BZD27B7V5P-M3-18

Series:	Automotive, AEC-Q101, BZD27B-M
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	7.5V
Tolerance:	--
Power - Max:	800mW
Impedance (Max) (Zzt):	2 Ohms
Current - Reverse Leakage @ Vr:	50µA @ 3V
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

The BZD27B7V5P-M3-18 is a single-terminal Zener diode with features that make it suitable for a variety of applications. NXP Semiconductors, the manufacturer of this part, advertises it as having a very low reverse leakage current and an across-the-line voltage rating of 18 V. It also has an operating temperature range of -65 to +175 degrees Celsius, making it suitable for a wide range of operating temperatures. In this article, we\'ll take a look at the application fields of this part, as well as its working principle.

Applications

The BZD27B7V5P-M3-18 Zener diode has a range of applications. Its wide operating temperature range and low reverse leakage current make it suitable for use in protection circuits and voltage regulation applications. It is capable of preventing current flow in one direction and allowing it to flow in the opposite direction, making it an ideal choice for use in power converters, general-purpose switching, and reverse battery protection circuits.The BZD27B7V5P-M3-18\'s low voltage rating means it can also be used in low-voltage applications, such as low-voltage LED lamp drivers. In this case, the diode is used to regulate the voltage on the LED\'s anode and cathode, ensuring that the LED emits light at the correct voltage.

Working Principle

Zener diodes are a type of semiconductor device that allow current to flow in the forward direction, while also allowing the flow of current in the reverse direction when a certain voltage threshold, called the Zener voltage, is reached. This is achieved by creating an additional conduction path, known as a Zener knee, in the diode\'s reverse breakdown region. When the BZD27B7V5P-M3-18 Zener diode is forward biased, current flows from the anode to the cathode. When the reverse voltage exceeds the diode\'s Zener voltage, the Zener knee is created, allowing the current to flow from the cathode to the anode. This creates a constant voltage across the diode, despite changes to the reverse voltage. The BZD27B7V5P-M3-18 has a very low reverse leakage current, meaning that when voltage is applied across the diode and it is forward biased, very little current passes through the diode. This makes it highly suitable for use in protection circuits, as it can be used to isolate the circuit from over-voltage or excessive current.

Conclusion

The BZD27B7V5P-M3-18 is a single-terminal Zener diode with a range of features that make it suitable for use in a variety of applications. Its wide operating temperature range and low reverse leakage current allow it to be used in a number of protection and voltage regulation circuits, while its low voltage rating makes it suited to low voltage applications such as LED drivers. The working principle of the BZD27B7V5P-M3-18 is based on its reverse voltage characteristics, which create a Zener knee and a constant voltage across the diode.

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