Nexperia USA Inc. PZU2.7BA,115

Overview

PZU2.7BA,115 from Nexperia is a general-purpose Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision voltage reference and overvoltage protection in low-power analog circuits. It delivers a nominal 2.7 V Zener voltage with ±5 % tolerance (B series), 1000 Ω maximum differential resistance at I_Z = 5 mA, ≤100 µA reverse current at I_Z = 0.5 mA, and operates up to 150 °C junction temperature - commonly used in power supply feedback loops and sensor biasing networks.

For engineers reviewing the PZU2.7BA,115 datasheet, PZU2.7BA,115 pinout, PZU2.7BA,115 application, or PZU2.7BA,115 equivalent, key selection criteria include Zener voltage tolerance, dynamic impedance at regulation current, thermal resistance (R_th(j-a) = 390 K/W), leakage behavior at low bias, and SOD323 footprint compatibility with high-density PCB layouts.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its hard breakdown knee and low leakage current support accurate voltage clamping in signal conditioning and reference circuits.

Designed for surface-mount applications, it uses a planar silicon process with cathode-anode polarity clearly marked by a bar on the SOD323 body. The device exhibits a negative temperature coefficient of −2.0 mV/K near 2.7 V, enabling predictable drift compensation in temperature-sensitive designs.

Key Specifications

Pinout & Package

SOD323 (SC-76) plastic surface-mount package with 2 leads, 1.3 mm pitch, and cathode identified by a marking bar on the body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PZU2.7BA,115, BZX384-B2V7,115 offers superior voltage accuracy at the expense of higher unit cost and identical thermal limits, while MMSZ4678T1G trades miniaturization for greater power handling and broader industry footprint adoption.

Availability

PZU2.7BA,115 is available at Aetrix Electronics and suitable for power supply feedback, sensor biasing, overvoltage protection, and signal level clamping requiring stable component supply across industrial, medical, and consumer electronics programs.

Supply support for PZU2.7BA,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 advanced packaging and automotive-qualified components.

The PZUxBA series belongs to Nexperia's general-purpose Zener regulator product line, engineered for cost-effective, space-constrained voltage reference and protection functions in mass-produced electronic systems.

FAQ

What is the maximum continuous reverse current for reliable long-term operation?

The PZU2.7BA,115 supports up to 200 mA forward current per limiting values, but for Zener regulation, the recommended continuous reverse current is ≤20 mA to maintain <100 mW dissipation and avoid thermal runaway. At 5 mA test current, it achieves specified V_Z and r_dif performance with <0.5 °C self-heating on standard FR4.

How does the −2.0 mV/K temperature coefficient affect circuit accuracy over −40 °C to +85 °C?

With a −2.0 mV/K coefficient, V_Z shifts −125 mV across a 62.5 K span (e.g., −40 °C to +22.5 °C), resulting in ~4.6 % deviation from nominal 2.7 V. For applications requiring <1 % drift, active compensation or tighter-tolerance variants (e.g., B1/B2 series) are advised.

Can this diode be used in bidirectional TVS configurations?

No - the PZU2.7BA,115 is a unidirectional Zener diode optimized for reverse-bias regulation only. It lacks symmetric breakdown characteristics and specified surge ratings for bidirectional transient suppression. Use dedicated TVS diodes like PESD5V0S1BA for ESD protection.

Is the SOD323 footprint compatible with automated optical inspection (AOI) systems?

Yes - the SOD323 package has standardized dimensions (1.7 mm × 1.25 mm) and visible cathode marking bar, meeting IPC-7351B Class L requirements for AOI detectability. Reflow soldering footprints in Figure 10 ensure ≥80 % solder paste coverage for reliable machine vision alignment.