Nexperia USA Inc. BZB984-C4V7,115

Overview

BZB984-C4V7,115 from Nexperia is a dual Zener voltage regulator diode in SOT663 package, configured as two cathodes (K1, K2) sharing a common anode (CA), with nominal 4.7 V regulation at 5 mA, ±5% tolerance, and 425 mW total power dissipation when both diodes are loaded on FR4 PCB. It serves low-power voltage reference and bidirectional ESD clamping in space-constrained consumer and industrial interfaces.

For engineers reviewing the BZB984-C4V7,115 datasheet, BZB984-C4V7,115 pinout, BZB984-C4V7,115 application, or BZB984-C4V7,115 equivalent, key selection factors include its dual-cathode common-anode topology, 4.7 V Zener voltage with -1.2 mV/K temperature coefficient at 5 mA, 3 μA reverse current at 1 V, and 425 mW thermal limit under standard mounting conditions.

Technical Context

This double Zener diode integrates two independent regulation elements in a single ultra-small SOT663 package, enabling compact dual-rail referencing or symmetrical transient suppression. Its common-anode configuration supports parallel or anti-parallel biasing without external interconnects.

The device operates within a junction temperature range of -55 °C to +150 °C and exhibits 425 mW total power dissipation with both diodes active on FR4 PCB. Thermal resistance from junction to ambient is 294 K/W (2-diode load), and differential resistance is 425 Ω max at IZ = 5 mA.

Key Specifications

Pinout & Package

Package: SOT663 - ultra-small flat plastic surface-mount package (1.7 × 1.5 × 0.5 mm), optimized for high-density PCB layouts and automated reflow assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-Zener voltage regulation applications.

Compared with DMN2016LFG-7 and BZX84-C4V7,215, the BZB984-C4V7,115 uniquely delivers dual 4.7 V regulation in one SOT663 package with shared anode-reducing component count by 50%, minimizing parasitic inductance in ESD paths, and enabling tighter thermal coupling between regulation elements.

Availability

BZB984-C4V7,115 is available at Aetrix Electronics and suitable for USB interface protection, low-voltage sensor biasing, and industrial IO module voltage clamp requiring stable component supply, consistent parametric performance, and SMT-compatible packaging.

Supply support for BZB984-C4V7,115 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices, with leadership in automotive-grade and industrial-standard components.

The BZB984 series belongs to Nexperia's precision Zener regulator portfolio, engineered specifically for space-constrained, low-power voltage reference and bidirectional ESD protection in consumer, computing, and industrial interfaces.

FAQ

What is the maximum continuous reverse current the BZB984-C4V7,115 can sustain at 4.7 V?

The device is rated for 200 mA maximum forward current, but as a Zener regulator, it operates in reverse breakdown. At VZ = 4.7 V, the maximum continuous reverse current is limited by power dissipation: 425 mW ÷ 4.7 V ≈ 90 mA with both diodes active on FR4 PCB. Derating applies above 25 °C ambient.

Can the BZB984-C4V7,115 be used for bidirectional TVS protection?

Yes - its dual-cathode common-anode structure allows direct implementation of bidirectional clamping: connect K1 and K2 to protected lines, and CA to ground. This provides symmetrical ±4.7 V clamping with matched Zener characteristics, validated per IEC 61000-4-2 up to 8 kV contact discharge.

How does the -1.2 mV/K temperature coefficient affect regulation accuracy over temperature?

At IZ = 5 mA, the coefficient means VZ shifts -1.2 mV per °C rise. Over a -40 °C to +85 °C range (125 °C ΔT), total drift is -150 mV, or -3.2% of 4.7 V. This is within the ±5% initial tolerance, making it suitable for non-precision references where absolute accuracy is secondary to stability and size.

Is the SOT663 package lead-free and RoHS compliant?

Yes - Nexperia confirms the BZB984-C4V7,115 meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The SOT663 package uses matte tin (Sn) termination with lead-free solder compatibility, and JEDEC J-STD-020 moisture sensitivity level is MSL3.