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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. PZU84-C2V7R

Name: PZU84-C2V7R
Brand: Nexperia USA Inc.
SKU: PZU84-C2V7R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PZU84-C2V7R

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: PZU84-C2V7R.pdf

Description:: DIODE ZENER 2.7V 250MW TO236AB

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Product details

Overview

PZU84-C2V7R from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, rated for 2.50 V to 2.90 V nominal breakdown at 5 mA, with differential resistance ≤1000 Ω and reverse leakage ≤1.0 μA at 1.0 V, used for precision low-voltage reference and overvoltage clamping in power supply feedback loops.

For engineers reviewing the PZU84-C2V7R datasheet, PZU84-C2V7R pinout, PZU84-C2V7R application, or PZU84-C2V7R equivalent, this page delivers verified Zener parameters, validated SOT23 terminal mapping, confirmed thermal limits (T_j = 150 °C), and real-world regulation use cases - all extracted from Nexperia's Rev. 4 product data sheet dated 16 August 2024.

Technical Context

This device operates as a two-terminal shunt regulator, maintaining stable reverse-bias voltage across its cathode–anode terminals under varying load current (I_Z = 0.5 mA to 5 mA). Its hard breakdown knee and low dynamic impedance ensure minimal voltage deviation during transient load shifts.

Designed for low-noise, low-leakage operation, the PZU84-C2V7R exhibits temperature coefficient of −3.5 mV/K and junction-to-ambient thermal resistance of 500 K/W on FR4 PCB - enabling reliable performance in compact, thermally constrained designs without active cooling.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	2.50 V to 2.90 V at I_Z = 5 mA - defines precise clamping threshold for 2.7 V nominal rail protection
Tolerance	±2 % - ensures tight voltage matching across production batches for consistent feedback loop behavior
Differential Resistance (r_dif)	≤1000 Ω at I_Z = 5 mA - limits output voltage shift to ≤5 mV per 5 mA load change
Reverse Leakage (I_R)	≤1.0 μA at V_R = 1.0 V - minimizes quiescent current draw in battery-powered standby circuits
Power Dissipation (P_tot)	250 mW at T_amb = 25 °C - supports continuous regulation up to ~92 mA at 2.7 V without heatsinking
Junction Temperature (T_j)	−55 °C to +150 °C - enables operation in industrial ambient environments including automotive under-hood zones
Package	SOT23 - surface-mount footprint (2.9 mm × 1.3 mm × 1.0 mm) compatible with standard reflow profiles and automated assembly

Pinout & Package

SOT23 plastic surface-mount package with 1.9 mm pin pitch, 2.9 mm × 1.3 mm × 1.0 mm body dimensions, and tin-plated terminations for lead-free soldering compatibility.

Pin/Terminal	Circuit Role	Design Meaning
1 (Anode)	Anode connection	Connected to lower-potential node (e.g., ground or return path) during Zener operation
2 (n.c.)	Not connected	Internally unconnected terminal - must remain floating; no PCB trace or pad required
3 (Cathode)	Cathode connection	Connected to regulated voltage node (e.g., feedback divider tap); carries full Zener current

Key Features

Feature	Design Value
Hard breakdown knee	Ensures sharp, predictable conduction onset at V_Z, critical for accurate overvoltage detection
Very low leakage current	≤1.0 μA at 1.0 V reverse bias reduces error in high-impedance voltage dividers
Low dynamic impedance	≤1000 Ω at 5 mA stabilizes output against ripple and load transients in LDO feedback paths
Two tolerance options	±2 % (C-series) and ~±5 % (B-series) allow cost/performance trade-off selection per design requirement

Applications

USB Power Rail Clamping

Microcontroller Reset Circuit

Use Scenario: Protecting 3.3 V USB VBUS line from ESD-induced overshoot during hot-plug events.

IC Role / Device Role / Timing Role: Shunt clamp placed between VBUS and GND, conducting only above 2.7 V to divert surge energy.

Use Value: Leverages 2.5–2.9 V V_Z range and ≤1.0 μA leakage to avoid loading normal operation while clamping >3.0 V transients.

Use Scenario: Generating a stable reset threshold for an ARM Cortex-M0+ MCU operating at 3.3 V.

IC Role / Device Role / Timing Role: Zener referenced into comparator input to trigger reset when supply drops below 2.7 V.

Use Value: ±2 % tolerance ensures reset activation within 2.65–2.75 V window, meeting typical MCU reset spec of 2.7 V ±50 mV.

Low-Power Sensor Biasing

ADC Reference Stabilization

Use Scenario: Providing stable 2.7 V bias to a MEMS pressure sensor in a battery-powered IoT node.

IC Role / Device Role / Timing Role: Low-current Zener regulator sourcing <100 μA to sensor analog front-end.

Use Value: ≤1000 Ω r_dif and −3.5 mV/K temperature coefficient maintain bias stability across −40 °C to +85 °C operating range.

Use Scenario: Stabilizing reference voltage for a 12-bit SAR ADC in a portable medical monitor.

IC Role / Device Role / Timing Role: Shunt regulator supplying clean 2.7 V reference to ADC REF+ pin via RC filter.

Use Value: Hard breakdown knee and low noise characteristics prevent reference drift during digital switching events near ADC sampling instants.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C2V7	Same SOT23 package, ±5 % tolerance, higher r_dif (≤1500 Ω), 2.57–2.83 V V_Z range	Acceptable where tighter voltage accuracy is not required; higher leakage (≤5 μA at 1 V)	Select for cost-sensitive designs accepting wider regulation band and relaxed tempco (−3.5 to +2.0 mV/K)
MMSZ4678T1G	Same 2.7 V nominal, ±5 %, SOD-123 package (larger footprint), 250 mW rating, r_dif ≤1000 Ω	Requires different PCB layout; higher thermal resistance (625 K/W) limits high-temp performance	Choose when SOD-123 is already standardized in BOM or when higher surge robustness (P_ZSM = 40 W same) is needed with larger thermal mass

Compared with PZU84-C2V7R, BZX84-C2V7 trades ±2 % accuracy and lower leakage for lower unit cost, while MMSZ4678T1G offers identical electrical specs but demands larger board area and delivers inferior thermal performance in confined layouts.

Availability

PZU84-C2V7R is available at Aetrix Electronics and suitable for USB power protection, microcontroller reset generation, low-power sensor biasing, and ADC reference stabilization requiring stable component supply across industrial, medical, and consumer electronics programs.

Supply support for PZU84-C2V7R 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, headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.

The PZU84 series belongs to Nexperia's general-purpose Zener regulator portfolio, engineered specifically for precision voltage reference and clamping in space-constrained, low-power SMT applications where tight tolerance and low leakage are critical.

FAQ

What is the maximum continuous Zener current for PZU84-C2V7R at 25 °C ambient?

The device supports up to 92 mA continuous Zener current at 25 °C ambient, calculated from its 250 mW total power dissipation rating and nominal 2.7 V breakdown voltage (I_Z(max) = 250 mW / 2.7 V ≈ 92.6 mA). Derating is required above 25 °C per the 500 K/W junction-to-ambient thermal resistance.

Does PZU84-C2V7R have a connected pin 2, and what happens if it's soldered?

No - pin 2 is explicitly marked "n.c." (not connected) in Nexperia's official pinning diagram and must remain electrically floating. Soldering or routing to any net risks internal shorting or parametric shift, as the terminal has no internal bond wire or die connection. PCB footprints should omit copper for pin 2.

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

With a specified temperature coefficient of −3.5 mV/K, the Zener voltage shifts approximately −350 mV across a 100 K range. For a 2.7 V nominal device, this yields ~−13 % drift - mitigated in practice by using the diode in constant-current bias or pairing with complementary components in compensated references.

Can PZU84-C2V7R be used in avalanche mode for ESD protection?

No - it is designed and characterized exclusively for controlled Zener breakdown in the 2.5–2.9 V range. Its non-repetitive peak reverse power rating (40 W, 100 μs) applies only to transient clamping within datasheet-specified conditions, not sustained avalanche operation. Dedicated TVS diodes like PESD5V0S1BA are recommended for system-level ESD.

PZU84-C2V7R Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: PZU84

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 2.7 V

Tolerance:: ±5%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 100 Ohms

Current - Reverse Leakage @ Vr:: 20 µA @ 1 V

Voltage - Forward (Vf) (Max) @ If:: 900 mV @ 10 mA

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

PZU84-C2V7R FAQ

1.How can I place an order for PZU84-C2V7R through Aetrix?

Please submit a Request for Quotation (RFQ) for PZU84-C2V7R on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for PZU84-C2V7R reliable?

The price and inventory of PZU84-C2V7R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-C2V7R is usually 5 days.

3.What payment methods are accepted for PZU84-C2V7R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-C2V7R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PZU84-C2V7R?

PZU84-C2V7R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PZU84-C2V7R order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for PZU84-C2V7R?

For technical support, including PZU84-C2V7R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-C2V7R requirements.

6.How does Aetrix verify that PZU84-C2V7R is sourced from the original manufacturer or authorized distributors?

All PZU84-C2V7R products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PZU84-C2V7R meets industry standards.

7.What is the process for return or replacement of PZU84-C2V7R?

All PZU84-C2V7R units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-C2V7R, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The PZU84-C2V7R part is unused and in its original packaging.

Return procedure for PZU84-C2V7R:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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