ACZRM5222B-HF

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	2.5V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	30 Ohms
Current - Reverse Leakage @ Vr:	100µA @ 1V
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	SOD-123F
Supplier Device Package:	SOD-123FL

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Diodes - Zener - Single: ACZRM5222B-HF Application Field and Working Principle

The ACZRM5222B-HF diode is a single type voltage regulator with ESD protection and is commonly referred to as a "zener diode". A zener diode is a type of diode that regulates voltage by allowing a low current to bypass the diode junction and a high current to flow when the voltage exceeds a specific threshold. The ACZRM5222B-HF also features wide temperature operating range, fast response time and low temperature coefficient.

Application Fields

The ACZRM5222B-HF is used in a wide range of applications for voltage regulation. Examples of typical applications include clamping and voltage reference circuits, voltage stabilizers, ESD protection, over-voltage protection, noise and surge protection, as well as many automotive and telecommunications applications. The ACZRM5222B-HF is capable of operating over a wide temperature range as well as over a wide frequency range and offers excellent noise immunity.

Working Principle

The basic structure of a zener diode consists of a P-type semiconductor element, which is connected to an N-type semiconductor element. One end of the N-type semiconductor element is then connected to a cathode while the other end of the P-type semiconductor element is connected to an anode. This structure creates a junction that connects these two ends of the semiconductor element and allow current to pass through it. When there is no voltage present across the junction, the junction behaves like an insulator and does not permit current to pass through it. But when an electric potential appears across the junction, electrons from the N-type can fill in the P-type and create a path for current to flow. This path causes a voltage drop across the junction. The amount of voltage drop is determined by the amount of voltage present across the junction. When the value of the applied voltage exceeds the Zener, or breakdown, voltage of the diode, a large current will flow through the junction and cause a voltage drop that is regulated to a specific value. This specific value can be adjusted by changing the breakdown voltage of the diode. The ACZRM5222B-HF diode is capable of regulating voltage over a wide temperature range with a fast response time, low temperature coefficient and excellent noise immunity.

Conclusion

The ACZRM5222B-HF Zener diode is a single type voltage regulator and ESD protection device that can be used in a wide range of applications for voltage regulation. It features wide temperature operating range, fast response time and low temperature coefficient. The working principle of this diode is based on a P-type semiconductor element that is connected to an N-type semiconductor element and a junction across the two elements. When an electric potential is applied across the junction, electrons from the N-type can fill in the P-type, creating a path for current to flow and causing a voltage drop across the junction. The amount of voltage drop is determined by the amount of voltage present across the junction, and when the value of the applied voltage exceeds the Zener voltage of the diode, a large current will flow through the junction, causing a voltage drop that is regulated to a specific value.

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