Nexperia USA Inc. PDZ36B-QF

Overview

PDZ36B-QF from Nexperia is a single Zener diode in SOD323 (SC-76) package, rated for 35.07 V to 36.87 V nominal Zener voltage at I_Z = 5 mA, with ±2 % tolerance, 300 Ω max differential resistance, and 0.05 μA max reverse leakage at V_R = 27 V. It delivers stable voltage regulation in automotive power supply rails and low-power reference circuits.

For engineers reviewing the PDZ36B-QF datasheet, PDZ36B-QF pinout, PDZ36B-QF application, or PDZ36B-QF equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (R_th(j-a) = 340 K/W), AEC-Q101 qualification, low leakage current, and SOD323 footprint compatibility with high-density PCB layouts.

Technical Context

This device operates as a two-terminal voltage reference, clamping reverse-biased voltage across its anode–cathode terminals with hard breakdown knee and minimal dynamic impedance variation at low currents (IZ = 0.5 mA to 5 mA). Its temperature coefficient is +27 mV/K to +33 mV/K, enabling predictable drift compensation in precision bias networks.

Designed for surface-mount use on FR4 PCBs with single-sided copper, it sustains 400 mW total power dissipation at T_amb ≤ 25 °C and derates linearly above that temperature. Junction-to-ambient thermal resistance of 340 K/W and junction-to-solder-point resistance of 130 K/W define its thermal performance envelope under continuous operation.

Key Specifications

Pinout & Package

PDZ36B-QF uses the SOD323 (SC-76) plastic surface-mount package: 1.35 mm × 0.8 mm body, 0.45 mm height, cathode marked by a bar on the top surface. Mounting requires standard reflow footprint per Figure 9 (0.6 mm solder land width, 0.5 mm spacing).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C36 and MMSZ5241B, PDZ36B-QF uniquely combines AEC-Q101 qualification, ±2 % tolerance, SOD323 miniaturization, and 300 Ω r_dif-making it optimal for space-constrained automotive and portable medical designs requiring tight voltage control and long-term reliability.

Availability

PDZ36B-QF is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB-C power delivery protection, and medical wearable battery monitoring requiring stable component supply across extended temperature ranges and lifecycle continuity.

Supply support for PDZ36B-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 specializing in high-performance, reliable discrete, logic, and MOSFET devices, with manufacturing rooted in process technology leadership and automotive-grade quality systems.

The PDZ-B-Q series targets automotive and industrial voltage regulation needs, delivering AEC-Q101-qualified Zener diodes with tight tolerances, low leakage, and miniature SMD packages optimized for modern PCB assembly and harsh-environment reliability.

FAQ

What is the maximum reverse voltage PDZ36B-QF can withstand before breakdown?

The nominal Zener voltage range is 35.07 V to 36.87 V at I_Z = 5 mA, with a guaranteed minimum working voltage of 35.07 V. Breakdown begins sharply at this threshold; operation below 35.07 V results in negligible reverse current (<0.05 μA at 27 V), confirming stable non-conducting behavior until rated V_Z is reached.

Is PDZ36B-QF suitable for reflow soldering on standard FR4 PCBs?

Yes-PDZ36B-QF is qualified for lead-free reflow soldering per JEDEC J-STD-020. Its SOD323 package uses a standard footprint with 0.6 mm solder lands and 0.5 mm pitch, compatible with IPC-7351B Class B density. Thermal resistance data assumes mounting on FR4 with single-sided copper and tin plating, matching typical production conditions.

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

With a specified S_Z of +27 mV/K to +33 mV/K, the Zener voltage increases by approximately 4.7 V to 5.8 V across the full automotive temperature range. This drift is linear and predictable, allowing system-level compensation in firmware or analog circuitry-critical for applications like ADC reference stabilization where absolute accuracy must be maintained.

Can PDZ36B-QF replace older PDZ36B variants without layout changes?

Yes-PDZ36B-QF shares identical SOD323 mechanical dimensions, pinning (cathode-bar orientation), solder footprint, and electrical specifications with legacy PDZ36B parts. The "-QF" suffix denotes AEC-Q101 qualification and enhanced process control; no PCB redesign or schematic modification is required for drop-in replacement in existing automotive or industrial designs.