BZX79-C3V9,113

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	3.9V
Tolerance:	±5%
Power - Max:	400mW
Impedance (Max) (Zzt):	90 Ohms
Current - Reverse Leakage @ Vr:	3µA @ 1V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	-65°C ~ 200°C
Mounting Type:	Through Hole
Package / Case:	DO-204AH, DO-35, Axial
Supplier Device Package:	ALF2
Base Part Number:	BZX79C3V9

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Introduction to BZX79-C3V9,113

The BZX79-C3V9,113 is part of the single Zener diode range manufactured by Vishay Siliconix. The diode family provides a wide range of voltages from 3 V to 200 V, with tolerance ratings from 1 % to 5 %, making them suitable for a wide range of applications. This particular diode is rated for a 9.1 V Zener Voltage and is ideal for use in high power applications.

Application Fields

BZX79-C3V9,113 is well suited for both discrete component and sub-assembly use in demanding applications. It is ideal for use in reasonably high power applications, typically in excess of 1 A, and can be used across a wide range of industries.The diode can be used in a variety of applications ranging from consumer electronics to medical and aerospace applications. It can be used in the power supply of appliances such as TVs and computer monitors, as well as in medical imaging systems, high-altitude sensors, and individual component regulator circuits.

Construction and Working Principle

The BZX79-C3V9,113 is a medium-power single Zener diode housed in a hermetically sealed, industry standard SOD-123 package. This diode is designed to be effective at relatively high currents while offering low switching times. The diode is composed of three main component parts: the anode and cathode, the active region and the impurities used to create the Zener effect. The two terminals of the diode are the anode, or positive side, and the cathode, or negative side. A junction is formed in the crystal by the impurities; this junction creates the active region of the diode and is known as the Zener diode.The diode is designed for high-temperature operation and can withstand temperatures up to 150°C. At 9.1V, the Zener shoots out electrons, crossing the junction and resulting in an avalanche breakdown. This breakdown then results in a controlled flow of current in the reverse direction.

Benefits and Drawbacks

The BZX79-C3V9,113 single Zener diode has several advantages over more traditional diodes. It offers a high surge and clamping capability, allowing it to handle large currents, while its low forward voltage drop enables it to function with low power losses. It has an impressive energy rating and is temperature-stable over a large range.However, the diode has a limited forward voltage rating for Zener operation and cannot regulate currents with a great deal of precision. It also has limited power dissipation capacity, which means it will not be suitable for especially high-power applications.

Conclusion

The BZX79-C3V9,113 is a single Zener diode manufactured by Vishay Siliconix and can be used in various applications such as consumer electronics, medical imaging systems and high-altitude sensors, among others. It is a medium-power diode and offers suitable levels of performance in applications of up to 1 A and within a wide temperature range. It has both benefits and drawbacks, so it is important to assess any potential applications carefully in order to determine if it is the most suitable diode for the job.

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