BZX84-B68-QR

Single Zener Diodes Overview

The Nexperia BZX84-B68-QR is a low-power voltage regulator diode in the BZX84-Q series, housed in an SOT-23 (TO-236AB) surface-mount package. It provides a nominal Zener voltage of 68 V with a ±5% tolerance. The device features a total power dissipation of 250 mW and operates within a junction temperature range of -55 °C to +150 °C. Key electrical characteristics include a maximum reverse current of 240 µA at 79.8 V, a differential resistance of 475 Ω at 2 mA test current, and a typical temperature coefficient of 52.5 mV/K.

Single Zener Diodes Feature Summary

• Qualified for automotive applications according to AEC-Q101 standards
• Provides stable voltage regulation across a wide operating temperature range
• Compact SOT-23 plastic surface-mounted device package

Single Zener Diodes Applications

• General regulation functions

Single Zener Diodes Procurement Notes

Verify the specific suffix 'QR' against official Nexperia documentation to confirm reel packaging specifications and tape-and-reel dimensions. Ensure the component matches the BZX84-Q series product data sheet revision dated September 29, 2021. Confirm that the ±5% tolerance variant aligns with the design requirements for the intended circuit application.

Single Zener Diodes Selection Notes

Select this component when a 68 V reference is required in space-constrained designs utilizing SOT-23 footprints. The ±5% tolerance offers cost-effective regulation where tighter precision is unnecessary. Verify that the thermal resistance and power dissipation limits are sufficient for the expected ambient conditions and current loads in the target application.

Single Zener Diodes Part Context

This part belongs to the BZX84-Q series, which includes 37 breakdown voltages ranging from 2.4 V to 75 V. The series is available in three tolerance grades: ±1% (BZX84-A), ±2% (BZX84-B), and approximately ±5% (BZX84-C). All variants share the same SOT-23 package and automotive qualification profile.

Single Zener Diodes Replacement Considerations

Compatible substitutes within the same family include BZX84-C68-QR and BZX84-A68-QR, provided the tolerance requirements match the circuit design.