Nexperia USA Inc. BZX884-B4V3,315

Overview

BZX884-B4V3,315 from Nexperia is a ±2 % tolerance Zener diode in SOD882 (DFN1006-2) package, rated for 4.3 V nominal regulation at 5 mA, with 250 mW total power dissipation and 350 Ω typical differential resistance. It serves as a precision voltage reference or shunt regulator in low-power analog circuits, ESD protection clamps, and high-frequency bias networks.

For engineers reviewing the BZX884-B4V3,315 datasheet, BZX884-B4V3,315 pinout, BZX884-B4V3,315 application, or BZX884-B4V3,315 equivalent, key selection criteria include Zener voltage tolerance (±2 %), ultra-small DFN1006-2 footprint, AEC-Q101 qualification, reverse leakage at VR = 1 V (≤3 µA), and thermal resistance (500 K/W).

Technical Context

This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying current loads. Its temperature coefficient of −1.7 mV/K at IZ = 5 mA enables predictable drift compensation in temperature-sensitive references.

The device exhibits low junction capacitance (350 pF at 0 V, f = 1 MHz) and fast ESD response due to its ultra-small geometry and low parasitic inductance. It supports non-repetitive peak reverse currents up to 6 A for 100 µs pulses, meeting IEC 61000-4-2 Level 4 requirements when properly implemented.

Key Specifications

Pinout & Package

SOD882 (DFN1006-2) is a leadless, surface-mount plastic package with two terminals and a cathode-marking bar on the top surface. The body measures 1.0 mm × 0.6 mm × 0.5 mm and is designed for reflow soldering only.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5225B and BZX84-C4V3, BZX884-B4V3,315 delivers superior voltage accuracy, automotive-grade reliability, and 70 % smaller PCB footprint-critical for next-generation compact, high-reliability designs.

Availability

BZX884-B4V3,315 is available at Aetrix Electronics and suitable for automotive sensor biasing, USB ESD protection, industrial PLC analog inputs, and IoT node voltage references requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for BZX884-B4V3,315 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 focus on efficiency, miniaturization, and automotive-grade quality.

The BZX884 series belongs to Nexperia's precision Zener diode product line, engineered specifically for space-constrained, high-reliability voltage regulation and ESD protection in automotive and industrial applications.

FAQ

What is the maximum reverse voltage this Zener can regulate continuously?

The BZX884-B4V3,315 regulates continuously at its nominal Zener voltage of 4.3 V, with absolute maximum reverse voltage limited by its 250 mW power rating and thermal resistance. At 25 °C ambient on standard FR4, sustained reverse current must remain below 58 mA to avoid exceeding Ptot. Derating is required above 25 °C per the 500 K/W Rth(j-a) value.

Is this device suitable for bidirectional ESD protection?

No-BZX884-B4V3,315 is a unidirectional Zener diode optimized for reverse-bias regulation. For bidirectional ESD protection, a dedicated TVS diode such as PESD5V0S1BA is required. This part provides clamping only in reverse direction; forward conduction begins at ~0.9 V, offering no meaningful positive-going transient suppression.

How does the ±2 % tolerance affect circuit accuracy in a 4.3 V reference design?

At 4.3 V nominal, ±2 % tolerance means the actual Zener voltage falls between 4.21 V and 4.39 V at 5 mA. In a buffered reference design, this introduces up to ±89 mV absolute error. For sub-10 mV accuracy, post-regulation trimming or calibration is required; the tight tolerance primarily ensures consistency across units without individual adjustment.

Can this diode be used in parallel for higher power handling?

No-Zener diodes exhibit negative temperature coefficients and mismatched VZ values, causing current hogging when paralleled. Even matched units from the same reel will thermally diverge, risking thermal runaway. For >250 mW regulation, use a single higher-power Zener (e.g., BZT52-B4V3 in SOD-123) or an active shunt regulator circuit.