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MMSZ4679 from ON,ON Semiconductor

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MMSZ4679

Manufacturer: ON, DIODES

ZENER DIODES

Partnumber Manufacturer Quantity Availability
MMSZ4679 ON, DIODES 5675 In Stock

Description and Introduction

ZENER DIODES # Introduction to the MMSZ4679 Zener Diode  

The **MMSZ4679** is a surface-mount Zener diode designed for voltage regulation and protection in electronic circuits. As part of the **MMSZ series**, this component offers precise voltage clamping, making it suitable for applications requiring stable reference voltages or transient suppression.  

With a **6.8V nominal Zener voltage (Vz)**, the MMSZ4679 provides reliable performance in low-power circuits. Its compact **SOD-123 package** ensures space-efficient integration into modern PCB designs, while maintaining robust thermal characteristics. The diode operates within a **power dissipation range of 500mW**, making it ideal for portable electronics, power management systems, and signal conditioning.  

Key features of the MMSZ4679 include:  
- **Low leakage current**, ensuring minimal power loss in standby conditions.  
- **Sharp breakdown characteristics**, enabling accurate voltage regulation.  
- **Fast response time**, effective for transient voltage suppression (TVS) applications.  

Common uses include **voltage stabilization in power supplies, overvoltage protection, and signal clamping** in communication devices. Engineers often select this diode for its balance of performance, size, and cost-effectiveness in consumer and industrial electronics.  

When designing with the MMSZ4679, proper consideration of **operating current, temperature coefficients, and load conditions** is essential to maximize efficiency and longevity. Its reliability and standardized specifications make it a practical choice for circuit protection and precision voltage control.

Application Scenarios & Design Considerations

ZENER DIODES

Alternative Part Number

  • 1N4736A --: 1N47xxA series 6.8V zener in DO-41 package; similar voltage and power rating, widely available and a common cross for MMSZ4679.
  • BZT52C6V8 --: 6.8V zener in SOD-123 surface-mount package, close electrical match to MMSZ4679 with comparable power dissipation.
  • MMSZ5235B --: 6.2V zener in SOD-123 package from a different series; near-equivalent voltage and same small-signal zener application.
  • BZT52C2V0 --: 2.0V zener in the SOD-123 package, same case style and power class as the MMSZ4679, making it a direct drop-in for board layout.
  • 1N5225B --: 3.0V axial-lead zener with comparable voltage tolerance and power rating; widely available and electrically similar for general regulation use.
  • MMSZ5226B --: 3.3V zener in the same SOD-123 surface-mount package, offering a close voltage match and equivalent power handling.

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