Nexperia USA Inc. PDZ8.2BF

Overview

PDZ8.2BF from Nexperia is a single silicon Zener diode designed for low-power voltage regulation in space-constrained SMD applications, with a nominal Zener voltage of 8.2 V at 5 mA, ±2 % tolerance, 60 Ω maximum differential resistance at 5 mA, 0.5 μA maximum reverse current at 6.56 V, and 400 mW total power dissipation on FR4 PCB.

For engineers reviewing the PDZ8.2BF datasheet, PDZ8.2BF pinout, PDZ8.2BF application, or PDZ8.2BF equivalent, this device serves as a precision shunt reference in power supply feedback loops, overvoltage clamping circuits, and low-current biasing networks where compact size, stable knee characteristics, and tight voltage tolerance are critical.

Technical Context

The PDZ8.2BF operates as a two-terminal shunt regulator, maintaining a stable 8.02–8.36 V breakdown voltage across its cathode–anode terminals when reverse-biased above its Zener threshold. Its hard breakdown knee and low dynamic impedance (≤60 Ω at I_Z = 5 mA) ensure predictable regulation under varying load conditions.

Thermal performance is defined by R_th(j-sp) = 130 K/W (junction-to-solder point) and R_th(j-a) = 340 K/W (junction-to-ambient), enabling reliable operation up to +150 °C junction temperature. It exhibits a positive temperature coefficient of +4.6 mV/K at 5 mA, supporting stable regulation across industrial temperature ranges.

Key Specifications

Pinout & Package

PDZ8.2BF is housed in a SOD323 (SC-76) surface-mount plastic package measuring 1.8 × 1.35 × 0.95 mm, with cathode identified by a marking bar on the top surface. The package supports reflow and wave soldering per IPC-J-STD-020 and IPC-J-STD-006 standards.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C8V2 and MMSZ4687, PDZ8.2BF offers superior voltage accuracy and lower dynamic impedance in the smallest footprint, making it optimal for high-density, precision-regulated systems where thermal headroom and layout area are constrained.

Availability

PDZ8.2BF is available at Aetrix Electronics and suitable for power supply feedback regulation, overvoltage clamp protection, and reference voltage biasing requiring stable component supply, consistent parametric performance, and SOD323 footprint compatibility.

Supply support for PDZ8.2BF 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 delivering high-performance, reliable discrete, logic, and MOSFET devices optimized for efficiency, miniaturization, and robustness in high-volume applications.

PDZ8.2BF belongs to the PDZ-B series of low-power Zener diodes engineered specifically for space-constrained voltage regulation and clamping in consumer, industrial, and communication equipment where precision, consistency, and SMD manufacturability are essential.

FAQ

What is the maximum reverse current specification for PDZ8.2BF at its rated Zener voltage?

The PDZ8.2BF has a maximum reverse current (I_R) of 0.5 μA when tested at 6.56 V (80 % of nominal V_Z). At its full Zener test current of 5 mA, it maintains a stable 8.02–8.36 V breakdown with ≤60 Ω differential resistance, confirming low-leakage, high-precision regulation capability.

Can PDZ8.2BF be used in place of a 5.1 V Zener diode in an existing design?

No - PDZ8.2BF is specified for 8.2 V nominal regulation and is not interchangeable with 5.1 V devices like PDZ5.1B. Substituting it would raise the clamping or reference voltage by ~61 %, potentially causing overvoltage damage or control loop instability. Always match Zener voltage to circuit requirements.

How does the SOD323 package affect thermal performance compared to larger packages?

The SOD323 package delivers R_th(j-sp) = 130 K/W and R_th(j-a) = 340 K/W on FR4 PCB, enabling 400 mW dissipation only at ≤25 °C ambient. Larger packages (e.g., SOT-23) offer lower R_th(j-a) but require more board area; PDZ8.2BF's thermal design assumes standard single-sided copper footprint per Figure 1 in the datasheet.

Is PDZ8.2BF suitable for automotive applications?

No - PDZ8.2BF is not AEC-Q200 qualified and lacks automotive-grade screening, extended temperature validation, or failure-in-time (FIT) data. Nexperia explicitly states non-automotive qualification in the legal disclaimers; use only in industrial, consumer, or communications equipment unless separately qualified by the customer.