Nexperia USA Inc. PDZ4.7BGWX

Overview

PDZ4.7BGWX from Nexperia is a single Zener diode in SOD123 package, designed for precision voltage regulation and reference functions at nominal 4.7 V with ±2 % tolerance (B-series), 90 Ω max differential resistance at I_Z = 5 mA, 2 μA max reverse current at V_R = 3.76 V, and AEC-Q101 qualification for automotive-grade reliability.

For engineers reviewing the PDZ4.7BGWX datasheet, PDZ4.7BGWX pinout, PDZ4.7BGWX application, or PDZ4.7BGWX equivalent, this device supports stable low-voltage reference design in space-constrained PCB layouts, especially where thermal performance (R_th(j-sp) = 200 K/W), surge resilience (40 W non-repetitive peak power), and tight voltage tolerance are critical selection criteria.

Technical Context

This Zener diode operates in reverse breakdown mode with a nominal working voltage of 4.7 V at I_Z = 5 mA, exhibiting a temperature coefficient of −1.4 mV/K and typical differential resistance of 600 Ω at I_Z = 1 mA. Its low capacitance (325 pF at 1 MHz, V_R = 0 V) supports high-frequency stability in feedback networks.

The device uses a planar silicon process with cathode-anode polarity defined by a marking bar on the SOD123 body. It is rated for junction temperatures up to 150 °C and qualified per AEC-Q101 for automotive underhood applications requiring robust transient suppression and long-term parametric stability.

Key Specifications

Pinout & Package

SOD123 surface-mount plastic package (3.75 mm × 2.55 mm × 1.3 mm), optimized for automated placement and reflow soldering on FR4 PCBs with standard footprint per Figure 9.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C4V7 and MMSZ4704T1G, PDZ4.7BGWX uniquely balances ±2 % tolerance, AEC-Q101 compliance, and ultra-low 2 μA leakage-making it optimal for automotive and portable medical applications demanding both precision and longevity.

Availability

PDZ4.7BGWX is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB-C protection circuits, and medical wearable power management requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for PDZ4.7BGWX 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 leading global semiconductor manufacturer specializing in high-performance, high-reliability discrete and logic devices, with core expertise in automotive-qualified components and energy-efficient solutions.

PDZ4.7BGWX belongs to the PDZ-GW series of general-purpose Zener diodes engineered specifically for space-constrained, thermally demanding applications in automotive and industrial systems where precision, surge resilience, and qualification integrity are mandatory.

FAQ

What is the maximum continuous power dissipation for PDZ4.7BGWX at 25 °C ambient?

The total power dissipation (P_tot) is rated at 365 mW when mounted on an FR4 PCB with single-sided copper and standard footprint. At elevated ambient temperatures, derating applies per the thermal resistance curve: R_th(j-a) = 340 K/W in free air, limiting usable power to ~200 mW at 85 °C ambient.

How does the −1.4 mV/K temperature coefficient affect regulation accuracy over temperature?

At I_Z = 5 mA, the Zener voltage drifts −1.4 mV per Kelvin rise. Over a −40 °C to +125 °C range (165 K ΔT), this yields a worst-case shift of −231 mV, or −4.9 % from 4.7 V. Combined with ±2 % initial tolerance, total system variation remains within ±7 %-acceptable for non-critical reference applications.

Can PDZ4.7BGWX be used in parallel for higher current capability?

No-Zener diodes exhibit negative temperature coefficients and mismatched V_Z tolerances, causing current hogging and thermal runaway when paralleled. For higher current, use a single higher-power Zener or a dedicated shunt regulator IC with current-sharing capability.

Is the SOD123 footprint compatible with automated optical inspection (AOI) systems?

Yes-the SOD123 package has standardized dimensions (3.75 mm × 2.55 mm) and visible cathode marking bar, enabling reliable AOI detection of polarity, placement offset, and solder joint quality using industry-standard vision algorithms and lighting setups.