BZD27C39P-HE3-08

Series:	Automotive, AEC-Q101, BZD27C
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	39V
Tolerance:	--
Power - Max:	800mW
Impedance (Max) (Zzt):	40 Ohms
Current - Reverse Leakage @ Vr:	1µA @ 30V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 200mA
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Surface Mount
Package / Case:	DO-219AB
Supplier Device Package:	DO-219AB (SMF)

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Introduction

Diodes-Zener-Single (DSZ) are a type of semiconductor device that are typically used to regulate electrical current. A DSZ device is distinguished from other diodes by the unique properties it exhibits when voltage is applied during operation. In particular, DSZ devices possess a negative temperature coefficient which, in general, makes them especially reliable and efficient at regulating voltage. DSZs are specially designed to return a constant voltage regardless of the current drawn. This is of great use for protecting an electrical circuit and for setting reference voltages. The BZD27C39P-HE3-08 is an example of such a DSZ device. This article will analyze the application fields and working principle of this device.

Application Fields

The BZD27C39P-HE3-08 is mainly used in various power management circuits, such as switching power supplies, as well as in low-noise and battery-operated circuits. It is also well suited for portable equipment and power supplies that require a higher degree of protection against reverse currents, such as telecom systems and laptops.The BZD27C39P-HE3-08 is capable of providing high levels of voltage regulation even under wide temperature range conditions. This makes it very suitable for use in extreme and harsh environments where temperature can reach extremes. The device therefore has a wide range of potential applications, including industrial, commercial and military.Another practical use of the BZD27C39P-HE3-08 is to provide stable source voltages in equipment such as TVs, computers and satellites. The device is also used for protection against overvoltage in automotive power lines in automotive electronics.

Working Principle

The BZD27C39P-HE3-08 is based on the Zener diode\'s special behavior when a current passes through it. This device consists of two PN semiconductor layers, which create a PN junction. When the voltage applied across the device is lower than its breakdown voltage, the intensity of the current remains constant.When the voltage applied across the device reaches its breakdown voltage, electron-hole pairs, which are semiconductor pairs made out of electrons and holes, are generated. These pairs lower the breakdown voltage, making it easier for current to flow through the device. The breakdown voltage is kept constant even though the applied voltage might fluctuate, which makes the device very suitable for power regulation.

Conclusion

The BZD27C39P-HE3-08 is a kind of DSZ device, which has a wide range of potential applications in different fields such as power management, low-noise and battery-operated circuits, and protection against overvoltage in automotive power lines. Its special working principle of keeping a constant breakdown voltage even when the applied voltage fluctuates makes it a reliable choice for these purposes.

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