Nexperia USA Inc. PDZ8.2B-QZ

Overview

PDZ8.2B-QZ from Nexperia is a single Zener diode designed for precision voltage regulation in low-power circuits, with a nominal Zener voltage of 8.2 V (min 8.02 V, max 8.36 V at I_Z = 5 mA), ±2 % tolerance, 60 Ω maximum differential resistance, and qualified to AEC-Q101 for automotive use.

For engineers reviewing the PDZ8.2B-QZ datasheet, PDZ8.2B-QZ pinout, PDZ8.2B-QZ application, or PDZ8.2B-QZ equivalent, this device supports stable reference generation in power supply feedback loops, overvoltage clamping in sensor interfaces, and ESD-protected bias networks where low leakage (<0.5 µA at V_R = 6.6 V) and hard breakdown knee are critical.

Technical Context

This Zener diode operates in reverse-biased breakdown mode to maintain a stable reference voltage across its cathode–anode terminals. Its 8.2 V nominal working voltage is specified at 5 mA test current, with temperature coefficient of +4.6 mV/K and typical dynamic impedance of 60 Ω - enabling predictable regulation under varying load and thermal conditions.

Designed for surface-mount implementation in SOD323 (SC-76) package, it delivers 400 mW total power dissipation at T_amb ≤ 25 °C on FR4 PCB, with thermal resistance from junction to ambient of 340 K/W and junction-to-solder-point of 130 K/W - supporting reliable operation in compact, thermally constrained automotive and industrial modules.

Key Specifications

Pinout & Package

PDZ8.2B-QZ is housed in a SOD323 (SC-76) plastic surface-mounted package measuring 1.8 mm × 1.35 mm × 0.95 mm, with cathode indicated by a marking bar on the top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C8V2 and MMSZ5235B, PDZ8.2B-QZ offers superior voltage accuracy (±2 % vs. ±5 %), lower dynamic impedance (60 Ω vs. ≥90 Ω), AEC-Q101 qualification, and optimized thermal performance in SOD323 - making it the preferred choice for automotive and high-stability industrial regulation.

Availability

PDZ8.2B-QZ is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, consumer power adapter feedback circuits, and medical portable device bias networks requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for PDZ8.2B-QZ 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 discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.

PDZ8.2B-QZ belongs to the PDZ-B-Q series of AEC-Q101-qualified Zener diodes engineered specifically for precision voltage reference and overvoltage protection in automotive electronics and demanding industrial environments.

FAQ

What is the maximum reverse current rating for PDZ8.2B-QZ before breakdown?

PDZ8.2B-QZ has no defined "maximum reverse current before breakdown" - it is designed to operate in controlled reverse breakdown. At V_R = 6.6 V (80 % of nominal V_Z), reverse current is guaranteed ≤0.5 µA. Breakdown begins near 8.02 V and stabilizes at I_Z = 5 mA, where V_Z = 8.02–8.36 V.

Can PDZ8.2B-QZ be used in parallel for higher power dissipation?

No - Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, but PDZ8.2B-QZ's +4.6 mV/K coefficient does not guarantee matched thermal drift across units. Parallel connection risks current hogging and thermal runaway; use a single device rated for required power or select a higher-P_tot alternative.

Is the SOD323 package compatible with standard reflow soldering profiles?

Yes - Nexperia specifies compatibility with JEDEC J-STD-020D reflow profiles. The SOD323 footprint requires 0.5 mm × 0.6 mm solder pads (2×), 0.6 mm solder resist opening, and peak temperature ≤260 °C for ≤30 seconds. Thermal resistance data assumes standard FR4 PCB with single-sided 1 oz copper.

How does the +4.6 mV/K temperature coefficient affect regulation accuracy over −40 °C to +125 °C?

Over that 165 °C range, V_Z shifts by +4.6 mV/K × 165 K ≈ +759 mV - from ~7.9 V at −40 °C to ~8.7 V at +125 °C. This 9.4 % deviation is acceptable for non-critical references; for tighter stability, pair with NTC compensation or use temperature-compensated references like TL431 with external resistors.