Nexperia USA Inc. PDZ15B-QF

Overview

PDZ15B-QF from Nexperia is a single Zener diode in SOD323 (SC-76) package, rated for 14.34 V to 14.98 V nominal Zener voltage at 5 mA, with ±2 % tolerance, 80 Ω max differential resistance, and 0.05 μA max reverse leakage at 11 V. It delivers 400 mW total power dissipation at 25 °C ambient on FR4 PCB and is AEC-Q101 qualified for automotive voltage regulation.

For engineers reviewing the PDZ15B-QF datasheet, PDZ15B-QF pinout, PDZ15B-QF application, or PDZ15B-QF equivalent, this device supports precision low-power voltage reference and clamping in space-constrained automotive ECUs, sensor signal conditioning circuits, and battery monitoring systems where stable 15 V regulation and hard breakdown knee are required.

Technical Context

This Zener diode operates in reverse breakdown mode with a specified working voltage range of 14.34 V to 14.98 V at I_Z = 5 mA and exhibits a temperature coefficient of +11.4 mV/K - indicating positive thermal drift suitable for biasing circuits requiring predictable voltage shift over temperature. Its low 0.05 μA reverse current at VR = 11 V enables ultra-low standby power consumption in always-on subsystems.

The device features a hard breakdown knee and very low dynamic impedance (≤80 Ω), ensuring stable regulation under varying load conditions. Thermal resistance from junction to ambient is 340 K/W on standard FR4 PCB, supporting reliable operation up to +150 °C junction temperature in engine bay or ADAS modules.

Key Specifications

Pinout & Package

PDZ15B-QF uses the SOD323 (SC-76) surface-mount plastic package: 1.7 mm × 1.35 mm body, 0.45 mm height, cathode marked by a bar on the top surface. Mounting requires reflow footprint per Figure 9 (0.6 mm solder land width, 0.95 mm pitch).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C15 and MMSZ5245B, PDZ15B-QF uniquely combines AEC-Q101 qualification, ±2 % tolerance, and SOD323 size - making it the only option for space-constrained automotive applications demanding both precision and compliance.

Availability

PDZ15B-QF is available at Aetrix Electronics and suitable for automotive ECU design, battery management systems, and industrial sensor interface circuits requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for PDZ15B-QF 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 components, with leadership in automotive-grade standard parts.

PDZ15B-QF belongs to the PDZ-B-Q series of AEC-Q101-qualified Zener diodes designed specifically for precision voltage reference and clamping in automotive electronics where small size, tight tolerance, and thermal stability are mandatory.

FAQ

What is the maximum reverse voltage (V_R) that PDZ15B-QF can withstand before breakdown?

PDZ15B-QF begins regulating at its nominal Zener voltage range of 14.34 V to 14.98 V when reverse-biased at I_Z = 5 mA. Its absolute maximum non-repetitive peak reverse voltage is not specified as a standalone parameter; instead, the device is characterized up to V_R = 11 V for leakage testing. Operation above V_Z must remain within P_tot = 400 mW derating limits and T_j ≤ +150 °C.

Does PDZ15B-QF support wave soldering, and what is the recommended footprint?

Yes, PDZ15B-QF is qualified for both reflow and wave soldering. The official Nexperia wave soldering footprint (Figure 10) specifies 1.2 mm solder land length, 2.75 mm center-to-center pitch, and 1.5 mm occupied area width. Solder resist should fully cover lands except for the defined contact areas, and preferred transport direction aligns with the cathode-anode axis.

How does the +11.4 mV/K temperature coefficient affect circuit performance?

The +11.4 mV/K coefficient means V_Z increases by approximately 11.4 mV per degree Celsius rise in junction temperature. At 100 °C ΔT, this yields +1.14 V shift - useful for compensating negative TC elements (e.g., silicon bandgap references) or designing thermally stable bias points in amplifier stages without external compensation networks.

Is PDZ15B-QF suitable for bidirectional ESD protection?

No - PDZ15B-QF is a unidirectional Zener diode optimized for reverse-bias voltage regulation, not transient suppression. Its 2.0 A non-repetitive peak reverse current (I_ZSM) is rated for short pulses (100 µs), not ESD waveforms (e.g., IEC 61000-4-2). For bidirectional ESD protection, purpose-built TVS diodes such as PESD5V0S1BA should be used instead.