Nexperia USA Inc. PDZ24BGWX

Overview

PDZ24BGWX from Nexperia is a single Zener diode in SOD123 package, designed for precision voltage regulation and reference functions at 24 V nominal Zener voltage (V_Z = 23.72–24.78 V @ I_Z = 5 mA), ±2 % tolerance (B-series), 30 μA max reverse current at 19.0 V, and AEC-Q101 qualified for automotive environments.

For engineers reviewing the PDZ24BGWX datasheet, PDZ24BGWX pinout, PDZ24BGWX application, or PDZ24BGWX equivalent, this device supports stable low-power voltage clamping, overvoltage protection, and biasing in space-constrained PCB layouts where thermal resistance to ambient (R_th(j-a) = 340 K/W) and surge capability (P_ZSM = 40 W, t_p = 100 μs) are critical selection criteria.

Technical Context

This Zener diode operates in reverse breakdown with tightly controlled differential resistance (r_dif ≤ 120 Ω @ I_Z = 5 mA) and low temperature coefficient (S_Z = +19.0 to +20.4 mV/K @ I_Z = 5 mA), enabling stable regulation across −55 °C to +150 °C ambient range. Its cathode-anode polarity is unidirectional and non-repetitive surge rated per IEC 60134.

The device uses silicon planar technology with tin-plated copper leads on FR4 PCB, achieving 50 K/W junction-to-solder-point thermal resistance when mounted with 1 cm² cathode pad. It exhibits 80 pF capacitance at 1 MHz and 0 V reverse bias, suitable for low-frequency regulation-not RF signal paths.

Key Specifications

Pinout & Package

SOD123 surface-mount plastic package (3.75 × 2.55 × 1.3 mm), cathode-marked with bar, optimized for reflow soldering on standard FR4 PCB with defined footprint (4.18 × 1.11 mm pad area).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C24 and MMSZ5242B, PDZ24BGWX delivers superior automotive readiness, tighter ±2 % regulation, and lower leakage-making it the sole choice for AEC-compliant 24 V shunt references where long-term stability and transient immunity are mandatory.

Availability

PDZ24BGWX is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor reference, and low-power IoT regulation requiring stable component supply with guaranteed long-term continuity.

Supply support for PDZ24BGWX 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, reliable discrete and logic devices for automotive, industrial, and consumer markets.

PDZ24BGWX belongs to the PDZ-GW series of AEC-Q101-qualified Zener diodes engineered specifically for robust voltage regulation in harsh automotive environments and high-reliability industrial control systems.

FAQ

What is the maximum continuous reverse current this diode can sustain at 24 V?

The PDZ24BGWX is not rated for continuous reverse conduction at its Zener voltage. Its specified continuous operation is defined by total power dissipation: at 24 V, maximum steady-state current is 15.2 mA (365 mW ÷ 24 V), limited by thermal constraints on standard FR4 PCB. Exceeding this risks junction overheating beyond 150 °C.

Does the SOD123 package support automated optical inspection (AOI) after reflow?

Yes-the SOD123 package has a visible cathode marking bar and consistent 3.75 × 2.55 mm outline, enabling reliable AOI detection using standard vision algorithms. The flat, coplanar leads and defined solder paste stencil (0.81 mm pad width) ensure high first-pass yield in SPI/AOI lines calibrated for 0805 passives.

Can PDZ24BGWX replace a 24 V Zener in a linear regulator feedback network?

Yes-it provides stable 24 V reference with ±2 % tolerance and low 120 Ω dynamic impedance, making it suitable for feedback divider networks in adjustable LDOs or op-amp-based regulators. Its 19.0–20.4 mV/K temperature coefficient must be compensated in precision applications above 85 °C ambient.

How does the 40 W non-repetitive surge rating translate to real-world transient immunity?

This rating corresponds to surviving ISO 7637-2 Pulse 1 (−150 V, 2 Ω source, 50 ms) and Pulse 2a (+100 V, 12 V system) when used with appropriate series impedance. At 100 μs duration, it absorbs up to 4000 mJ (40 W × 0.1 ms), protecting downstream ICs without degradation across 1000+ surge events under AEC-Q101 test conditions.