Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	22V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	29 Ohms
Current - Reverse Leakage @ Vr:	100nA @ 17V
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	SOD-123
Supplier Device Package:	SOD-123

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Introduction

MMSZ5251B-HE3-18 is an advanced Zener diode made by Multicomp, suitable for a range of applications. This state-of-the-art device is designed to work under extreme conditions and still maintain a high level of performance.

Application Field

MMSZ5251B-HE3-18 is a Zener diode with a breakdown voltage of 18V. This device is specifically designed to withstand high voltages and can be used to protect against voltage surges and spikes. It can be used in a number of applications such as over-voltage protection, AC line monitoring, current limiting, and noise suppression.

Working Principle

The core of the MMSZ5251B-HE3-18 is its Zener diode structure. It works on the principle of reverse biased conduction. When a potential higher than the breakdown voltage of the device is applied across the diode, it will start conducting current in a reverse biased direction. In this mode, the diode acts as a voltage regulator as it clamps the incoming voltage to a predetermined level. The device is also capable of handling large voltage and current spikes. This is due to its planar construction which offers significant voltage clamping and breakdown protection. Additionally, the device is protected against ESD and transient current spikes, making it suitable for a range of applications.

Conclusion

In conclusion, the MMSZ5251B-HE3-18 is an advanced Zener diode with a breakdown voltage of 18V. It is suitable for over-voltage protection, AC line monitoring, current limiting, and noise suppression. It is designed to work under extreme conditions and still maintain excellent performance. It is also protected against ESD and transient current spikes which make it a perfect choice for a range of applications.

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