Nexperia USA Inc. PDZ7.5BF

Overview

PDZ7.5BF 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 7.5 V at 5 mA, ±2 % tolerance, 60 Ω maximum differential resistance at 5 mA, 0.5 μA maximum reverse current at 4.0 V, and 4.0 mV/K temperature coefficient. It operates as a precision shunt reference in bias networks, overvoltage clamping circuits, and low-current voltage stabilization stages.

For engineers reviewing the PDZ7.5BF datasheet, PDZ7.5BF pinout, PDZ7.5BF application, or PDZ7.5BF equivalent, this device is selected for compact, low-leakage, hard-knee Zener regulation where thermal stability and tight voltage tolerance are critical in consumer power supplies, sensor interface references, and microcontroller reset circuitry.

Technical Context

This Zener diode employs planar epitaxial construction to achieve sharp breakdown characteristics and low dynamic impedance (60 Ω typ. at I_Z = 5 mA), enabling stable regulation even under light-load conditions. Its 7.5 V nominal working voltage places it in the mid-range of the PDZ-B series, where temperature coefficient crosses zero near 6–7 V - resulting in a +4.0 mV/K drift that supports predictable, monotonic compensation in temperature-sensitive references.

The device is rated for 400 mW total power dissipation on FR4 PCB with standard SOD323 footprint, and exhibits 170 pF junction capacitance at 0 V (1 MHz), making it suitable for DC and low-frequency (<100 kHz) regulation rather than RF or high-speed transient suppression.

Key Specifications

Pinout & Package

The PDZ7.5BF is housed in a surface-mount SOD323 plastic package with two terminals: anode (A) and cathode (K). The cathode is marked by a visible bar on the device body. This compact 1.35 mm × 1.75 mm outline supports high-density PCB layouts and reflow-compatible assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX55C7V5 and MMSZ5235B, PDZ7.5BF delivers superior voltage accuracy (±2 % vs. ±5 %), lower leakage (0.5 μA vs. ≥1.0 μA), and optimized SOD323 packaging for modern SMT manufacturing - making it the preferred choice for precision, low-power, and space-constrained designs.

Availability

PDZ7.5BF is available at Aetrix Electronics and suitable for microcontroller reset circuits, low-power sensor bias references, USB-C voltage clamping, and industrial signal conditioning requiring stable component supply and guaranteed long-term sourcing.

Supply support for PDZ7.5BF 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-grade and industrial-standard components.

PDZ7.5BF belongs to the PDZ-B series of low-power Zener diodes engineered for general-purpose voltage regulation in consumer, computing, and industrial SMT applications - emphasizing small size, tight tolerance, and robust thermal performance.

FAQ

What is the maximum continuous Zener current for PDZ7.5BF?

The PDZ7.5BF is rated for 400 mW total power dissipation at T_amb ≤ 25 °C on FR4 PCB. At its nominal 7.5 V Zener voltage, this corresponds to a maximum continuous Zener current of approximately 53 mA (400 mW ÷ 7.5 V). Derating applies above 25 °C per the published power derating curve.

Does PDZ7.5BF support bidirectional ESD protection?

No - PDZ7.5BF is a unidirectional Zener diode optimized for reverse-bias regulation. Its forward voltage is 0.9 V at 10 mA, but it lacks symmetric breakdown or specified ESD parameters (e.g., IEC 61000-4-2 rating), so it is not intended or characterized for bidirectional ESD clamping.

How does the +4.0 mV/K temperature coefficient affect circuit design?

The +4.0 mV/K coefficient means V_Z increases by ~0.3 V over a 75 °C ambient range (e.g., −25 °C to +50 °C). Designers use this predictable drift to offset negative TC components (e.g., bandgap references) or implement simple two-point calibration in non-critical references.

Can PDZ7.5BF replace PDZ7.5B in existing designs?

Yes - PDZ7.5BF is a direct functional and form-fit replacement for PDZ7.5B, sharing identical electrical specifications, SOD323 package, pinout, and marking (ZC). The "F" suffix denotes enhanced process control and tighter test limits, with no layout or schematic changes required.