Nexperia USA Inc. PZU15DB2,115

Overview

PZU15DB2,115 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 surface-mounted circuits. It features a nominal Zener voltage of 15 V (14.34–14.98 V at I_Z = 5 mA), ±2 % tolerance (B2 series), 250 mW total power dissipation, AEC-Q101 qualification, and dual independent anode-cathode pairs for discrete regulation paths.

For engineers reviewing the PZU15DB2,115 datasheet, PZU15DB2,115 pinout, PZU15DB2,115 application, or PZU15DB2,115 equivalent, key selection criteria include Zener voltage accuracy, low differential resistance (80 Ω max), temperature coefficient (11 mV/K), non-repetitive surge capability (40 W), and automotive-grade reliability in space-constrained designs.

Technical Context

This dual Zener device integrates two electrically isolated diodes in a single 5-pin SOT353 package-Pin 1 and Pin 3 are anodes for Diode 1 and Diode 2 respectively; Pins 4 and 5 are their dedicated cathodes; Pin 2 is NC. Each diode operates independently with identical 15 V nominal regulation and shares thermal limits under ambient conditions.

It supports stable DC regulation across −55 °C to +150 °C ambient, with junction-to-ambient thermal resistance of 500 K/W (standard footprint) and 455 K/W (enhanced pad), enabling use in thermally demanding automotive and industrial control modules without external heatsinking.

Key Specifications

Pinout & Package

SOT353 (SC-88A) is a 5-lead, very small outline plastic surface-mount package (2.2 × 1.35 × 0.9 mm), halogen-free option available as /DG variant; optimized for automated placement and reflow soldering on FR4 PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C15LT1G, PZU15DB2,115 delivers dual-path isolation and ±2 % accuracy in identical footprint; versus PZU15B2,115, it improves voltage stability by 3 % absolute tolerance-critical for closed-loop sensor excitation and ADC reference integrity.

Availability

PZU15DB2,115 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor transmitters, consumer power management circuits, and medical diagnostic equipment requiring stable component supply with AEC-Q101 assurance and halogen-free compliance.

Supply support for PZU15DB2,115 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 discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on high-volume, high-reliability components for automotive, industrial, and computing markets.

The PZUxDB2 series was engineered specifically for space-constrained, high-stability voltage regulation in automotive and industrial applications-emphasizing AEC-Q101 compliance, tight tolerance, and dual-diode functional isolation in ultra-small packages.

FAQ

What is the maximum continuous forward current for each diode in PZU15DB2,115?

The absolute maximum forward current per diode is 200 mA, as specified in Table 5 (Limiting Values). This rating applies under ambient conditions ≤25 °C with standard PCB mounting; derating is required above that temperature per the thermal resistance data (R_th(j-a) = 500 K/W).

Is Pin 2 internally connected, and what happens if it's accidentally soldered to ground?

Pin 2 is explicitly designated "not connected" in Table 2 and has no internal bond wire or die connection. Accidental grounding introduces no electrical fault but may cause mechanical stress or solder bridging risk; layout guidelines require keeping Pin 2 floating and unmasked in stencil design.

How does the +11 mV/K temperature coefficient affect regulation accuracy over −40 °C to +125 °C?

Over that 165 K range, V_Z shifts by approximately +1.8 V (11 mV/K × 165 K), resulting in a worst-case regulation band of ~12.5 V to ~16.3 V. System-level compensation (e.g., using negative TC components) or calibration is needed for sub-1 % stability across full temperature range.

Can PZU15DB2,115 replace single-Zener diodes like BZX84-C15 in existing designs?

No direct replacement is possible without circuit revision: PZU15DB2,115 requires two independent cathode connections (Pins 4 and 5) and has a 5-pin SOT353 footprint versus 3-pin SOT-23. Its dual-diode topology serves distinct functions-dual-rail regulation or isolation-not achievable with single-Zener parts.