BZB84-B51,215

Overview

The Nexperia BZB84-B51,215 is a dual common anode voltage regulator diode housed in a compact SOT-23 (TO-236AB) surface-mount package. It features a nominal Zener voltage of 51 V with a tight ±2 % tolerance and a maximum power dissipation of 300 mW. The device operates within a temperature range of -55 °C to +150 °C, exhibiting a typical voltage temperature coefficient of 51 mV/K. Key electrical characteristics include a test current of 5 mA, a maximum reverse leakage current of 50 nA, and a Zener impedance of 180 Ω.

Feature Summary

• Dual common anode configuration for efficient circuit layout
• High thermal stability with extended operating temperature range up to 150 °C
• Compact SOT-23 package suitable for high-density surface-mount applications

Applications

• General voltage regulation functions
• Reference voltage generation in precision circuits
• Over-voltage protection stages

Procurement Notes

Verify the specific suffix

Selection Notes

Select this component when a dual Zener configuration is required in a minimal footprint. The 51 V rating suits mid-range reference applications. Ensure the 300 mW power dissipation capability aligns with the thermal design constraints of the target PCB area.

Part Context

This part belongs to the BZB84 series, which expands the standard BZX84 single-diode lineup by offering dual common anode options. This series maintains the same small SOT-23 form factor while providing two regulated junctions in one package, reducing board space compared to using two separate single diodes.

Replacement Considerations

Direct functional substitutes include other BZB84-B51 variants from different manufacturers or equivalent dual common anode Zener diodes in SOT-23 packages with matching 51 V ratings and 300 mW power dissipation.