MMBZ5221ELT1

Single Zener Diodes Overview

The MMBZ5221ELT1G is a single Zener diode manufactured by onsemi, designed for voltage regulation and reference applications. It features a nominal Zener voltage of 5.1 V with a tolerance of 5%. The device operates within a power dissipation rating of 225 mW at ambient conditions. It utilizes an SOT-23-3 surface-mount package, measuring 2.9 mm in length, 1.3 mm in width, and 1 mm in height. The component supports a maximum operating temperature of +150 °C and a minimum of -65 °C. Key electrical characteristics include a maximum reverse leakage current of 5 µA and a Zener impedance of 17 Ohms at a test current of 20 mA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a single Zener junction structure.
• Optimized for automated assembly processes via compact SMD packaging.
• Capable of operation across extended industrial temperature ranges.

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Single Zener Diodes Procurement Notes

Verify the specific suffix (e.g., LT1G) to confirm tape-and-reel packaging and lead-free compliance status. Ensure the ordering part number matches the required Zener voltage tolerance and power dissipation ratings for the target application environment. Cross-reference datasheet revisions for any updates to mechanical dimensions or thermal characteristics before finalizing procurement specifications.

Single Zener Diodes Selection Notes

Select this component when a precise 5.1 V reference is required in space-constrained designs. The SOT-23-3 package offers a small footprint suitable for high-density PCB layouts. Consider the 225 mW power rating and thermal resistance when determining heat dissipation requirements. Verify that the 5% voltage tolerance aligns with the circuit's accuracy needs compared to tighter tolerance alternatives.

Single Zener Diodes Part Context

This component belongs to the MMBZ5231E series of Zener diodes from onsemi. These devices are silicon planar Zener diodes intended for general-purpose voltage regulation. The series is characterized by low leakage current and fast switching capabilities, making them suitable for various signal processing and power management roles in consumer and industrial electronics.

Single Zener Diodes Replacement Considerations

Check for direct substitutes such as MMBZ5221BT-13 from Diodes Inc., ensuring identical voltage, package, and power ratings. Verify pinout compatibility and thermal performance metrics before substituting to maintain circuit integrity.