MMSZ5243B

Single Zener Diodes Overview

The MMSZ5243B is a single-channel Zener diode manufactured by SMC Diode Solutions, designed for surface-mount applications. It features a nominal Zener voltage of 13 V with a tolerance of ±5%. The device operates within a power dissipation rating of 500 mW and utilizes the SOD-123 package. Key electrical characteristics include a maximum reverse leakage current of 500 nA and a Zener impedance of 13 Ohms at a test current of 9.5 mA. It supports an operating temperature range from -65°C to +150°C.

Single Zener Diodes Feature Summary

• Planar die construction for robust performance in surface-mount environments
• Ultra-small SOD-123 package optimized for automated assembly processes
• General-purpose medium current regulation capability

Single Zener Diodes Applications

• Voltage reference circuits requiring stable 13 V regulation
• Overvoltage protection in low-power electronic systems
• Clamping applications in signal conditioning paths

Single Zener Diodes Procurement Notes

Verify the specific manufacturer designation when sourcing, as the MMSZ5243B part number is utilized across multiple semiconductor producers including SMC Diode Solutions, Vishay, and others. Confirm that the component meets required RoHS compliance standards and matches the specified SOD-123 footprint dimensions. Ensure the selected variant aligns with the intended thermal management requirements given the 500 mW power dissipation limit.

Single Zener Diodes Selection Notes

Select this component for designs requiring a precise 13 V reference point in compact PCB layouts. The SOD-123 form factor offers space efficiency compared to through-hole alternatives. Consider the 5% voltage tolerance and 13 Ohm impedance when designing precision regulation loops. Verify compatibility with automated pick-and-place equipment due to the small surface-mount package geometry.

Single Zener Diodes Part Context

This component belongs to the MMSZ524x series of silicon Zener diodes. The series is characterized by planar die construction and ultra-small surface-mount packaging. These devices are engineered for general-purpose voltage regulation and protection tasks where board space is limited. The MMSZ5243B specifically denotes the 13 V variant within this standardized product line.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers' MMSZ5243B parts such as those from Vishay or Panjit. Verify pinout compatibility and package dimensions (SOD-123) before substitution. Ensure equivalent electrical parameters, particularly the 13 V Zener voltage and 500 mW power rating, are maintained in any alternative selection.