BZX84W-B43F

Single Zener Diodes Overview

The Nexperia BZX84W-B43F is a general-purpose Zener diode housed in a SOT323 (SC-70) leadless surface-mount package. It provides a nominal working voltage of 43 V with a ±2% tolerance series designation. The device features a total power dissipation of 275 mW and operates within an ambient temperature range of -55 °C to +150 °C. Key electrical characteristics include a maximum forward voltage of 0.9 V at 10 mA, a differential resistance of 375 Ω at 5 mA, and a typical temperature coefficient of 41.2 mV/K.

Single Zener Diodes Feature Summary

• Offers high precision regulation through a narrow ±2% voltage tolerance series.
• Designed for compact circuit layouts utilizing the small SOT323 leadless plastic package.
• Capable of handling non-repetitive peak reverse power dissipation pulses up to 40 W.

Single Zener Diodes Applications

• General voltage regulation functions
• High-frequency applications

Single Zener Diodes Procurement Notes

Verify that the specific suffix 'F' corresponds to the required packaging configuration, as standard datasheets may list generic reel options. Confirm RoHS compliance status and ensure the component meets the non-automotive qualification requirements specified in the product data sheet revision history before finalizing procurement specifications.

Single Zener Diodes Selection Notes

Select this component when a precise 43 V reference is required in space-constrained designs. The ±2% tolerance ensures tight voltage accuracy compared to standard 5% variants. Ensure the application current remains near the 5 mA test condition to maintain optimal temperature coefficient performance and differential resistance values.

Single Zener Diodes Part Context

This part belongs to the BZX84W series, which comprises 74 types covering nominal voltages from 2.4 V to 75 V. The series utilizes the SC-70 plastic surface-mounted package with three leads. The 'B' prefix indicates the ±2% tolerance variant, distinguishing it from the 'C' series which offers ±5% tolerance.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same series include BZX84W-B43X. Other Nexperia Zener diodes in the SOT323 package may serve as alternatives if voltage or tolerance differences are acceptable.