In the large family of electronic components, voltage regulator diodes are favored by engineers for their unique voltage stabilization performance. Among them, the commonly used ZM4731A voltage regulator diode holds an important position in electronic device design due to its stable 4.3V stabilization value, ±5% accuracy, and 1W power output.

Slkor Voltage Regulator Diode ZM4731A product photo

Slkor Voltage Regulator Diode ZM4731A specification

I. Key Technical Features of ZM4731A

Stabilization value (nominal value): The stabilization value of ZM4731A is 4.3V, meaning that under normal working conditions, the diode can maintain a stable output voltage to provide a stable power supply for the circuit.

Accuracy: The ±5% accuracy ensures that the output voltage remains stable within a certain range, even with variations in power supply voltage or load current, thus maintaining good voltage regulation.

Power: The 1W power output enables ZM4731A to meet the power requirements of most circuit designs, ensuring stable operation of the circuit.

Reverse current (Ir): At a reverse voltage of 1V, the reverse current of ZM4731A is 50μA, reflecting the diode's performance under reverse bias.

Impedance (Zzt): The impedance of ZM4731A is 9Ω, which measures the resistance of the diode under specific conditions and significantly influences the stability and performance of the circuit.

Parameters of Slkor Voltage Regulator Diode ZM4731A

II. Application Scenarios of ZM4731A

Voltage stabilization: ZM4731A is commonly used in voltage stabilization circuits to provide a stable power supply for the circuit, ensuring its stable operation.

Voltage reference: Due to its stable output voltage and high accuracy, ZM4731A is often used as a voltage reference source to provide precise voltage references for other circuits.

Protection circuit: In certain circuits where it is necessary to limit the voltage or current to protect other components, ZM4731A can serve a protective role in the circuit with its voltage regulation and reverse current characteristics.

III. Considerations for Use

Heat dissipation: Due to the high power of ZM4731A, attention should be paid to heat dissipation during use to avoid overheating, which could lead to degraded performance or damage.

Reverse voltage: Despite having a certain reverse current under reverse bias, excessive reverse voltage may still damage the diode, so attention should be paid to the limitation of reverse voltage during use.

Accuracy matching: In applications requiring high-precision voltage regulation, it is important to ensure that the selected voltage regulator diode matches other components in the circuit design to achieve the best voltage regulation effect.

IV. Advantages of Voltage Regulator Diodes

High stability: Voltage regulator diodes can provide a stable voltage output within a stable region, unaffected by load changes. This characteristic makes voltage regulator diodes perform well in circuits requiring high-precision voltage control, such as communication equipment, power supplies, and industrial automation equipment.

Strong noise immunity: Voltage regulator diodes have good noise immunity, filtering out interference signals in the input voltage to ensure stable operation of the circuit.

Fast response: Compared to general DC power sources, voltage regulator diodes have a faster response time, quickly responding to load changes to ensure circuit stability and reliability.

Wide applicability: Voltage regulator diodes have a wide voltage range and high accuracy, typically reaching a few thousandths, enabling them to meet the requirements of various circuit designs.

Convenient use: Voltage regulator diodes have a simple usage method and only need to be connected to the circuit requiring voltage regulation, without the need for complex debugging and configuration.

V. Considerations for Using Voltage Regulator Diodes

Temperature characteristics: The operational characteristics of voltage regulator diodes are greatly affected by temperature, leading to significant changes in output voltage with temperature variations. This necessitates considering temperature compensation or selecting voltage regulator diodes with lower temperature coefficients in practical applications.

Current limitations: The current output of voltage regulator diodes is limited, unable to provide high current output. This limits their application in circuits requiring high current output.

Complex circuit structure: The circuit structure of voltage regulator diodes is relatively complex, requiring attention to circuit resonance issues. Additionally, since voltage regulator diodes consume a certain amount of power during operation, appropriate consideration of heat dissipation is necessary.

About Slkor：
Slkor has research and development offices in Busan, South Korea, Beijing, China, and Suzhou, China. Most of the wafer manufacturing and packaging and testing are carried out within China. The company employs and collaborates with individuals and organizations worldwide, with a laboratory for product performance and reliability testing and a central warehouse located at its headquarters in Shenzhen. Slkor has filed for over a hundred invention patents, offers more than 2,000 product models, and serves over ten thousand customers globally. Its products are exported to countries and regions including Europe, the Americas, Southeast Asia, and the Middle East, making it one of the rapidly growing semiconductor companies in recent years. With well-established management systems and streamlined workflows, Slkor has rapidly enhanced the brand awareness and reputation of its "SLKOR" brand through its outstanding quality and standardized services. Its product range includes three major series: diodes, transistors, and power devices, with recent introductions of new products such as Hall elements and analog devices, expanding its presence in sensors, Risc-v microcontrollers, and other product categories.