Diodes - Zener - Single: ACZRM5247B-HF application field and working principle

ACZRM5247B-HF is a type of Zener diode which serves to regulate a voltage at a given level. It has applications in various areas such as power management, over current tampering, ESD protection, and regulation of signals in electronic circuits. This diode is designed to operate at temperatures upto 175 ℃. It is a small signal, low voltage diode with a power handling capability of 500mW. This datasheet focuses on the applications, features and working principle of the ACZRM5247B-HF diode, as well as its specifications.

Applications

The ACZRM5247B-HF is a versatile diode with a wide range of applications. Its primary applications include:

• Power management – The diode is used to regulate power in various electronic devices, controlling their power supply and preventing any over current tampering.
• ESD protection – This diode can be used in synchronization with a capacitor to provide ESD protection and reduce noise in certain electronic systems.
• Voltage regulation – This diode is able to maintain a stable voltage across two nodes, and hence it is used for voltage regulation in many electronic circuits and systems.
• Signal regulation – The ACZRM5247B-HF is used to regulate signals in various electronic systems, preventing disruption or distortion of signal integrity.

Features

The ACZRM5247B-HF has several impressive features which make it an ideal diode for a number of applications:

• High current handling capacity – The diode can handle currents upto 500mA making it an effective voltage regulator.
• High reliability – The maximum operating temperature of this diode is 175°C allowing it to work in high temperature environments. This also makes it a very reliable device.
• Low voltage operation – This diode has a breakdown voltage of 5.2V, enabling it to be used for low power applications.
• Low capacitance – The diode has a very low capacitance of 350pF which is ideal for high frequency applications.

Working Principle

The ACZRM5247B-HF is a Zener diode, which operates on a reverse-bias voltage. In this state, no current flows through the diode and the junction is “open”. When a voltage is applied to the diode in a reverse-bias direction, a large electric field is applied across the junction. This electric field causes some electrons to break free and enter the conduction band, resulting in what is known as Zener current. This Zener current is then regulated by the diode’s properties to ensure the voltage across the junction stays constant.

Specifications

The ACZRM5247B-HF has the following specifications:

• Breakdown Voltage : 5.2V
• Maximum Operating Temperature: 175°C
• Maximum Continuous Current: 500mA
• Capacitance: 350pF