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MMSZ5230B from ON,ON Semiconductor

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MMSZ5230B

Manufacturer: ON, FAIRCHILD

Zener Diodes

Partnumber Manufacturer Quantity Availability
MMSZ5230B ON, FAIRCHILD 18000 In Stock

Description and Introduction

Zener Diodes # Introduction to the MMSZ5230B Zener Diode  

The **MMSZ5230B** is a surface-mount Zener diode designed for voltage regulation and protection in electronic circuits. As part of the **MMSZ series**, this component provides precise voltage clamping, making it suitable for applications requiring stable reference voltages or transient suppression.  

With a **5.1V nominal Zener voltage (Vz)** and a tolerance of **±5%**, the MMSZ5230B ensures reliable performance in low-power circuits. Its compact **SOD-123 package** allows for efficient PCB space utilization, making it ideal for modern, miniaturized designs. The diode offers a **maximum power dissipation of 500mW** and operates effectively within a **temperature range of -65°C to +150°C**, ensuring stability across various environmental conditions.  

Common applications include:  
- **Voltage regulation** in power supplies  
- **Overvoltage protection** for sensitive ICs  
- **Signal clamping** in communication circuits  
- **ESD (electrostatic discharge) protection**  

The MMSZ5230B features low leakage current and sharp breakdown characteristics, enhancing its efficiency in precision circuits. Its robust construction ensures durability, while its surface-mount design simplifies automated assembly processes.  

Engineers and designers often select the MMSZ5230B for its balance of performance, size, and cost-effectiveness, making it a versatile choice for consumer electronics, automotive systems, and industrial controls. When implementing this diode, proper thermal and current considerations should be observed to maximize reliability and longevity.

Application Scenarios & Design Considerations

Zener Diodes

Alternative Part Number

  • BZT52C4V7 --: 4.7V zener in SOD-123 with similar tolerance and power rating, widely available and pin-compatible.
  • 1N4732A --: 4.7V 1W zener in DO-41 axial package, electrically equivalent though physically larger.
  • MMSZ4689T1G --: 4.7V zener in SOD-123 from the same family line but different series naming, suitable drop-in replacement.
  • MMSZ4688T1G --: SOD-123 zener from a different series with comparable 4.7V regulation, suitable as a surface-mount substitute with similar footprint.

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