BZB84-B68-QR

Overview

The Nexperia BZB84-B68-QR is a dual voltage regulator diode in the BZB84-Q series, housed in a SOT-23 surface-mount package. It features a dual common anode configuration with two independent cathodes. The device provides a nominal Zener voltage of 68 V with a ±2% tolerance (Series B). Key electrical parameters include a total power dissipation of 300 mW and a non-repetitive peak reverse power dissipation of 40 W per diode. Operating characteristics specify a maximum reverse current of 475 μA at 2 mA test current, a differential resistance of 240 Ω, and a temperature coefficient ranging from 47.6 to 65.6 mV/K. The component is qualified under AEC-Q101 for automotive applications.

Feature Summary

• Dual common anode configuration enabling compact circuit designs
• Automotive qualification compliant with AEC-Q101 standards
• High precision voltage regulation with ±2% tolerance option

Applications

• General voltage regulation functions
• Automotive electronic circuits requiring high-density packaging

Procurement Notes

Verify the specific ordering suffix matches the required tape-and-reel quantity. Confirm that the B-series tolerance aligns with design requirements. Ensure the SOT-23 footprint dimensions are compatible with the target PCB layout. Check for any recent product change notices affecting marking codes or thermal characteristics.

Selection Notes

Select this component when a dual-diode solution is needed to save board space compared to single discrete units. The B-series offers tighter voltage accuracy than the C-series. Consider the positive temperature coefficient at 68 V when designing for wide temperature ranges. Verify that the 300 mW total dissipation rating suffices for the expected operating conditions.

Part Context

This part belongs to the BZB84-Q series, which expands Nexperia's portfolio of small SMD Zener diodes. The series covers nominal voltages from 2.4 V to 75 V. The BZB84-B68-QR specifically addresses the need for stable reference voltages in the higher voltage range within the standard SOT-23 form factor used across consumer and industrial electronics.

Replacement Considerations

Direct pin-compatible substitutes within the same series include BZB84-C68-QR, which shares the package but offers approximately ±5% voltage tolerance. Other BZB84-Q variants may be considered if different voltage levels are acceptable.