current is regulated to maintain the Zener voltage, providing the device with regulated current and improved noise immunity. Because of this ability to regulate current, the diode is ideal for voltage regulation and circuit protection.

Application Field

The 1SMB5947HR5G diode is useful in low power AC/DC rectifier circuits and DC switching circuits, as well as in voltage-controlled amplifiers and transient voltage suppressors. It can be used as a voltage regulator in many applications, including those that require a stable voltage regardless of the environment, such as the automotive and aerospace industries. The diode can also be used in LED displays to increase the power efficiency of the lights.

Because of its ability to regulate voltage, the 1SMB5947HR5G diode is also useful for applications in which voltage spikes are an issue. These spikes can disrupt the operation of sensitive electronic components, and the diode can limit their effects. The diode can also be used to protect sensitive components from electrical noise or overvoltage, such as those found in telecommunications and automotive systems.

In addition, the 1SMB5947HR5G diode can be used in power distribution circuits. It can be used to regulate the voltage of power lines, preventing voltage drops that can cause system failures. The diode can also be used in DC-DC converters, allowing the efficient conversion of one DC voltage to another.

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