SMZG3805B-E3/5B

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	47V
Tolerance:	±5%
Power - Max:	1.5W
Impedance (Max) (Zzt):	67 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 35.8V
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	DO-215AA, SMB Gull Wing
Supplier Device Package:	DO-215AA (SMBG)
Base Part Number:	SMZG3805

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SMZG3805B-E3/5B Application Field and Working Principle

Diodes are new components currently used in all types of modern electronic and electrical equipment. A Zener diode (named after its inventor and also commonly known as a Zener diode regulator) is a semiconductor device that uses the reverse breakdown qualities of materials to provide a voltage reference and voltage regulation. Furthermore, it operates mainly in the breakdown region, and it is also used as a voltage reference and as a component in voltage regulation circuits.The SMZG3805B-E3/5B is a single Zener diode suitable for use in various applications such as power supplies, DC-to-DC converters, battery chargers and other switching mode circuits. It has a single Zener diode configuration and can regulate the output voltage with an efficient, reliable, and fast response. Additionally, it features a wide operational voltage range and high current capability. In addition, this product is available in a number of packages, including ceramic cases and single-in-line (SIL) packages.The SMZG3805B-E3/5B Zener diode has a block structure of P-type and N-type layers, which form the PN junction. Like all diodes, the junction between the P-type and N-type layers is composed of a depletion region, where the electrons and holes are separated, and a cell region, where electric charge can move freely.The structure of the SMZG3805B-E3/5B Zener diode allows it to be operated as a normal diode when it is forward-biased. Under this condition, it will allow current to pass through freely, and no current will flow in the reverse direction. When the reverse voltage applied to the Zener diode exceeds its Zener voltage, the diode passes current in the reverse direction. This is known as the Zener breakdown effect.The SMZG3805B-E3/5B Zener diode requires a maximum operating current (Izm), above which the diode could suffer permanent damage due to its own current. This current is usually defined by a parameter called the Zener impedance, which is the resistance the device provides to the flow of current in the breakdown area. The breakdown voltage (Vz) changes with current, temperature, and the junction capacitance, and is therefore called the dynamic Zener voltage. However, the maximum breakdown voltage is called the static Zener voltage.The SMZG3805B-E3/5B Zener diode is used typically in power supplies, DC-to-DC converters, and battery chargers. These devices prevent circuit design from over-voltage faults. In addition, it can be used as a voltage reference for semiconductor sensors, such as temperature sensors, or for op-amps and comparators.The SMZG3805B-E3/5B Zener diode is ideal for applications that require space-efficient design, high reliability, and efficient operation. It uses a single-diode configuration and requires no heatsink, allowing it to be applied easily to circuits. Furthermore, this diode increases efficiency and reduces the circuit’s complexity and cost.In summary, the SMZG3805B-E3/5B Zener diode is a highly efficient, reliable, and cost-effective component for use in a variety of applications. It provides voltage reference and voltage regulation and is used in power supplies, DC-to-DC converters, and battery chargers. Furthermore, it operates in the breakdown region and is available in a range of packages.

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