MMSZ5248BT1

Single Zener Diodes Overview

The onsemi MMSZ5248BT1G is a single-channel Zener voltage regulator diode housed in an SOD-123 surface-mount package. It provides a nominal reverse Zener voltage of 18 V with a ±5% tolerance, tested at a current of 7.0 mA. The device supports a maximum power dissipation of 500 mW and exhibits a maximum dynamic impedance of 21 Ω at the test current. Operating temperatures range from -55°C to +150°C, with a maximum reverse leakage current of 0.1 μA at 14 V.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation within a wide reverse voltage range using a compact surface-mount plastic case.
• Designed for optimal automated board assembly processes with high-density footprint compatibility.
• Features robust electrostatic discharge protection rated above 16 kV per the human body model.

Single Zener Diodes Applications

• General-purpose medium current voltage regulation circuits
• High-density electronic assemblies requiring small form factors
• Automotive applications requiring unique site control (SZ prefix variants)

Single Zener Diodes Procurement Notes

Verify the specific suffix against the datasheet to confirm tolerance and packaging. The 'B' suffix indicates a standard ±5% tolerance. Confirm whether the required variant includes the 'SZ' prefix for automotive qualification or standard tape-and-reel quantities. Ensure the ordering number matches the exact voltage and package style needed for the design.

Single Zener Diodes Selection Notes

Select this component when a precise 18 V reference is required in a space-constrained layout. The SOD-123 package offers a thermal equilibrium rating suitable for general-purpose applications. Consider the SZ prefix if the application demands AEC-Q101 qualification and PPAP capability. Verify that the operating temperature range aligns with the system's environmental constraints.

Single Zener Diodes Part Context

This device belongs to the MMSZ52xxxT1G series, which offers a broad spectrum of Zener voltages from 2.4 V to 110 V. All devices in this family share the same SOD-123 mechanical outline and 500 mW power rating. The series serves as a direct alternative to leadless 34-package styles while maintaining consistent electrical characteristics across the voltage range.

Single Zener Diodes Replacement Considerations

Direct substitutes include other MMSZ5248BT1G units from different manufacturers offering identical 18 V, 500 mW, SOD-123 specifications. Cross-reference with MMSZ5248BS or MMSZ5248B-H for equivalent electrical performance in the same package type.