In the design of modern electronic devices, voltage regulator diodes play a crucial role in providing stable output voltage in circuits. Among them, as a member of the voltage regulator diode family, ZM4728A plays an indispensable role in various electronic applications due to its unique parameter configuration and excellent performance. This article will provide a detailed interpretation of ZM4728A, including its voltage regulation value, accuracy, power, reverse current, and impedance, among other key parameters.

Slkor Voltage Regulator Diode ZM4746A product photo

Voltage Regulation Value

The voltage regulation value (nominal value) of ZM4728A is 3.3V, which means that under normal working conditions, it can effectively maintain the voltage in the circuit at around 3.3V. This characteristic makes ZM4728A an ideal choice for circuits requiring a stable 3.3V output voltage. Whether it's a power circuit, amplifier circuit, or any other application requiring precise voltage control, ZM4728A can provide stable voltage output to ensure circuit stability and reliability.

Accuracy

The accuracy of ZM4728A is ±5%, indicating that its output voltage fluctuates within the range of 3.135V to 3.465V. This high-precision voltage regulation capability ensures the stability and reliability of the circuit, allowing ZM4728A to perform exceptionally in various applications. Whether in circuits requiring precise voltage control or those needing stable output voltage, ZM4728A can provide reliable support.

Power

The power of ZM4728A is 1W, a moderate power output that meets the requirements of most electronic devices. The appropriate power output helps maintain circuit stability and prolong device lifespan. At the same time, the 1W power ensures that ZM4728A does not overheat under normal operating conditions, guaranteeing its long-term stable performance.

Slkor Voltage Regulator Diode ZM4746A specification

Reverse Current

The reverse current (Ir) of ZM4728A is 150μA@1V, meaning that at a reverse voltage of 1V, the reverse current is 150 microamps. This low reverse current characteristic helps reduce circuit power consumption and improve efficiency. Additionally, the low reverse current means that ZM4728A exhibits minimal leakage current under reverse voltage, further enhancing circuit stability.

Impedance

The impedance (Zzt) of ZM4728A is 10Ω, indicating a relatively low impedance value in the circuit. A low impedance value helps reduce voltage drop and power loss while improving circuit response speed. This allows ZM4728A to perform exceptionally in circuits requiring fast response and precise control.

Parameters of Slkor Voltage Regulator Diode ZM4746A

Application Scenarios

With its stable 3.3V output voltage, high-precision voltage regulation capability, moderate power output, low reverse current, and low impedance, ZM4728A excels in various application scenarios. For example, in power circuits, ZM4728A can serve as a reference voltage source, providing a stable 3.3V voltage output for other circuits. In amplifier circuits, it can be used to stabilize bias voltage or operating point voltage, ensuring amplifier stability and linearity. In sensor circuits, it can provide a stable 3.3V reference voltage for sensors, improving measurement accuracy and reliability. Furthermore, in digital circuits, ZM4728A can act as a voltage regulator, providing a stable power supply voltage for logic gate circuits.

Precautions for Use

When using ZM4728A, the following points should be noted:

Ensure that the input voltage to ZM4728A does not exceed its maximum rated voltage and power to avoid damaging the device.

In high-temperature environments, ensure proper heat dissipation for ZM4728A to prevent overheating affecting device performance.

During soldering and installation, follow relevant operating specifications to avoid mechanical or thermal damage to ZM4728A.

Before use, conduct testing and verification of ZM4728A to ensure its performance meets design requirements.

The range of voltage regulator diode current limiting resistance

The range of limiting resistors for voltage regulator diodes mainly depends on the maximum rated current and operating voltage of the selected diode. The following is a detailed explanation of the range of limiting resistors for voltage regulator diodes:

Range Determination: The range of limiting resistors for voltage regulator diodes is generally between 10 ohms and 100 ohms. This range is determined based on the rated parameters of the diode and its operating conditions in specific circuits.

Considerations for Selection:

●  Power Dissipation: When selecting resistors, consider the issue of resistor power dissipation. To ensure stable operation of the resistor in the circuit, it is recommended to choose resistors with slightly higher power ratings.

● Temperature Coefficient: The temperature coefficient of the resistor is also an important consideration. To maintain temperature stability, metal film resistors or chip resistors are usually used.

● Operating Conditions: Voltage regulator diodes need to maintain a minimum stable current Izmin during operation. To ensure this basic current, limiting resistors need to be designed according to specific formulas. These formulas typically involve the variation range of input voltage, the variation range of load current, the voltage regulation value of the voltage regulator diode, and the maximum operating current.

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.