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MMSZ4678 from DIODES

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MMSZ4678

Manufacturer: DIODES, ON

ZENER DIODES

Partnumber Manufacturer Quantity Availability
MMSZ4678 DIODES, ON 11310 In Stock

Description and Introduction

ZENER DIODES # Introduction to the MMSZ4678 Zener Diode  

The **MMSZ4678** 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 **Zener voltage (Vz) of 6.8V** and a **power dissipation of 500mW**, the MMSZ4678 provides reliable performance in compact designs. Its small **SOD-123 package** ensures space efficiency, making it ideal for modern PCB layouts where board real estate is limited.  

Key features of the MMSZ4678 include:  
- **Low leakage current**, enhancing efficiency in standby or low-power modes.  
- **Fast response time**, enabling effective protection against voltage spikes.  
- **Tight tolerance**, ensuring consistent performance across different operating conditions.  

Common applications include:  
- **Voltage regulation** in power supplies and reference circuits.  
- **Overvoltage protection** for sensitive ICs and communication interfaces.  
- **Signal clamping** in analog and digital systems.  

Engineers favor the MMSZ4678 for its balance of size, reliability, and performance. Whether used in consumer electronics, industrial controls, or automotive systems, this Zener diode provides a cost-effective solution for maintaining circuit integrity under varying voltage conditions.  

For optimal performance, designers should consider operating temperature ranges and ensure proper heat dissipation in high-current scenarios. The MMSZ4678 remains a versatile choice for engineers seeking robust voltage regulation in a compact form factor.

Application Scenarios & Design Considerations

ZENER DIODES

Alternative Part Number

  • BZT52C1V8 --: 1.8V zener in the SOD-123 package with similar power rating, a common drop-in replacement for the MMSZ4678.
  • 1N4678 --: Axial-leaded 1.8V zener with the same voltage and current ratings, suitable when a through-hole equivalent is acceptable.
  • MMSZ5226B --: SOD-123 1.8V zener from a different series with comparable tolerance and power dissipation.
  • DDZ9678 --: 1.8V zener diode in SOD-123 package with comparable tolerance and power dissipation.
  • MMSZ5221B --: Same SOD-123 zener family with 1.8V nominal voltage, though tolerance differs slightly; good second-source option.

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