BZX84B43-E3-18

Single Zener Diodes Overview

The BZX84B43-E3-18 is a silicon planar Zener diode from Vishay Semiconductors, designed for surface-mount applications in the SOT-23 package. It provides a nominal Zener voltage of 43 V with a tight tolerance of ±2%. The device operates at a test current of 2 mA and dissipates up to 500 mW of power. Key electrical characteristics include a maximum reverse leakage current of 0.05 µA and a dynamic resistance of 150 Ω at 1 kHz. It functions within an operating temperature range of -55 °C to +150 °C.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for robust performance
• Offers high precision with ±2% voltage tolerance
• Provides ESD protection exceeding 8 kV via human body model

Single Zener Diodes Applications

• Voltage reference circuits requiring stable potential
• Overvoltage protection stages in electronic systems
• Clamping applications for signal lines

Single Zener Diodes Procurement Notes

Verify that the ordering code matches the specific voltage and tolerance requirements. Confirm the suffix indicates the correct reel quantity and tape width. Ensure compliance with RoHS directives if required by the design specifications. Cross-reference the datasheet revision date to confirm the validity of the electrical parameters provided.

Single Zener Diodes Selection Notes

Select this component when a precise 43 V regulation point is necessary. The ±2% tolerance makes it suitable for tighter circuit constraints compared to standard grades. Consider the low leakage current for high-impedance applications. Verify thermal management capabilities based on the expected ambient temperature and board layout.

Single Zener Diodes Part Context

This part belongs to the BZX84 series of small signal Zener diodes manufactured by Vishay. The series covers a wide range of voltages from 2.2 V to 75 V. The 'B' designation specifically denotes the tighter ±2% tolerance grade. The 'E3' suffix confirms RoHS compliance for commercial use.

Single Zener Diodes Replacement Considerations

Substitutes must match the 43 V nominal voltage and ±2% tolerance. Compatible packages include SOT-23. Verify that replacement parts meet the same thermal and electrical limits.