BZB984-C3V9,115

Overview

The Nexperia BZB984-C3V9,115 is a voltage regulator double diode housed in an SOT663 ultra-small plastic surface-mount package. It integrates two independent Zener diodes sharing a common anode (Pin 3), with cathodes on Pins 1 and 2. The nominal Zener voltage is 3.9 V with approximately ±5% tolerance. Total power dissipation is rated at 425 mW when both diodes are loaded, or 265 mW for single-diode operation. The device supports a junction temperature range of -55 °C to +150 °C and features a maximum forward voltage of 0.9 V at 10 mA.

Feature Summary

• Dual Zener configuration within a compact SOT663 package
• Common anode topology for simplified circuit design
• High thermal stability across extended temperature ranges

Applications

• General regulation functions
• ESD protection circuits
• Surge protection applications

Procurement Notes

Verify the specific ordering suffix against official Nexperia documentation to confirm packaging details such as reel quantity or tape specifications. Confirm that the component meets non-automotive qualification standards, as this series lacks AEC-Q101 certification. Ensure compatibility with reflow soldering processes recommended for the SOT663 footprint.

Selection Notes

Select this component when space-constrained designs require dual voltage reference points or bidirectional clamping capabilities. The common anode structure simplifies routing compared to discrete dual packages. Verify that the required Zener voltage falls within the E24 range provided by the BZB984 series and that the 425 mW total dissipation rating suits the thermal environment.

Part Context

This part belongs to the BZB984 series of low-power voltage regulator double diodes. The series offers various nominal working voltages from 2.4 V to 15 V in the same SOT663 package. The 'C' designation indicates the approximate ±5% tolerance variant, while the '115' suffix typically denotes standard tape-and-reel packaging for automated assembly.

Replacement Considerations

Direct replacements must match the SOT663 pinout (common anode) and voltage rating. Other manufacturers offering dual Zener diodes in SOT663 or equivalent small outlines may serve as alternatives if electrical parameters align. Verify that any substitute maintains the 425 mW total power dissipation capability.