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MMBZ5254B from FAIRCHILD,Fairchild Semiconductor

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MMBZ5254B

Manufacturer: FAIRCHILD, MOTO

Surface nount zener diode. 350 mW. Nominal zen. Vltg @ Izt Vz 27.0 V. Test current 4.6 mA.

Partnumber Manufacturer Quantity Availability
MMBZ5254B FAIRCHILD, MOTO 29323 In Stock

Description and Introduction

Surface nount zener diode. 350 mW. Nominal zen. Vltg @ Izt Vz 27.0 V. Test current 4.6 mA. # Introduction to the MMBZ5254B Zener Diode  

The **MMBZ5254B** is a surface-mount Zener diode designed for voltage regulation and protection in electronic circuits. As part of the small-signal diode family, it provides precise voltage clamping, making it suitable for applications requiring stable reference voltages or transient suppression.  

This component features a **5.6V nominal Zener voltage (Vz)** with a tight tolerance, ensuring reliable performance in voltage stabilization tasks. Its compact **SOD-123 package** allows for efficient PCB space utilization, making it ideal for modern, high-density designs. With a **power dissipation rating of 350mW**, the MMBZ5254B is well-suited for low-power applications such as voltage references, signal conditioning, and overvoltage protection in portable devices, sensors, and communication systems.  

Key characteristics of the MMBZ5254B include low leakage current and a sharp breakdown voltage, which enhance its efficiency in precision circuits. Additionally, its robust construction ensures stability under varying environmental conditions, contributing to long-term reliability.  

Engineers often integrate the MMBZ5254B into power management circuits, where maintaining a consistent voltage is critical. Its fast response time also makes it effective in protecting sensitive components from voltage spikes.  

For designers seeking a dependable Zener diode in a compact form factor, the MMBZ5254B offers a balance of performance, accuracy, and durability, making it a practical choice for a wide range of electronic applications.

Application Scenarios & Design Considerations

Surface nount zener diode. 350 mW. Nominal zen. Vltg @ Izt Vz 27.0 V. Test current 4.6 mA.

Alternative Part Number

  • BZX84C27 --: 27V zener in SOT-23 with similar power rating and tolerance, widely available and pin-compatible.
  • 1N5254B --: Axial-lead 27V zener with the same voltage and tolerance class, suitable if through-hole mounting is acceptable.
  • CZMM27 --: SOT-23 27V zener diode offering comparable electrical characteristics as a cross-manufacturer alternative.
  • CZ27C --: 27V SOT-23 zener diode offering comparable voltage and power characteristics as a functional substitute.

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