Nexperia USA Inc. PZU3.0DB2,115

Overview

PZU3.0DB2,115 from Nexperia is a dual isolated general-purpose Zener diode in SOT353 (SC-88A) package, designed for precision voltage regulation and overvoltage protection in compact PCB layouts. It features a nominal Zener voltage of 3.0 V (±2 % tolerance), 40 W non-repetitive peak reverse power dissipation, 250 mW total power dissipation, and AEC-Q101 qualification for automotive use.

For engineers reviewing the PZU3.0DB2,115 datasheet, PZU3.0DB2,115 pinout, PZU3.0DB2,115 application, or PZU3.0DB2,115 equivalent, this device supports dual-channel independent regulation in space-constrained designs requiring stable low-voltage reference, ESD-tolerant clamping, and thermal reliability up to 150 °C junction temperature.

Technical Context

This dual Zener diode integrates two electrically isolated Zener elements in a single 5-pin SOT353 package - pins 1/5 form Diode 1 (anode/cathode), pins 3/4 form Diode 2 (anode/cathode), with pin 2 unconnected. Each diode operates independently with identical 3.0 V nominal Zener voltage and matched ±2 % tolerance.

It delivers 95 µA maximum reverse current at I_Z = 0.5 mA, 10 Ω typical differential resistance at I_Z = 5 mA, and −2.1 mV/K temperature coefficient - enabling stable low-voltage reference generation across industrial temperature ranges (−55 °C to +150 °C).

Key Specifications

Pinout & Package

SOT353 (SC-88A) is a 5-lead surface-mount plastic package measuring 2.2 × 1.35 × 0.9 mm, optimized for high-density PCB assembly and automated placement. Its small footprint and low profile support miniaturized power management and signal conditioning modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B3V0,115 and PZU3.0BD,115, the PZU3.0DB2,115 uniquely combines dual isolated Zener functionality, ±2 % tolerance, and AEC-Q101 qualification - making it the only drop-in solution for automotive dual-rail clamping and precision 3.0 V reference generation in space-constrained designs.

Availability

PZU3.0DB2,115 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and consumer portable device protection requiring stable component supply, consistent parametric performance, and long-term lifecycle assurance.

Supply support for PZU3.0DB2,115 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 leader in high-performance discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.

The PZUxDB2 series targets compact, high-reliability voltage regulation and transient protection - engineered specifically for AEC-Q101-compliant automotive subsystems and thermally demanding industrial edge nodes.

FAQ

What is the maximum continuous reverse current (I_Z) this device supports at 3.0 V regulation?

The PZU3.0DB2,115 supports up to 5 mA DC reverse current at its nominal 3.0 V Zener voltage, delivering stable regulation with 10 Ω typical differential resistance. At 0.5 mA, reverse current is limited to 95 µA max - ensuring low quiescent power in always-on monitoring circuits.

Can Pin 2 be grounded or left unconnected without affecting performance?

Pin 2 is internally unconnected and must remain floating - grounding or routing it creates no electrical effect but risks solder bridging or contamination-induced leakage. The datasheet explicitly defines it as "not connected", and no thermal or electrical benefit arises from termination.

How does the −2.1 mV/K temperature coefficient impact accuracy over −40 °C to +125 °C?

Over that range, the Zener voltage drifts by approximately ±0.17 V (−2.1 mV/K × 85 K), resulting in a worst-case V_Z of 2.83 V to 3.17 V. Combined with ±2 % initial tolerance, total variation remains within ±5.6 % - sufficient for non-precision clamping and supervisory functions.

Is the /DG halogen-free variant pin-compatible and electrically identical to PZU3.0DB2,115?

Yes - PZU3.0DB2/DG shares identical electrical specs, pinout, thermal characteristics, and SOT353 mechanical dimensions. The /DG suffix denotes halogen-free molding compound only; no derating or layout changes are needed when substituting in existing designs.