Nexperia USA Inc. BZX84W-B62F

Overview

BZX84W-B62F from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 62 V nominal Zener voltage at 5 mA, 150 Ω differential resistance, and 64.4 mV/K temperature coefficient. It delivers stable reference voltage in low-power analog circuits, power supply feedback loops, and overvoltage protection stages where precision and high-frequency response are required.

For engineers reviewing the BZX84W-B62F datasheet, BZX84W-B62F pinout, BZX84W-B62F application, or BZX84W-B62F equivalent, this page provides verified Zener voltage, thermal resistance, reverse leakage, forward voltage, and package-specific soldering footprint data essential for PCB layout, voltage reference design, and reliability validation in industrial and consumer electronics.

Technical Context

This Zener diode operates in reverse breakdown mode with a tightly controlled 62 V nominal Zener voltage (min 60.8 V, max 63.2 V) at I_Z = 5 mA. Its differential resistance of 150 Ω ensures minimal voltage variation under load current shifts, while its positive temperature coefficient of +64.4 mV/K supports predictable drift compensation in temperature-stable references.

The device uses a planar epitaxial silicon process optimized for low noise and fast transient response, with typical junction capacitance of 35 pF at 1 MHz and 0 V bias. It is rated for 275 mW total power dissipation on FR4 PCB with single-sided copper, and withstands non-repetitive peak reverse power up to 40 W for 100 µs pulses.

Key Specifications

Pinout & Package

SOT323 (SC-70) leadless surface-mount plastic package: 1.35 mm × 1.75 mm body, 0.65 mm pitch, 0.45 mm height, 3-terminal configuration with exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84W-C62, the BZX84W-B62F offers tighter voltage control and lower impedance for improved regulation accuracy; versus MMSZ4697T1G, it trades power margin for miniaturization and thermal efficiency in space-constrained designs.

Availability

BZX84W-B62F is available at Aetrix Electronics and suitable for power supply feedback, overvoltage clamping, and voltage reference generator applications requiring stable component supply, consistent parametric performance, and long-term obsolescence management.

Supply support for BZX84W-B62F 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-qualified and standard-grade components.

The BZX84W series belongs to Nexperia's general-purpose Zener diode product line, engineered for stable voltage regulation in cost-sensitive industrial, consumer, and computing applications where compact size and parametric consistency are critical.

FAQ

What is the maximum continuous Zener current for BZX84W-B62F at 25 °C ambient?

The maximum continuous Zener current is calculated from P_tot = 275 mW and V_Z = 62 V, yielding I_Zmax ≈ 4.4 mA. This assumes FR4 PCB mounting with single-sided copper and tin plating; derating is required above 25 °C ambient per the 455 K/W thermal resistance.

Is pin 2 (n.c.) electrically isolated or internally tied to substrate?

Pin 2 is explicitly designated "not connected" in Nexperia's official pinning table and graphic symbol. It is fully electrically isolated-no internal bond wire, die connection, or substrate tie exists. PCB layout must omit any trace or solder mask opening for this terminal.

How does the +64.4 mV/K temperature coefficient affect regulation accuracy over −40 °C to +125 °C?

Over that 165 K range, the Zener voltage shifts by +10.6 V (64.4 mV/K × 165 K), resulting in a 62 V device varying from ~62 V to ~72.6 V. This drift must be accommodated in system-level tolerance budgets; compensation techniques like matched diode pairs are recommended for high-stability references.

Can BZX84W-B62F replace BZX84W-B62 in existing designs?

Yes-BZX84W-B62F is a direct replacement for BZX84W-B62. The "F" suffix denotes Nexperia's standard marking code for the B62 variant (per Table 4: "BZX84W-B62 L8%"), indicating identical electrical specs, package, and performance; no layout or schematic changes are needed.