Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Voltage - Zener (Nom) (Vz):	11V
Tolerance:	±2%
Power - Max:	400mW
Impedance (Max) (Zzt):	10 Ohms
Current - Reverse Leakage @ Vr:	100nA @ 8V
Voltage - Forward (Vf) (Max) @ If:	1.1V @ 100mA
Operating Temperature:	-65°C ~ 150°C
Mounting Type:	Surface Mount
Package / Case:	SC-90, SOD-323F
Supplier Device Package:	SOD-323F
Base Part Number:	D3Z11

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D3Z11BF-7 Application Field and Working Principle

Introduction

The D3Z11BF-7 single Zener diode is a versatile mediator between two different voltage domains. It regulates an incoming voltage within a certain range, by steering a Zener current, and preventing overvoltage or undervoltage. It does not draw current as it operates, and threfore does not dissipate energy. It offers a degree of electrical isolation between the two domains and allows for current flow in one direction only.

Applications

The D3Z11BF-7 finds a broad range of applications in low power applications, such as voltage regulation in battery charging, stabilizing power supply units, overvoltage protection, optical drives and RF transceivers, among other uses. Many devices that require constant voltage and current supply are not operational with a regular diode, and require a Zener diode, like D3Z11BF-7, to regulate the input and maintain safety.

Features

The D3Z11BF-7 is ideal for applications that require voltage regulation. It has an operating range of 5.1V to 6.9V, a power rating of 500mW and a breakdown voltage of 5.4V. The maximum Zener capacitance is 7.2pF, and the maximum Zener impedance is 5.2 ohms. It utilizes epoxy encapsulation and is available in a SOT-23 package.

Working Principle

The D3Z11BF-7 compliments the conventional diode by controlling the current flow in a forward biased state, while reducing the reverse bias voltage below the breakdown voltage of the diode. This is achieved by a process that often involves using avalanche effect.When an input voltage across the Zener diode reaches the reverse bias breakdown voltage of the diode, the intensity of electric field at the junction increases, resulting in the emission of minority charge carriers from the valence to the conduction band, creating an avalanche of primary carriers and secondary carriers. This process is necessary for the diode to break down and conduct a Zener current.

Advantages

The D3Z11BF-7 offers several advantages over other Zener and rectifier diodes. It has a low Zener impedance, which allows for a precise control of the input voltage, and its low capacitance provides higher speed of response to altering voltages. It is also a single diode, which means it requires less space on the application PCB. It is robust, reliable and offers longer service life than conventional diodes.

Conclusion

The D3Z11BF-7 single Zener diode is a versatile device that provides regulation of incoming voltage. It is reliable, low-cost and simple to configure. It finds a broad range of applications in various low power applications, and its design makes it suitable for several applications. The Zener diode works via avalanche effect and is capable of handling higher reverse breakdown voltages. Its low Zener impedance and low capacitance facilitates a precise control of the input voltage. The D3Z11BF-7 is a great choice for most applications that require voltage regulation.

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