Nexperia USA Inc. PZU84-B2V7R

Overview

PZU84-B2V7R from Nexperia is a general-purpose Zener voltage regulator diode in SOT23 package, providing precise 2.7 V nominal regulation at 5 mA with ±2 % tolerance, 1000 Ω typical differential resistance, and hard breakdown knee for stable reference in low-current bias networks. It operates across −55 °C to +150 °C ambient and supports reverse power surges up to 40 W (100 μs).

For engineers reviewing the PZU84-B2V7R datasheet, PZU84-B2V7R pinout, PZU84-B2V7R application, or PZU84-B2V7R equivalent, key selection criteria include its 2.7 V Zener voltage, low leakage (<1.0 μA at VR = 2.5 V), 250 mW steady-state power rating, SOT23 footprint compatibility, and optimized performance in voltage reference and overvoltage clamp circuits.

Technical Context

This Zener diode delivers regulated reverse-bias voltage stabilization via avalanche or Zener breakdown depending on nominal voltage-PZU84-B2V7R (2.7 V) operates primarily in Zener mode with sharp knee characteristics. Its design emphasizes low dynamic impedance (1000 Ω @ IZ = 5 mA) and minimal temperature coefficient drift (−3.5 mV/K typical) for precision analog references.

The device features a three-terminal SOT23 package with Pin 1 (anode), Pin 2 (not connected), and Pin 3 (cathode), enabling unidirectional clamping and series-shunt regulation topologies. Thermal resistance from junction to ambient is 500 K/W on standard FR4 PCB, limiting continuous dissipation to 250 mW at 25 °C ambient.

Key Specifications

Pinout & Package

SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, single-sided 70 μm copper FR4 mounting.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C2V7, PZU84-B2V7R offers tighter tolerance and lower leakage but reduced power headroom; versus MMSZ4678T1G, it provides SOT23 compatibility and superior low-current stability at the expense of higher impedance above 5 mA.

Availability

PZU84-B2V7R is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection circuits, and low-power sensor biasing requiring stable component supply across industrial control, instrumentation, and embedded power management systems.

Supply support for PZU84-B2V7R 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 manufacturer headquartered in Nijmegen, Netherlands, specializing in high-volume logic, discrete, and MOSFET solutions with emphasis on reliability and energy efficiency.

The PZU84 series belongs to Nexperia's general-purpose Zener diode product line, engineered for stable voltage regulation and clamping in space-constrained, cost-sensitive consumer and industrial applications where SOT23 footprint and ±2 % accuracy are critical.

FAQ

What is the maximum continuous reverse current for PZU84-B2V7R at 25 °C?

The device supports up to 93 mA continuous reverse current at 25 °C ambient, calculated from Ptot = 250 mW and VZ = 2.7 V (IZmax = Ptot/VZ ≈ 93 mA). Derating is required above 25 °C per Rth(j-a) = 500 K/W; at 85 °C ambient, max IZ drops to ~55 mA to maintain Tj ≤ 150 °C.

Can PZU84-B2V7R be used in forward conduction mode?

Yes - its forward voltage is specified ≤0.9 V at 10 mA, making it suitable for low-drop polarity protection or signal-level rectification. However, it lacks forward surge rating documentation; for repetitive switching, dedicated Schottky diodes are preferred due to faster recovery and lower VF.

How does the "B" suffix in PZU84-B2V7R affect its electrical behavior?

The "B" denotes the ±2 % tolerance grade and places this variant in the low-leakage, hard-knee subgroup (PZU84-B2V7 to -B10). Compared to "C" grade (±5 %), it exhibits tighter VZ distribution, lower IR (<1.0 μA vs. ≤10 μA), and sharper breakdown - optimized for precision reference rather than general clamping.

Is Pin 2 internally connected, and what happens if it is soldered to ground?

No - Pin 2 is explicitly marked "n.c." (not connected) in the datasheet and has no internal die connection. Soldering it to ground creates a parasitic thermal path and may induce mechanical stress during reflow, but causes no electrical malfunction. Best practice is to leave it unconnected per Nexperia's recommended footprint.