Nexperia USA Inc. BZX84W-C7V5F

Overview

BZX84W-C7V5F from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT323 (SC-70) package, providing 7.5 V nominal regulation at 5 mA, with 80 Ω differential resistance and 4.0 mV/K temperature coefficient. It delivers stable reference voltage for low-power analog circuits, power supply feedback loops, and overvoltage protection in consumer and industrial electronics.

For engineers reviewing the BZX84W-C7V5F datasheet, BZX84W-C7V5F pinout, BZX84W-C7V5F application, or BZX84W-C7V5F equivalent, key selection factors include Zener voltage tolerance, thermal coefficient, junction-to-ambient thermal resistance (455 K/W), reverse leakage current (1 µA at 5 V), and SOT323 footprint compatibility with high-density PCB layouts.

Technical Context

This Zener diode operates in reverse breakdown to maintain a stable 7.5 V reference across load and line variations. Its ±5 % tolerance (C-series) and 4.0 mV/K positive temperature coefficient enable predictable drift behavior in ambient temperatures from −55 °C to +150 °C.

Designed for surface-mount use on FR4 PCBs with single-sided copper, it supports continuous dissipation up to 275 mW and withstands non-repetitive surge pulses of 40 W (100 µs). The 3-pin SOT323 package includes an unconnected terminal (Pin 2), simplifying layout while maintaining mechanical robustness.

Key Specifications

Pinout & Package

SOT323 (SC-70) leadless surface-mount plastic package with 3 terminals; compact 2.2 mm × 1.35 mm footprint and 0.65 mm pitch; optimized for reflow soldering per IPC-7095 guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84W-C7V5F, the BZX84W-B7V5 offers superior voltage accuracy at identical thermal and dynamic performance, while MMBZ5236BS-7-F trades regulation precision for dual-channel integration and slightly inferior impedance - making the C7V5F optimal for cost-sensitive, single-Zener, high-density SOT323 designs.

Availability

BZX84W-C7V5F is available at Aetrix Electronics and suitable for power supply feedback reference, overvoltage clamp protection, and low-power sensor biasing requiring stable component supply across production volumes from prototype to mass manufacturing.

Supply support for BZX84W-C7V5F 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 essential semiconductors for automotive, industrial, and consumer applications, with leadership in logic, discrete, and MOSFET technologies.

The BZX84W series belongs to Nexperia's general-purpose Zener diode product line, engineered for reliable voltage regulation in space-constrained, high-frequency, and cost-sensitive SMT applications.

FAQ

What is the maximum continuous reverse current for stable regulation?

The BZX84W-C7V5F maintains regulation up to 5 mA per datasheet test condition, with absolute maximum reverse current rated at 200 mA. However, sustained operation above 20 mA requires thermal derating beyond 25 °C ambient due to its 455 K/W R_th(j-a); at 50 °C ambient, maximum continuous I_Z drops to ~15 mA to stay within 150 °C T_j limit.

How does the n.c. pin affect PCB layout and thermal performance?

Pin 2 is internally unconnected and electrically inert; it must be left floating on the PCB with no trace or pad connection. Its presence maintains mechanical symmetry in the SOT323 mold, improving placement yield and thermal uniformity during reflow - omitting it would reduce package rigidity and increase tombstoning risk without improving thermal resistance.

Can this Zener diode be used in AC signal clipping applications?

Yes - its 4 pF junction capacitance at 0 V and fast reverse recovery support clipping of signals up to 100 MHz. At 7.5 V DC bias, the effective clamping threshold becomes asymmetric (≈+8.2 V / ≈−0.7 V), enabling precision waveform shaping in audio and RF stages where low capacitance and repeatable knee voltage are critical.

Is BZX84W-C7V5F qualified for automotive applications?

No - per Nexperia's revision history (Rev. 2, Jan 2023), the BZX84W series is explicitly non-automotive qualified. It lacks AEC-Q200 stress testing and automotive-grade process controls. For automotive use, Nexperia recommends the BZX84W-Q series (e.g., BZX84W-Q7V5), which undergoes extended temperature cycling, humidity testing, and failure analysis per automotive standards.