3EZ3.9D/TR12

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Introduction to 3EZ3.9D/TR12

3EZ3.9D/TR12 is a type of diode specifically designed for Zener applications. It is a single Zener diode with an epoxy resin package, manufactured by Vishay Semiconductor. This device is specially designed to provide exceptionally accurate and stable reference voltage in order to perform various electronic tasks. The 3EZ3.9D/TR12 is capable of operating at very low currents, making it highly suitable for use in a variety of applications.

Application Field and Working Principle of 3EZ3.9D/TR12

The 3EZ3.9D/TR12 is a highly reliable and versatile device that can be used in a variety of applications, including power supply regulation and voltage reference circuits. In these applications, the 3EZ3.9D/TR12 functions as a voltage reference, providing a highly accurate and stable output voltage. It is also used for over-voltage protection, reverse voltage protection, and noise suppression. The 3EZ3.9D/TR12 is also used in precision rectifiers, battery charge controllers, and DC–DC converters.

The 3EZ3.9D/TR12 is a Zener diode, and its working principle is based on Zener breakdown. Zener breakdown is a phenomenon that occurs when reverse biased voltage exceeds a certain level (known as the Zener voltage or break down voltage VZ) for a diode junction. When the reverse biased voltage in a diode exceeds this level, the diode does not conduct in the forward direction but passes a certain amount of current in the reverse direction. This current (called Zener current Iz) depends on the amount of reverse bias, and it remains constant if the reverse bias is maintained at or above the Zener voltage. The Zener voltage is determined by the band gap energy of the material that forms the power rectifying junction.

The 3EZ3.9D/TR12 has a Zener voltage of 3.9V, with a maximum reverse current at 25˚C of 1mA. It also has a breakdown voltage temperature coefficient of (-5 mV/˚C) and a maximum power dissipation of 350 mW at TA = 25˚C. The device also has a surge reverse current of 31mA, a peak repetitive reverse voltage of 57V, and a reverse leakage current of 0.3μA. In addition, the device has a total capacitance of 17.4 pF.

Conclusion

The 3EZ3.9D/TR12 is a single Zener diode with an epoxy resin package, manufactured by Vishay Semiconductor. It is specifically designed to provide exceptionally accurate and stable reference voltage in order to perform various electronic tasks. The 3EZ3.9D/TR12 has a Zener voltage of 3.9V and can be used in applications such as power supply regulation and voltage reference circuits, over-voltage protection, reverse voltage protection, noise suppression, precision rectifiers, battery charge controllers, and DC–DC converters.

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