MMBZ5252ELT1G

Single Zener Diodes Overview

The onsemi MMBZ5252ELT1G is a single Zener voltage regulator diode designed for surface-mount applications. It features a nominal Zener voltage of 51 V with a tolerance of ±5%. The device operates within a power dissipation rating of 225 mW and is housed in a compact SOT-23 package. Electrical characteristics include a maximum reverse leakage current of 5 µA, a Zener impedance of 17 Ω at the test current of 20 mA, and a forward voltage of 900 mV. The component supports an operating temperature range from -65°C to +150°C.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation using a single Zener diode configuration in a small form factor.
• Engineered for high-density printed circuit board assembly with optimized automated placement compatibility.
• Offers robust electrostatic discharge protection rated at Class 3 (>16 kV) per the human body model.

Single Zener Diodes Applications

• Voltage reference circuits in portable electronic devices
• Overvoltage protection stages in cellular phones
• Clamping applications in handheld portable equipment

Single Zener Diodes Procurement Notes

Verify the specific suffix ELT1G against the official datasheet to confirm the 5% tolerance and 225 mW rating. Ensure the ordering part number matches the exact electrical specifications required for the design. Confirm RoHS compliance status through the manufacturer's documentation before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when space constraints require a surface-mount Zener diode with a 51 V regulation point. The SOT-23 package is suitable for high-density layouts where standard axial leads are impractical. Consider the 225 mW power dissipation limit and thermal derating requirements above 25°C during circuit design.

Single Zener Diodes Part Context

This device belongs to the MMBZ52xxELT1G series of Zener voltage regulators manufactured by onsemi. The series utilizes void-free, transfer-molded thermosetting plastic cases with corrosion-resistant finishes. These components are Pb-free and designed to meet UL 94 V-0 flammability ratings for safety compliance.

Single Zener Diodes Replacement Considerations

Cross-reference with other MMBZ52xxELT1G variants for different voltage levels. Verify that substitute parts maintain the same SOT-23 footprint and 225 mW power rating. Check if alternative manufacturers offer equivalent Zener diodes with matching 51 V nominal voltage and ±5% tolerance.