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MMSZ4V3T1 from ON,ON Semiconductor

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MMSZ4V3T1

Manufacturer: ON, MOTO

Zener Regulator

Partnumber Manufacturer Quantity Availability
MMSZ4V3T1 ON, MOTO 75248 In Stock

Description and Introduction

Zener Regulator # Introduction to the MMSZ4V3T1 Zener Diode  

The MMSZ4V3T1 is a surface-mount Zener diode designed for voltage regulation and protection in electronic circuits. With a nominal Zener voltage of 4.3V, it is commonly used in applications requiring precise voltage clamping, such as power supplies, signal conditioning, and overvoltage protection.  

This diode features a small SOD-123 package, making it suitable for space-constrained PCB designs. Its low leakage current and sharp breakdown characteristics ensure reliable performance in both forward and reverse bias conditions. The MMSZ4V3T1 is optimized for fast response times, making it effective in transient voltage suppression (TVS) applications.  

Key specifications include a power dissipation of 500mW and an operating temperature range of -65°C to +150°C, ensuring stability across various environmental conditions. Engineers often integrate this component into circuits where maintaining a stable reference voltage or protecting sensitive components from voltage spikes is critical.  

The MMSZ4V3T1 is widely used in consumer electronics, automotive systems, and industrial controls due to its compact size, efficiency, and robustness. When selecting this diode, designers should consider its voltage tolerance, power rating, and thermal characteristics to ensure optimal circuit performance.  

Overall, the MMSZ4V3T1 provides a cost-effective solution for voltage regulation and protection, making it a versatile choice for modern electronic designs.

Application Scenarios & Design Considerations

Zener Regulator

Alternative Part Number

  • BZT52C4V3 --: 4.3V zener in SOD-123 with similar tolerance and power rating, widely available and pin-compatible.
  • MMSZ4686T1G --: Same MMSZ family but different voltage variant; check voltage match before use as a 4.3V substitute.
  • 1N4731A --: 4.3V 1W zener in DO-41 axial package; electrically suitable but requires through-hole layout change.
  • DDZ4V3B --: 4.3V zener in SOD-123 with comparable tolerance and power dissipation, suitable drop-in replacement.

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