Nexperia USA Inc. PDZ10B-QZ

Overview

PDZ10B-QZ from Nexperia is a single Zener diode designed for precision voltage regulation in low-power automotive and industrial circuits, with a nominal Zener voltage of 9.77 V to 10.21 V at I_Z = 5 mA, dynamic impedance ≤60 Ω, reverse leakage ≤0.1 μA at V_R = 7.0 V, and AEC-Q101 qualification for under-hood applications.

For engineers reviewing the PDZ10B-QZ datasheet, PDZ10B-QZ pinout, PDZ10B-QZ application, or PDZ10B-QZ equivalent, this device is selected for stable reference generation in power supply feedback loops, overvoltage clamping in sensor interfaces, and ESD-protected bias networks where low leakage, hard breakdown knee, and thermal stability across −65 °C to +150 °C are critical.

Technical Context

This Zener diode operates in reverse-biased breakdown mode to maintain a stable reference voltage under varying load and temperature conditions. Its design emphasizes low dynamic impedance (≤60 Ω at I_Z = 5 mA) and minimal temperature coefficient (+6.4 mV/K at I_Z = 5 mA), enabling accurate regulation in feedback paths without external compensation.

Qualified per AEC-Q101, it supports automotive-grade reliability with junction temperature up to +150 °C, total power dissipation of 400 mW at T_amb = 25 °C on FR4 PCB, and thermal resistance from junction to ambient of 340 K/W - making it suitable for space-constrained SMT designs requiring long-term parametric stability.

Key Specifications

Pinout & Package

PDZ10B-QZ is housed in a SOD323 (SC-76) surface-mount plastic package measuring 1.8 mm × 1.35 mm × 0.95 mm, with cathode marked by a bar on the top surface. The package supports reflow and wave soldering per standardized footprints (solder land: 0.6 mm × 0.5 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C10LT1G and MMSZ4689T1G, PDZ10B-QZ offers tighter ±2% V_Z tolerance and guaranteed hard breakdown knee - critical for precision feedback and low-leakage biasing in automotive ECUs where parameter drift directly impacts functional safety compliance.

Availability

PDZ10B-QZ is available at Aetrix Electronics and suitable for automotive sensor modules, DC-DC converter feedback networks, and ESD-protected communication interfaces requiring stable component supply with full traceability and lifecycle continuity.

Supply support for PDZ10B-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 advanced packaging technologies.

The PDZ-B-Q series targets automotive and industrial voltage regulation needs, delivering AEC-Q101-compliant Zener diodes optimized for low leakage, tight tolerance, and stable thermal performance in compact SMD formats.

FAQ

What is the maximum continuous reverse current PDZ10B-QZ can sustain at 25 °C?

The device supports a maximum continuous reverse current of 200 mA, derived from its 400 mW power rating and minimum Zener voltage of 9.77 V (P_tot/V_Z(min) ≈ 40.9 mA). However, sustained operation above 5 mA is limited by thermal derating - actual usable current depends on PCB copper area and ambient temperature per the published derating curve.

How does the marking 'ZF' correspond to PDZ10B-QZ?

'ZF' is the official top-side marking code for PDZ10B-QZ per Nexperia's ordering table, applied on the cathode-end of the SOD323 package. The bar adjacent to 'ZF' indicates the cathode terminal, aligning with Pin 1 in the pinning diagram and ensuring correct orientation during automated placement.

Can PDZ10B-QZ replace PDZ10B in existing designs?

Yes - PDZ10B-QZ is the AEC-Q101-qualified version of PDZ10B, sharing identical electrical characteristics, SOD323 package dimensions, and marking. The '-QZ' suffix denotes automotive qualification; no layout or schematic changes are required for drop-in replacement in new or revised automotive designs.

What is the significance of the +6.4 mV/K temperature coefficient at I_Z = 5 mA?

This value means the Zener voltage increases by 6.4 mV for every 1 K rise in junction temperature at 5 mA test current. It enables accurate prediction of V_Z drift across operating temperature ranges - for example, a 100 K rise from 25 °C to 125 °C adds ~640 mV to nominal V_Z, which must be accounted for in reset threshold or reference voltage budgets.