MMBZ5253B_D87Z

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Diodes are essential components that allow the flow of current in one direction, while blocking it in the other. The MMBZ5253B_D87Z belongs to the single Zener diode family of components and is used for the purpose of providing reverse bias on the current passes through it, which protects the subsequent circuit from excessive current. This diode is used in a wide range of applications, from commercial and industrial to military and aerospace.

The Zener diodes consist of two basic elements: a base semiconductor, usually made of silicon or germanium and two P-N layers of opposite types, which are arranged in succession. This creates a depletion region at the junction where the P and N layers meet and will prevent the current flow in the opposite direction. The MMBZ5253B_D87Z uses a 1N34A type semiconductor, which is a germanium diode that has extremely low reverse leakage currents and a low minimum breakdown voltage. This makes it ideal for the operation of circuits in extremely high voltage and current conditions.

The diode can handle reverse voltages up to 75 volts, although the breakdown voltage is only 5.3 volts at a maximum current of 10mA. The maximum surge current is 40mA and the peak pulse current is 60mA. It has a power dissipation capacity of 500mW and a thermal resistance value of 200 degrees Celsius per watt. This diode can also be used as a temperature monitor providing a voltage signal at a temperature range of -65°C to +175°C.

The primary application of the MMBZ5253B_D87Z is to serve as a voltage reference and protective reliable reverse bias mechanism in many circuits, such as over-voltage protection circuits and switch mode power supplies, as well as in electronic device protection against high voltage spikes. This diode is also used in automotive electronics to provide voltage references and robust protective reverse bias, due to its ability to maintain a low forward voltage drop while operating at high current levels. There are other applications such as telecoms equipments and LCD displays, which require reverse biased current paths that operate in high voltage circuits.

The working principle of the MMBZ5253B_D87Z is based on a voltage drop across the PN junction which occurs when current passes in the reverse direction through the diode. The voltage drop across the PN junctions is fairly constant and depends upon the type of diode used and the duration of the current passing through it. The breakdown voltage of the MMBZ5253B_D87Z is set to 5.3 volts and the diode starts to conduct when the voltage across its anode and cathode terminals is 6 volts or more. This ensures that the current flow is safe and reliable and does not exceed the maximum current rating. The reverse leakage current of this diode is extremely low, of the order of 0.002mA at 5.3 volts, ensuring maximum efficiency and reliability.

In summary, the MMBZ5253B_D87Z is a single Zener diode which is used in a wide range of applications due to its reliable and impressive operating characteristics. It is capable of handling reverse voltages up to 75 volts, with a low breakthrough voltage of 5.3 volts and low reverse leakage current. This makes it suitable for many industrial and commercial applications, as well as for military and aerospace purposes. Its wide range of uses also ensure that it can handle peak pulse current and reverse leakage current levels which are well above standard.

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