Nexperia USA Inc. BZX84W-C8V2F

Overview

BZX84W-C8V2F from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 8.2 V nominal breakdown voltage at 5 mA, 275 mW total power dissipation, and 700 nA reverse leakage at 5 V, used for precision voltage reference and local regulation in space-constrained analog and power management circuits.

For engineers reviewing the BZX84W-C8V2F datasheet, BZX84W-C8V2F pinout, BZX84W-C8V2F application, or BZX84W-C8V2F equivalent, key selection criteria include Zener voltage tolerance, differential resistance (80 Ω at 5 mA), temperature coefficient (+4.6 mV/K), junction-to-ambient thermal resistance (455 K/W), and SC-70 footprint compatibility with high-frequency decoupling and low-power biasing designs.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable 8.2 V output across load and line variations, with a typical differential resistance of 80 Ω at 5 mA test current, enabling tight regulation under dynamic current conditions. Its positive temperature coefficient of +4.6 mV/K supports predictable drift compensation in temperature-sensitive references.

The device uses silicon planar epitaxial construction in a leadless SOT323 package, achieving 150 °C maximum junction temperature and 455 K/W thermal resistance on FR4 PCBs. It exhibits 150 pF capacitance at 1 MHz and 0 V bias, making it suitable for moderate-speed regulation without signal integrity compromise.

Key Specifications

Pinout & Package

Package: SOT323 (SC-70), 3-terminal leadless surface-mount plastic package with 1.3 mm × 1.8 mm footprint, 0.65 mm pitch, and 0.9 mm height-optimized for automated placement and reflow soldering on dense PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5231BS and BZX84-C8V2, BZX84W-C8V2F offers superior high-frequency performance (150 pF vs. ≥200 pF) and smaller footprint (SOT323 vs. SOT-23), making it optimal for next-generation compact, high-speed regulation where thermal load stays within 275 mW.

Availability

BZX84W-C8V2F is available at Aetrix Electronics and suitable for power supply clamping, ADC reference stabilization, microcontroller reset supervision, and low-power sensor biasing requiring stable component supply across automotive infotainment, industrial IoT gateways, and portable medical devices.

Supply support for BZX84W-C8V2F 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 delivering high-performance, reliable discrete, logic, and MOSFET solutions with focus on efficiency, miniaturization, and robustness for mass-market electronics.

BZX84W series belongs to Nexperia's general-purpose Zener diode product line, engineered for cost-sensitive, space-constrained voltage regulation and reference applications across consumer, industrial, and communications equipment.

FAQ

What is the maximum continuous reverse current the BZX84W-C8V2F can handle?

The device supports up to 200 mA forward current, but its Zener operation is specified at 5 mA test current. Maximum steady-state reverse current is limited by power dissipation: at 8.2 V, I_Z(max) = 275 mW / 8.2 V ≈ 33.5 mA. Exceeding this risks thermal runaway unless derated per ambient temperature.

Can BZX84W-C8V2F be used in place of a 2-pin Zener diode?

Yes, but Pin 2 (n.c.) must remain unconnected-no trace or solder mask opening required. The SOT323 footprint matches standard 2-pin layouts if the n.c. pad is omitted; however, routing should avoid accidental shorting to adjacent nets due to the third pad presence.

How does the +4.6 mV/K temperature coefficient affect long-term reference stability?

Over a 100 °C range (−55 °C to +45 °C), voltage drift totals +460 mV-approximately ±5.6 % of 8.2 V. For precision applications, this requires either temperature compensation in firmware or pairing with a negative-coefficient reference to cancel drift.

Is BZX84W-C8V2F qualified for automotive applications?

No. Per Nexperia's revision history, this part is non-automotive qualified. Automotive-grade alternatives (e.g., BZX84W-Q series) undergo AEC-Q101 stress testing and have extended temperature qualification; BZX84W-C8V2F is intended for industrial, consumer, and communications use only.