Nexperia USA Inc. BZB984-C2V7,115

Overview

BZB984-C2V7,115 from Nexperia is a dual Zener voltage regulator diode in SOT663 package with nominal 2.7 V working voltage (±5% tolerance), 300 Ω typical differential resistance at I_Z = 5 mA, and 75 μA maximum reverse current at V_R = 2.2 V. It delivers low-power regulation and ESD protection in space-constrained consumer and industrial PCBs.

For engineers reviewing the BZB984-C2V7,115 datasheet, BZB984-C2V7,115 pinout, BZB984-C2V7,115 application, or BZB984-C2V7,115 equivalent, this device serves as a compact dual-cathode common-anode Zener pair for precision low-voltage clamping, rail-to-rail voltage reference sharing, and bidirectional transient suppression in 2.7 V logic interfaces and sensor signal conditioning circuits.

Technical Context

This double Zener diode integrates two independent 2.7 V Zener elements sharing a common anode terminal, enabling symmetrical clamping of differential signals or dual-rail referencing from a single footprint. Its thermal resistance R_th(j-sp) is 125 K/W (2 diodes loaded), supporting stable operation up to 150 °C junction temperature.

The device exhibits a negative temperature coefficient of −1.4 mV/K at I_Z = 5 mA, ensuring predictable drift behavior in temperature-sensitive bias networks. With 425 mW total power dissipation capability on FR4 PCB and 0.9 V forward voltage at 10 mA, it supports both regulation and low-loss forward conduction paths.

Key Specifications

Pinout & Package

SOT663 ultra-small flat plastic SMD package (1.7 × 1.5 × 0.5 mm) with three terminals: two cathodes (K1, K2) and one shared anode (CA), optimized for high-density routing and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5221BS and BZX84-C2V7, the BZB984-C2V7,115 uniquely integrates two matched 2.7 V Zeners in one SOT663 package with shared anode - reducing PCB area by 40%, eliminating inter-device parameter mismatch, and enabling true differential clamping without layout compromises.

Availability

BZB984-C2V7,115 is available at Aetrix Electronics and suitable for USB-C interface protection, low-voltage sensor biasing, and industrial 2-wire transmitter reference applications requiring stable component supply and long-term obsolescence management.

Supply support for BZB984-C2V7,115 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 logic, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for consumer, industrial, and communications markets.

The BZB984 series belongs to Nexperia's precision Zener regulator portfolio, engineered specifically for ultra-compact dual-diode regulation and ESD protection in space-constrained, low-voltage digital and mixed-signal systems.

FAQ

What is the maximum continuous power dissipation for BZB984-C2V7,115 when both diodes are active?

The BZB984-C2V7,115 has a total power dissipation limit of 425 mW when mounted on a standard FR4 PCB with single-sided copper and tin plating. This rating applies when both Zener diodes conduct simultaneously under steady-state DC or low-frequency conditions at ambient temperatures ≤25 °C.

Can BZB984-C2V7,115 be used for bidirectional ESD protection on a differential signal pair?

Yes - its common-anode dual-cathode configuration allows direct connection across differential lines (e.g., K1 to LINE+, K2 to LINE−, CA to GND), providing symmetrical ±2.7 V clamping with matched Zener characteristics and sub-nanosecond response to IEC 61000-4-2 transients.

How does the −1.4 mV/K temperature coefficient affect regulation accuracy over temperature?

At I_Z = 5 mA, the −1.4 mV/K coefficient causes a −14 mV shift over a 10 °C rise, resulting in ±0.52% V_Z drift from 25 °C to 85 °C. This is fully characterized in the datasheet and remains within system-level tolerances for most 2.7 V reference and clamp applications.

Is the SOT663 package compatible with standard reflow soldering profiles?

Yes - Nexperia specifies reflow soldering as the only recommended process for SOT663. The package supports JEDEC J-STD-020-compliant peak temperatures up to 260 °C, with thermal resistance data validated using standard FR4 footprints defined in Figure 10 of the datasheet.