Nexperia USA Inc. PDZ36BZ

Overview

PDZ36BZ from Nexperia is a single Zener diode designed for low-power voltage regulation in space-constrained SMD applications, with a nominal Zener voltage of 36 V (min 35.07 V, max 36.87 V at I_Z = 5 mA), ±2 % tolerance, 60 Ω maximum differential resistance at 5 mA, and 0.05 μA reverse current at V_R = 27 V. It operates in the SOD323 (SC-76) package and supports general-purpose clamping and reference functions in power supply feedback paths.

For engineers reviewing the PDZ36BZ datasheet, PDZ36BZ pinout, PDZ36BZ application, or PDZ36BZ equivalent, key selection criteria include Zener voltage accuracy at 5 mA, low leakage at rated reverse voltage, thermal resistance (R_th(j-a) = 340 K/W on FR4), dynamic impedance behavior, and compatibility with reflow/wave soldering footprints per SOD323 standard.

Technical Context

This Zener diode implements a silicon planar junction structure optimized for stable reverse breakdown with a hard knee and minimal voltage drift over temperature. Its 36 V nominal working voltage places it in the high-voltage segment of the PDZ-B series, where temperature coefficient (S_Z) is +33.0 mV/K (typical) - indicating positive drift above ~5 V - and capacitance is 59 pF at 0 V (f = 1 MHz).

It is rated for continuous forward current up to 200 mA and non-repetitive peak reverse current of 0.8 A (t_p = 100 μs). Power dissipation is limited to 400 mW at T_amb ≤ 25 °C on standard FR4 PCB, derating linearly above that ambient per Fig. 1.

Key Specifications

Pinout & Package

The PDZ36BZ is housed in a surface-mount SOD323 (SC-76) plastic package with two terminals. The cathode is marked by a visible bar on the device body. Mounting follows JEDEC-standard reflow footprint (Fig. 9) or wave soldering layout (Fig. 10).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B36 and MMSZ5265B, PDZ36BZ delivers superior voltage accuracy (±2 % vs ±5 %), lower leakage (0.05 μA vs 0.1 μA), and finer impedance control (60 Ω vs ≥70 Ω), making it optimal for precision feedback and low-power biasing in miniaturized industrial modules.

Availability

PDZ36BZ is available at Aetrix Electronics and suitable for switch-mode power supplies, microcontroller reset circuits, industrial sensor conditioning, and ESD protection clamps requiring stable component supply, consistent parametric performance, and full traceability.

Supply support for PDZ36BZ 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 high-volume, high-reliability logic, discrete, and MOSFET solutions, with manufacturing rooted in process excellence and automotive-grade quality systems.

The PDZ-B series targets cost-sensitive, space-constrained general-purpose voltage regulation - delivering tight-tolerance Zener performance in the smallest standard SMD package for consumer, industrial, and computing applications.

FAQ

What is the maximum reverse voltage this Zener can sustain without breakdown?

The PDZ36BZ is specified to operate with a nominal Zener voltage of 35.07 V to 36.87 V at 5 mA. Its absolute maximum non-repetitive peak reverse voltage is not defined independently - instead, its safe operating limit is governed by the non-repetitive peak reverse current rating (0.8 A at t_p = 100 μs) and total power dissipation (400 mW at 25 °C ambient). Exceeding these limits risks irreversible junction damage.

How does temperature affect its Zener voltage stability?

At I_Z = 5 mA, PDZ36BZ exhibits a positive temperature coefficient of +33.0 mV/K (typical), meaning its Zener voltage increases by approximately 33 mV per degree Celsius rise in junction temperature. This behavior is inherent to higher-voltage Zeners (>5 V) and must be factored into precision reference designs operating across −65 °C to +150 °C storage or up to +150 °C junction temperature.

Can PDZ36BZ be used in forward-biased mode like a standard diode?

Yes - PDZ36BZ has a forward voltage of ≤0.9 V at 10 mA and ≤1.1 V at 100 mA, matching typical silicon diode characteristics. Its continuous forward current rating is 200 mA, making it suitable for polarity protection or basic rectification in low-current signal paths, though it is not optimized for high-efficiency forward conduction like dedicated rectifiers.

Is the SOD323 package compatible with standard reflow soldering profiles?

Yes - Nexperia specifies a reflow soldering footprint (Fig. 9) with 0.5 mm pad width, 1.65 mm pad length, and 0.95 mm center-to-center spacing. The device is qualified for lead-free reflow per J-STD-20, with peak temperatures up to 260 °C. Thermal resistance data (R_th(j-a) = 340 K/W) assumes mounting on standard FR4 with single-sided copper and tin plating, confirming compatibility with mainstream SMT lines.