Nexperia USA Inc. PZU84-C13-QR

Overview

PZU84-C13-QR from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, rated for 13 V nominal breakdown voltage (12.47–13.96 V), 10 μA reverse leakage at 10 V, 103 Ω differential resistance at 5 mA, and qualified to AEC-Q101 for automotive power rail stabilization.

For engineers reviewing the PZU84-C13-QR datasheet, PZU84-C13-QR pinout, PZU84-C13-QR application, or PZU84-C13-QR equivalent, this device serves as a precision low-leakage voltage reference in ECU power supervision, infotainment supply clamping, and sensor biasing circuits where stable 13 V regulation under transient load is required.

Technical Context

This Zener diode operates in reverse breakdown mode with hard knee characteristics optimized for low-current regulation (IZ = 5 mA typical), delivering tight voltage control across −55 °C to +150 °C ambient range. Its thermal resistance from junction to solder point is 330 K/W, enabling reliable operation on standard FR4 PCBs without heatsinking.

The device exhibits a temperature coefficient of +7.0 mV/K at 5 mA, indicating positive drift with temperature-critical for compensating other circuit elements in automotive voltage monitoring paths. It supports non-repetitive surge power up to 40 W for 100 μs pulses, meeting ISO 7637-2 transient immunity requirements.

Key Specifications

Pinout & Package

SOT23 plastic surface-mount package with 3 terminals, 1.9 mm pitch, and 2.9 mm × 1.3 mm × 1.0 mm body dimensions. Cathode tab provides lowest thermal resistance path to PCB copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PZU84-C13-QR, BZX84-C13-TP offers lower cost but sacrifices automotive qualification and voltage precision, while MMSZ5243B-TP delivers superior dynamic regulation at the expense of leakage current and board space-making PZU84-C13-QR optimal for space-constrained, AEC-compliant 13 V reference needs.

Availability

PZU84-C13-QR is available at Aetrix Electronics and suitable for automotive ECU design, infotainment system development, and body electronics manufacturing requiring stable component supply with guaranteed long-term continuity.

Supply support for PZU84-C13-QR 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 essential efficiency technologies, delivering high-performance, high-reliability discrete and logic devices for automotive, industrial, and mobile markets.

The PZU84-Q series belongs to Nexperia's AEC-Q101-qualified Zener regulator portfolio, engineered specifically for robust voltage reference and clamping in harsh automotive environments where precision, longevity, and thermal resilience are mandatory.

FAQ

What is the maximum continuous reverse current the PZU84-C13-QR can sustain without degradation?

The device supports continuous reverse current up to 200 mA, as defined by its absolute maximum forward current rating. However, sustained operation above 20 mA requires thermal derating per the 500 K/W junction-to-ambient thermal resistance-practical continuous regulation is limited to ≤15 mA at 25 °C ambient to maintain Tj < 125 °C.

Does the n.c. pin (pin 2) require grounding or isolation on the PCB layout?

Pin 2 is internally not connected and must remain electrically floating-no PCB trace, pad, or solder mask opening is required. Routing copper near it is permissible, but intentional connection to ground or any net will compromise device functionality and may cause parametric failure during testing.

How does the +7.0 mV/K temperature coefficient affect regulation accuracy over automotive temperature range?

Over −40 °C to +125 °C, the coefficient causes ~1.15 V total drift (165 K × 7.0 mV/K). This is mitigated by design: the 13 V nominal V_Z shifts from ~12.4 V at −40 °C to ~13.55 V at +125 °C, remaining within the 12.47–13.96 V specification band and preserving functional margin for 12 V system clamping.

Can PZU84-C13-QR replace older PZU84-B13-Q in existing designs?

Yes-both share identical SOT23 package, pinout, and 13 V nominal rating, but PZU84-C13-QR offers tighter ±2 % tolerance (vs. ±5 % for B13-Q), lower leakage (<10 μA vs. <100 μA), and improved rdif (103 Ω vs. 140 Ω), yielding better regulation stability in low-power automotive nodes without layout changes.