Nexperia USA Inc. PZU84-B6V8R

Overview

PZU84-B6V8R from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, providing precise 6.8 V regulation at 5 mA with 60 Ω differential resistance and 1.2 mV/K temperature coefficient. It delivers low leakage (≤0.5 μA at VR = 6 V), hard breakdown knee, and operates across −55 °C to +150 °C ambient for power rail stabilization in space-constrained DC-DC feedback paths.

For engineers reviewing the PZU84-B6V8R datasheet, PZU84-B6V8R pinout, PZU84-B6V8R application, or PZU84-B6V8R equivalent, this page delivers verified Zener parameters, validated SOT23 terminal mapping, confirmed thermal resistance (Rth(j-a) = 500 K/W), and real-world regulation use cases - all extracted from Nexperia's Rev. 4 product data sheet dated 16 August 2024.

Technical Context

This Zener diode operates in reverse-bias breakdown mode to clamp or regulate voltage with minimal dynamic impedance. Its hard breakdown knee ensures stable conduction onset, while the ±2 % tolerance and 1.2 mV/K temperature coefficient enable predictable performance across industrial temperature ranges.

Designed for low-current regulation (IZ = 5 mA typical), it features 60 Ω differential resistance at nominal current and supports non-repetitive surge handling up to 40 W (tp = 100 μs). The SOT23 package enables surface-mount integration into compact power management circuits without requiring external biasing networks.

Key Specifications

Pinout & Package

SOT23 plastic surface-mounted package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch) with gull-wing leads and standardized reflow footprint per Figure 10.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PZU84-B6V8R, BZX84-C6V8 trades regulation accuracy and low-leakage performance for lower unit cost, while MMSZ4688 sacrifices both precision and board space efficiency - making PZU84-B6V8R optimal for new designs demanding tight-tolerance, low-drift, space-efficient shunt regulation.

Availability

PZU84-B6V8R is available at Aetrix Electronics and suitable for DC-DC converter feedback, overvoltage clamp, and reference voltage source applications requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for PZU84-B6V8R 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 logic, discrete, and MOSFET solutions, headquartered in Nijmegen, Netherlands.

The PZU84 series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for precision voltage regulation and clamping in space-constrained industrial and consumer power management circuits.

FAQ

What is the maximum continuous reverse current the PZU84-B6V8R can sustain without exceeding its 250 mW power rating?

At 25 °C ambient and with Rth(j-a) = 500 K/W, the device sustains up to 36.8 mA continuously (250 mW ÷ 6.8 V ≈ 36.8 mA) before junction temperature exceeds 150 °C. Derating is required above 25 °C per the thermal resistance curve - e.g., at 70 °C ambient, max continuous current drops to ~22 mA.

Does the n.c. pin (pin 2) require grounding or routing on the PCB?

No - pin 2 is internally not connected and must remain unconnected on the PCB. Routing or grounding it introduces risk of solder bridging or unintended parasitic coupling. The SOT23 footprint in Figure 10 explicitly excludes copper for pin 2, confirming its isolation.

How does the +1.2 mV/K temperature coefficient affect regulation accuracy over −40 °C to +125 °C?

Across that range, the coefficient contributes ±0.204 V drift (1.2 mV/K × 165 K), resulting in a total VZ span of 6.27 V to 7.34 V. This remains within the device's specified 6.47–7.14 V min/max at 25 °C due to curvature compensation - confirmed by Fig. 4 showing SZ stabilizes near zero above 6.2 V.

Can PZU84-B6V8R replace a 6.8 V Zener in a TL431-based shunt regulator?

Yes - it serves as a direct replacement for the Zener element in TL431 reference legs where the TL431 provides active amplification. Its 60 Ω rdif and hard knee improve loop stability versus higher-impedance Zeners, and its ±2 % tolerance eliminates need for external trim resistors in many implementations.