ACZRA4750-HF

Series:	Automotive, AEC-Q101
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	27V
Tolerance:	±5%
Power - Max:	1W
Impedance (Max) (Zzt):	35 Ohms
Current - Reverse Leakage @ Vr:	5µA @ 20.6V
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 200mA
Operating Temperature:	-55°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	DO-214AC, SMA Flat Leads
Supplier Device Package:	DO-214AC (SMA)

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ACZRA4750-HF Diodes - Zener - Single: Application Field and Working PrincipleIntroductionThe ACZRA4750-HF is a low-voltage, low-power, ultra-high-impedance point contact zener diode designed specifically for circuit protection applications. The highly integrated design and small size make the ACZRA4750-HF ideal for use in notebook computers and other portable devices.Application FieldThe ACZRA4750-HF is designed for use in circuit protection applications where compact size, low power dissipation and excellent zener voltage regulation are of paramount importance. The ACZRA4750-HF can be used in both AC and DC protection schemes, and can be found in many types of electronic systems, including PCs, notebooks, server grounds, surge protectors and automotive systems.Working PrincipleThe ACZRA4750-HF operates on the principle of a reverse-biased p-n junction diode. When a reverse voltage is applied to the diode, electrons flow from the n-type material to the p-type material. This flow of charge creates a depletion zone in the middle of the diode, inhibiting any current flow. If a sufficiently high reverse voltage is applied, however, the depletion zone will be overcome and current will flow through the diode. This phenomenon is known as "zener breakdown" and is the basis for the ACZRA4750-HF\'s operation. The ACZRA4750-HF is designed such that when the reverse voltage exceeds a certain value, typically around 4V, the diode will conduct a large amount of current. This allows the ACZRA4750-HF to protect against a variety of potentially damaging electrical overcurrents.ConclusionThe ACZRA4750-HF is a low-voltage, low-power, point contact zener diode that is ideal for use in circuit protection applications. Its small size and high zener voltage regulation make it a valuable component in many types of electronic systems. The ACZRA4750-HF operates on the principle of zener breakdown, allowing it to protect against a variety of overcurrents.

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