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MMBZ5248B

Surface nount zener diode. 350 mW. Nominal zen. Vltg @ Izt Vz 18.0 V. Test current 7.0 mA.

Partnumber Manufacturer Quantity Availability
MMBZ5248B 3000 In Stock

Description and Introduction

Surface nount zener diode. 350 mW. Nominal zen. Vltg @ Izt Vz 18.0 V. Test current 7.0 mA. # Introduction to the MMBZ5248B Zener Diode  

The **MMBZ5248B** is a surface-mount Zener diode designed for voltage regulation and protection in electronic circuits. As part of the **SOD-123** package family, it offers a compact footprint, making it suitable for space-constrained applications such as portable devices, power supplies, and automotive electronics.  

This component features a **5.1V nominal Zener voltage (Vz)** with a tight tolerance, ensuring stable voltage clamping and precise regulation. It is capable of dissipating up to **500mW of power**, providing reliable performance in low-power circuits. The MMBZ5248B is optimized for **reverse breakdown operation**, making it ideal for overvoltage protection, voltage reference circuits, and signal conditioning.  

Key characteristics include a **low dynamic impedance**, which enhances voltage stability under varying load conditions, and a **fast response time**, ensuring effective transient suppression. Its small form factor and lead-free construction comply with modern environmental and manufacturing standards.  

Engineers often select the MMBZ5248B for its **consistent performance**, durability, and ease of integration into automated assembly processes. Whether used in consumer electronics, industrial controls, or telecommunications, this Zener diode provides a cost-effective solution for maintaining circuit integrity under voltage fluctuations.  

For detailed specifications, designers should consult the component’s datasheet to ensure proper implementation based on operating conditions such as temperature, current, and power dissipation requirements.

Application Scenarios & Design Considerations

Surface nount zener diode. 350 mW. Nominal zen. Vltg @ Izt Vz 18.0 V. Test current 7.0 mA.

Alternative Part Number

  • BZX84C18 --: 18V zener in SOT-23 with similar tolerance and power rating, widely available and a common cross for MMBZ5248B.
  • 1N5248B --: Through-hole 18V zener with the same 5% tolerance class; suitable when board space allows axial mounting.
  • MMSZ5248B --: SOD-123 18V zener with comparable electrical characteristics, offering a different package option for layout flexibility.

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