BZG03B18-HM3-18

Single Zener Diodes Overview

The BZG03B18-HM3-18 is a single Zener diode manufactured by Vishay General Semiconductor - Diodes Division. It features a nominal Zener voltage of 18 V with a tolerance of ±2%. The device supports a maximum power dissipation of 1.25 W and operates in the DO-214AC (SMA) surface-mount package. Key electrical parameters include a maximum Zener impedance (Zzt) of 15 Ohms, a reverse leakage current of 1 µA at 13 V, and a forward voltage of 1.2 V at 500 mA. It is qualified to AEC-Q101 standards for automotive applications and has a maximum junction temperature rating of 150°C.

Single Zener Diodes Feature Summary

• Automotive-grade qualification compliant with AEC-Q101 standards
• High thermal stability with a maximum junction temperature of 150°C
• Precision voltage regulation with ±2% tolerance on nominal Zener voltage
• Surface-mount construction in the compact DO-214AC (SMA) package

Single Zener Diodes Applications

• Voltage reference circuits in automotive electronics
• Overvoltage protection stages in vehicle control modules
• Clamping applications in high-reliability industrial systems

Single Zener Diodes Procurement Notes

Verify the specific suffix against official documentation, as ordering codes may indicate variations in packaging or manufacturing origin that do not alter electrical function. Confirm component status, as this part number may be subject to discontinuation notices. Cross-reference with active equivalents like the BZG03B18-M3 series if supply constraints exist. Ensure compliance with RoHS3 directives and check for any recent PCN updates regarding assembly or material changes before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a precise 18 V regulation point is required within an SMA footprint. The ±2% tolerance makes it suitable for tight voltage window applications compared to standard 5% or 10% variants. Consider the 15 Ohm impedance for low-noise reference needs. Verify that the 1.25 W power rating aligns with the expected thermal environment and duty cycle of the target circuit design.

Single Zener Diodes Part Context

This device belongs to the BZG03B-M series of single Zener diodes designed for general-purpose and automotive use. It shares the DO-214AC package form factor with other Vishay SMD diodes but offers specific voltage and tolerance characteristics. The series is characterized by its robustness and compliance with automotive quality standards, distinguishing it from standard commercial-grade counterparts.

Single Zener Diodes Replacement Considerations

Publicly confirmed substitute part numbers include BZG03B18-HM3_A-18, BZG03B18-M3_A-08, and BZG03B18-M3_A-18. These alternatives are listed as parameter-equivalent replacements by the manufacturer.