Nexperia USA Inc. BZX84J-B2V4,115

Overview

BZX84J-B2V4,115 from Nexperia is a 2.4 V ±2 % tolerance Zener voltage regulator diode in SOD323F (SC-90) package, rated for 550 mW total power dissipation and AEC-Q101 qualified for automotive use. It delivers stable reverse breakdown at 2.4 V with low differential resistance (≤500 Ω at I_Z = 5 mA), 1.1 V forward voltage at 100 mA, and supports non-repetitive surge up to 12 A (100 µs square wave). It serves as a precision reference or overvoltage clamp in low-power analog supply rails.

For engineers reviewing the BZX84J-B2V4,115 datasheet, BZX84J-B2V4,115 pinout, BZX84J-B2V4,115 application, or BZX84J-B2V4,115 equivalent, key selection criteria include its ±2 % voltage tolerance, 230 K/W junction-to-ambient thermal resistance on FR4, cathode-marked SOD323F footprint, and AEC-Q101 qualification for under-hood sensor biasing and ECU voltage monitoring.

Technical Context

This Zener diode operates in reverse-biased breakdown mode to maintain a stable 2.4 V reference across load variations and temperature shifts. Its differential resistance of ≤500 Ω at 5 mA ensures minimal output voltage drift under current changes, while the negative temperature coefficient (−3.5 to 0 mV/K) enables predictable thermal behavior in ambient ranges from −55 °C to +150 °C.

Designed for surface-mount reliability, it uses a planar silicon process with metallization optimized for low parasitic capacitance (450 pF at 0 V) and robust surge handling. The SOD323F package's 0.65 mm lead pitch and 1.15 mm body width support high-density PCB layouts without compromising thermal performance or mechanical stability during reflow.

Key Specifications

Pinout & Package

The BZX84J-B2V4,115 is housed in a SOD323F (SC-90) plastic surface-mount package measuring 1.8 × 1.35 × 0.65 mm, with gull-wing leads and a cathode-marking bar on the top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84J-B2V4,115, the BZX84-C2V4,115 trades precision for cost in non-critical clamping, while MMSZ4678T1G sacrifices power handling and package size for legacy footprint reuse-neither matches the combination of AEC-Q101, ±2 %, and SOD323F density.

Availability

BZX84J-B2V4,115 is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial analog reference generation, and USB port overvoltage protection requiring stable component supply with AEC-Q101 compliance and tight voltage tolerance.

Supply support for BZX84J-B2V4,115 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 focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

The BZX84J series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for robust voltage regulation in harsh automotive environments and space-constrained industrial electronics.

FAQ

What is the maximum continuous reverse current for BZX84J-B2V4,115 at 25 °C?

The device has no specified maximum continuous reverse current; instead, it is rated by total power dissipation (550 mW at T_amb ≤ 25 °C). At 2.4 V Zener voltage, this corresponds to a maximum steady-state Zener current of approximately 229 mA, assuming no additional thermal derating beyond ambient conditions.

Does BZX84J-B2V4,115 support reflow soldering only, or can it be hand-soldered?

Nexperia specifies reflow soldering as the only recommended method due to the SOD323F package's thermal sensitivity and fine pitch. Hand-soldering risks thermal damage to the die or delamination; if unavoidable, use a temperature-controlled iron (<350 °C tip), dwell time <3 seconds per pad, and verified thermal profiling per J-STD-020.

How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?

With a typical SZ of −3.5 to 0 mV/K, the Zener voltage shifts by approximately −0.25 V to 0 V across that range. For a 2.4 V nominal part, this yields a worst-case drift of ±10.4 %, but actual system-level error is mitigated by using the diode within its specified test current (5 mA) and leveraging its low r_diff to minimize load-induced variation.

Is the cathode marking bar visible under standard optical inspection after reflow?

Yes-the cathode marking bar is a laser-etched or molded feature on the top surface of the SOD323F package and remains clearly visible post-reflow under 10× magnification. Its position aligns with Pin 1 per JEDEC MO-203-AB, enabling automated optical inspection (AOI) verification during SMT assembly.