1N5731B

Series:	--
Packaging:	Bulk
Part Status:	Active
Voltage - Zener (Nom) (Vz):	6.2V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	10 Ohms
Current - Reverse Leakage @ Vr:	3µA @ 4V
Voltage - Forward (Vf) (Max) @ If:	900mV @ 10mA
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Through Hole
Package / Case:	DO-204AH, DO-35, Axial
Supplier Device Package:	DO-35
Base Part Number:	1N5731

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Introduction

1N5731B is an excellent Zener diode, which can be used in a variety of applications to provide electrical isolation, voltage regulation, and voltage limiting. Its single-piece design reduces the complexity and cost of production. In this article, we will discuss 1N5731B\'s application field and working principle.

Application Field

The 1N5731B Zener diode is suitable for a wide range of applications, such as power supplies, voltage regulation, voltage limiting, voltage switching, voltage detection and rectification. In voltage regulation, it can be connected in parallel with a resistor to act as a clamp to protect overvoltage, or connected in series as a voltage divider for precision voltage reference circuits. When applied in voltage limiting, it can be used to block transients and other unwanted voltages. Furthermore, it is also suitable for DC to DC converters, flyback transformers, surge suppressors and voltage detectors, as well as other applications.

Working Principle

The 1N5731B Zener diode is a two-terminal device designed to operate in the reverse breakdown region. When reverse biased, the diode increases the breakdown voltage drop across its junction. The voltage drop is comparable to a diode forward biased voltage drop. This voltage drop is known as the Zener voltage, or breakdown voltage, and it remains constant regardless of the current passing through the device. This current- and temperature-independent voltage makes the 1N5731B an ideal choice for effective voltage regulation. The 1N5731B can be used as a constant-current source, with the current determined by the value of a series resistor (R1) connected between the device\'s terminals. The current flowing through the device is approximately equal to the Zener voltage when divided by the resistance of the series resistor. When used as a voltage regulator, the 1N5731B is positioned in series between the power supply and the load. The current will then be forced to flow through the Zener diode, resulting in an increased voltage drop between the anode and the cathode. The voltage drop is equal to the Zener voltage reduced by the diode\'s forward voltage drop.

Conclusion

To conclude, the 1N5731B Zener diode is suitable for a range of applications, including power supplies, voltage regulators and limiters, voltage detectors and rectifiers, DC to DC converters, flyback transformers and surge suppressors. It operates by increasing the breakdown voltage drop across its junction, creating a voltage drop that is independent of current and temperature. The device can also be used as a constant-current source, and in a voltage regulator configuration.

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