ZMM5248B-7 Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Voltage - Zener (Nom) (Vz):	18V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	21 Ohms
Current - Reverse Leakage @ Vr:	100nA @ 14V
Voltage - Forward (Vf) (Max) @ If:	1.5V @ 200mA
Operating Temperature:	-65°C ~ 175°C
Mounting Type:	Surface Mount
Package / Case:	DO-213AC, MINI-MELF, SOD-80
Supplier Device Package:	Mini MELF
Base Part Number:	ZMM5248

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Introduction

ZMM5248B-7 is a single zener diode designed for reliable operation in high speed applications. As compared to other zener diodes, it features a wide dynamic voltage range of 30 to 200 V and an operating temperature range of -55°C to 175°C. Its superior ESD protection properties make it suitable for fitting onto boards containing sensitive components.

Application Field and Working Principle

ZMM5248B-7 is mainly used in a variety of high frequency and high power applications, such as low voltage switches, voltage regulators and power supply circuits. It is also suitable for use in power management, distributed power systems and point-of-load power converters.ZMM5248B-7 has two operating principles. The first is called avalanche breakdown. When a voltage greater than the zener or avalanche breakdown voltage is applied across the diode, an electric current begins to flow through it. This current is referred to as the zener or avalanche current. As the current increases, the voltage drop across the diode decreases, controlling the voltage that is applied to the load.The second principle is called temperature coefficient. As its name suggests, the temperature coefficient of the diode is affected by changes in temperature. This temperature coefficient works in conjunction with the zener action to maintain the output voltage within a given range, allowing for the diode to work reliably and accurately over a wide input voltage range.

Conclusion

ZMM5248B-7 is an excellent choice when needing to provide voltage regulation and surge protection in high speed and high power applications. Its wide dynamic voltage range, operating temperature range and superior ESD protection properties make it a reliable and robust diode. It is suitable for use in a variety of applications, such as low voltage switches, voltage regulators and power supply circuits.

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