MMSZ5253B-E3-18

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	25V
Tolerance:	±5%
Power - Max:	500mW
Impedance (Max) (Zzt):	35 Ohms
Current - Reverse Leakage @ Vr:	100nA @ 19V
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	SOD-123
Supplier Device Package:	SOD-123

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MMSZ5253B-E3-18 Application Field and Working Principle As part of the Zener diodes, MMSZ5253B-E3-18 is a single type device with various applications. This diode is mostly used for voltage regulation, voltage clamping, reference levels and protection. The detailed characteristics and technical specifications of this diode make it suitable for various applications and designs.The MMSZ5253B-E3-18 is a 4.7 Volt Zener diode with a current rating of 18 milliamps. It comes in a SOD-123 package, is RoHS compliant and offers 500 mW of maximum power. The device’s operating temperature range is -55 to + 150 Celsius and the maximum reverse voltage is 5.2 Volts. Additionally, it has an average forward current of 500 microamps, a peak forward surge current of 10 amps and an Peak forward voltage of 1.2 Volts. The working principle of the MMSZ5253B-E3-18 is not complicated. It works on the principle of Zener breakdown and Avalanche effect. The Zener breakdown occurs when the reverse voltage applied across the device is more than the Zener breakdown voltage. This breakdown causes the flow of current in the diode in the reverse direction known as Zener current. The Avalanche effect is the breakdown caused due to the field-induced electrons and holes being accelerated towards one another while they are in contact with the N-type and P-type material. This results in a significant increase in the reverse current.The MMSZ5253B-E3-18 diode is able to provide a regulated and stabilized voltage level due to the Zener breakdown and avalanche effect. This makes the device suitable for various applications such as Voltage Regulation and protection.In Voltage Regulation, the diode is mostly used for providing a steady output voltage. It is able to regulate voltage by drawing a current through the diode until the Zener voltage is reached and avalanche effect is triggered. This allows the device to provide steady output voltage.The device can also be used for protection. The Zener breakdown and avalanche effect provide a mechanism for limiting the voltage across the diode and hence, provide protection from voltage surges. This makes the device suitable for various protection applications such as circuit protection, EMI/RFI protection, load protection, and surge protection.In summary, the MMSZ5253B-E3-18 is a single type Zener diode with various applications. The detailed specifications and characteristics make it suitable for various applications such as Voltage Regulation, Protection, Clamping and reference levels. The device works on the principle of Zener breakdown and Avalanche effect which helps to provide a regulated output voltage.

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