Nexperia USA Inc. PZU2.4BA,115

Overview

PZU2.4BA,115 from Nexperia is a general-purpose Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision low-voltage reference and overvoltage protection in space-constrained PCBs. It delivers nominal 2.4 V regulation at 5 mA with ±5 % tolerance (B series), 1000 Ω max differential resistance, ≤100 µA reverse current at 0.5 mA, and -1.6 mV/K temperature coefficient.

For engineers reviewing the PZU2.4BA,115 datasheet, PZU2.4BA,115 pinout, PZU2.4BA,115 application, or PZU2.4BA,115 equivalent, key selection criteria include tight voltage tolerance at low current, hard breakdown knee behavior, thermal resistance of 390 K/W (junction-to-ambient), and compatibility with standard reflow soldering footprints for SOD323.

Technical Context

This Zener diode operates in reverse-biased breakdown mode to maintain stable DC voltage under varying load and input conditions. Its design emphasizes low leakage (≤100 µA at I_Z = 0.5 mA) and sharp knee characteristics-critical for low-power voltage clamping and reference generation in battery-powered systems.

The device exhibits negative temperature coefficient (-1.6 mV/K), enabling predictable drift compensation in multi-diode configurations. Thermal performance is defined for FR4 PCB mounting with single-sided copper: R_th(j-a) = 390 K/W and R_th(j-sp) = 255 K/W, supporting reliable operation up to 150 °C junction temperature.

Key Specifications

Pinout & Package

Package: SOD323 (SC-76), surface-mounted plastic case measuring 1.7 mm × 1.25 mm × 0.95 mm with 1.3 mm lead pitch and cathode-marked body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B2V4 and MMSZ4678, PZU2.4BA,115 provides superior low-current regulation fidelity (1000 Ω r_dif, 100 µA IR) in the smallest footprint (SOD323), making it optimal for miniaturized, battery-efficient designs where leakage and board space are critical constraints.

Availability

PZU2.4BA,115 is available at Aetrix Electronics and suitable for USB interface protection, sensor reference generation, MCU reset circuits, and industrial signal conditioning requiring stable component supply across high-mix, low-volume production runs.

Supply support for PZU2.4BA,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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.

PZUxBA series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for compact, low-leakage voltage regulation in consumer, computing, and industrial power management subsystems.

FAQ

What is the maximum continuous reverse current the PZU2.4BA,115 can sustain without degradation?

The device is rated for 200 mA maximum forward current (IF), but as a Zener diode, its continuous reverse current is limited by power dissipation. At 25 °C ambient on standard FR4 PCB, 320 mW total power dissipation corresponds to ~133 mA at 2.4 V (P = V × I). Exceeding this requires derating per thermal resistance curves in the datasheet.

Does the PZU2.4BA,115 support wave soldering, and what are the recommended pad dimensions?

Yes, PZU2.4BA,115 is qualified for both reflow and wave soldering. The official wave footprint (Fig. 11) specifies 1.2 mm × 2.75 mm solder lands with 0.6 mm solder resist opening per pad and preferred transport direction aligned with the cathode-anode axis to ensure uniform wetting and avoid tombstoning.

How does the -1.6 mV/K temperature coefficient affect regulation accuracy over -40 °C to +85 °C ambient?

Over that range, junction temperature rise causes a worst-case drift of approximately ±0.2 V (1.6 mV/K × 125 K ΔT), shifting the 2.4 V nominal to ~2.2–2.6 V. This is within the ±5 % initial tolerance band, so system-level accuracy remains governed primarily by initial calibration rather than thermal drift.

Can PZU2.4BA,115 be used in series or parallel configurations for higher voltage or current capability?

Series connection is viable for higher voltage references (e.g., two 2.4 V devices yield ~4.8 V), but mismatched temperature coefficients cause unequal voltage sharing. Parallel use is not recommended due to thermal runaway risk-minor V_Z differences cause current hogging and localized overheating.