BZM55B43-TR

Single Zener Diodes Overview

The BZM55B43-TR is a single-channel Zener diode from the Vishay BZM55 series, designed for voltage regulation in surface-mount applications. It features a nominal Zener voltage of 43 V with a tight tolerance of ±2%. The device operates within a test current range of 2.5 mA to 5 mA and dissipates up to 500 mW of power. Packaged in the compact MicroMELF (SOD-80) form factor, it supports both reflow and wave soldering processes. The component is qualified to AEC-Q101 standards for automotive reliability and complies with RoHS directives.

Single Zener Diodes Feature Summary

• Hermetically sealed construction ensures high stability and low reverse leakage current
• Very sharp reverse characteristic provides precise voltage clamping performance
• Low noise operation suitable for sensitive signal conditioning circuits
• Automotive-grade qualification meets rigorous reliability requirements

Single Zener Diodes Applications

• Voltage stabilization in electronic circuits
• Reference voltage generation for analog systems
• Overvoltage protection for sensitive components

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging quantity and reel specifications. Ensure the selected variant matches the required tape width and units per reel for automated assembly compatibility. Confirm compliance certifications such as RoHS and material categorization prior to final procurement decisions.

Single Zener Diodes Selection Notes

Select this component when a stable 43 V reference is required in a space-constrained surface-mount design. The BZM55B43-TR offers tighter voltage tolerance compared to standard C-series devices. Consider the thermal resistance characteristics and maximum junction temperature limits during circuit layout to ensure reliable operation under varying ambient conditions.

Single Zener Diodes Part Context

This part belongs to the BZM55 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series utilizes the MicroMELF package, which provides electrical data identical to through-hole counterparts while saving board space. The BZM55B43-TR specifically denotes the 43 V nominal voltage variant with B-tolerance packaging.

Single Zener Diodes Replacement Considerations

The datasheet indicates that electrical data is identical to the BZT55..series and TZM..series devices. These alternative part numbers may serve as functional substitutes if pinout and package dimensions are compatible with the existing design constraints.