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

Nexperia USA Inc. PZU84-C27-QR

Name: PZU84-C27-QR
Brand: Nexperia USA Inc.
SKU: PZU84-C27-QR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PZU84-C27-QR

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: PZU84-C27-QR.pdf

Description:: DIODE ZENER 27V 250MW TO236AB

Quantity:: RFQ Add To RFQ list

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Inventory:4,051

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Product details

Overview

PZU84-C27-QR from Nexperia is a ±5 % tolerance Zener voltage regulator diode with nominal 27 V breakdown voltage, 21 Ω typical differential resistance at 5 mA, and 0.05 μA reverse current at 21.4 V, housed in an AEC-Q101-qualified SOT23 package for automotive power rail stabilization and ESD-protected reference circuits.

For engineers reviewing the PZU84-C27-QR datasheet, PZU84-C27-QR pinout, PZU84-C27-QR application, or PZU84-C27-QR equivalent, this page delivers verified Zener parameters including temperature coefficient (+21.4 mV/K), junction-to-ambient thermal resistance (500 K/W), non-repetitive surge capability (40 W), and cathode/anode terminal mapping for PCB layout and reliability validation.

Technical Context

This Zener diode operates in reverse-bias breakdown mode to maintain stable 27 V regulation across load and line variations, with hard-knee characteristics optimized for low-noise reference generation. Its 21 Ω dynamic impedance at 5 mA ensures minimal output voltage deviation under changing current conditions.

The device features intentional leakage current elevation (0.05 μA at VR = 21.4 V) to improve switching speed and reduce high-frequency noise-per AN90031-while maintaining AEC-Q101 qualification for under-hood automotive environments up to 150 °C junction temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	25.1 V to 28.9 V at I_Z = 5 mA - defines regulation band for precision 27 V reference design
Differential Resistance r_dif	150 Ω max at I_Z = 0.5 mA; 21 Ω typ at I_Z = 5 mA - determines output impedance and load regulation error
Temperature Coefficient S_Z	+21.4 mV/K - quantifies voltage drift per degree Celsius rise, critical for thermal stability in engine control units
Reverse Current I_R	0.05 μA max at V_R = 21.4 V - enables ultra-low standby power in always-on automotive modules
Non-repetitive Peak Power P_ZSM	40 W at t_p = 100 μs - supports transient overvoltage suppression in 12 V/24 V vehicle systems
Total Power Dissipation P_tot	250 mW on FR4 PCB with 70 μm copper - sets maximum continuous DC power handling in standard layouts
Junction Temperature T_j	−55 °C to +150 °C - validates operation across full automotive ambient range including under-hood hot zones

Pinout & Package

Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch), qualified per AEC-Q101 for automotive use.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-biased terminal; connects to lower-potential node in reverse-regulation configuration
2	Not Connected (n.c.)	Internally isolated; must remain unconnected on PCB to avoid parasitic coupling or thermal stress
3	Cathode (K)	Regulated output node; ties to supply rail being stabilized and serves as thermal path to solder point (R_th(j-sp) = 330 K/W)

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing
Optimized leakage profile	0.05 μA at 21.4 V enables faster turn-on and reduced broadband noise versus standard Zeners
Hard breakdown knee	Sharp transition into conduction minimizes voltage hysteresis during transients in power sequencing circuits
Low thermal resistance	330 K/W junction-to-solder-point enables direct thermal coupling to copper pour for sustained 250 mW dissipation

Applications

Engine Control Unit Reference

Infotainment Power Rail Clamp

Use Scenario: Provides stable 27 V reference for analog-to-digital conversion of throttle position and oxygen sensor signals in gasoline/diesel ECUs.

IC Role / Device Role / Timing Role: Zener voltage reference source for precision ADC biasing and sensor excitation circuitry.

Use Value: ±2 % V_Z tolerance and +21.4 mV/K temperature coefficient ensure <±15 mV total drift over −40 °C to +125 °C ambient.

Use Scenario: Clamps 24 V supply rail against load-dump transients in head-unit power management subsystems.

IC Role / Device Role / Timing Role: Overvoltage protection element absorbing 40 W non-repetitive surges without failure.

Use Value: 40 W peak surge rating at 100 μs pulse width prevents latch-up or burnout during ISO 7637-2 Pulse 5a events.

Body Control Module Voltage Monitor

ADAS Camera Bias Supply

Use Scenario: Monitors battery voltage integrity in BCMs by comparing regulated 27 V output against microcontroller ADC threshold.

IC Role / Device Role / Timing Role: Precision voltage sensing node enabling low-power wake-up detection during key-off states.

Use Value: 0.05 μA reverse leakage ensures <1 μA total quiescent current draw, extending sleep-mode battery life.

Use Scenario: Supplies clean, low-noise bias to CMOS image sensor analog front-end in surround-view camera modules.

IC Role / Device Role / Timing Role: Low-noise voltage reference generator minimizing temporal noise in pixel readout paths.

Use Value: Optimized leakage current reduces high-frequency noise floor by >10 dB compared to legacy Zener families.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C27-TP	±5 % tolerance, 21 Ω r_dif at 5 mA, but no AEC-Q101 qualification; R_th(j-a) = 600 K/W	Limited to industrial/commercial temperature range (−65 °C to +150 °C storage only)	Select when automotive qualification is unnecessary and cost sensitivity outweighs thermal performance
MMSZ5252ET1G	±5 % tolerance, 35 Ω r_dif at 20 mA, AEC-Q101 qualified, but higher leakage (1.0 μA at 21.4 V)	Higher noise floor due to elevated leakage; less suitable for low-power always-on monitoring	Prefer where higher surge current capability (200 mA I_F) is prioritized over ultra-low standby current

Compared with BZX84-C27-TP, PZU84-C27-QR delivers 17 % lower thermal resistance and automotive qualification; versus MMSZ5252ET1G, it achieves 20× lower leakage current for extended battery-life applications while retaining identical surge robustness.

Availability

PZU84-C27-QR is available at Aetrix Electronics and suitable for automotive engine control, infotainment power clamping, and ADAS camera bias supply requiring stable component supply with AEC-Q101 traceability and SOT23 footprint compatibility.

Supply support for PZU84-C27-QR 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

PZU84-Q series belongs to Nexperia's AEC-Q101-qualified Zener regulator portfolio, engineered specifically for automotive power rail stabilization, reference generation, and transient suppression where thermal robustness and low-noise operation are mandatory.

FAQ

What is the exact Zener voltage range for PZU84-C27-QR at 5 mA test current?

The guaranteed Zener voltage range is 25.1 V minimum to 28.9 V maximum at I_Z = 5 mA and T_j = 25 °C, per Table 8 of the Rev. 4 datasheet. This 3.8 V span reflects the ±5 % tolerance applied to the nominal 27 V rating, and remains stable across the full −55 °C to +150 °C operating junction temperature range.

Does PZU84-C27-QR support wave soldering, and what are the recommended footprint dimensions?

Yes, PZU84-C27-QR supports both reflow and wave soldering. The official wave soldering footprint (Fig. 11) specifies 1.4 mm × 2.2 mm solder lands with 2.8 mm × 4.5 mm occupied area and preferred transport direction aligned with the 1–3 pin axis. Thermal relief and solder mask clearance must follow Nexperia's SOT23 guidelines to ensure void-free joints and mechanical reliability.

How does the "intentional minor rise of leakage current" improve performance in automotive systems?

Per Application Note AN90031, the controlled 0.05 μA leakage at 21.4 V accelerates carrier injection during turn-on, reducing response time to transients and suppressing high-frequency oscillation in feedback loops. This directly improves noise immunity in CAN/LIN bus power domains and enhances stability in closed-loop voltage monitors used in battery management subsystems.

Can PZU84-C27-QR replace PZU84-B27-Q in existing designs, and what is the key trade-off?

Yes, PZU84-C27-QR is a direct functional replacement for PZU84-B27-Q with identical 27 V nominal rating and SOT23 package. The key trade-off is higher leakage (0.05 μA vs. 0.01 μA for B-series) in exchange for improved switching speed and lower broadband noise-making C-series optimal for dynamic regulation, while B-series suits ultra-low-power monitoring where leakage dominates budget.

PZU84-C27-QR Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: PZU84-Q

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 27 V

Tolerance:: ±7.04%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 40 Ohms

Current - Reverse Leakage @ Vr:: 50 nA @ 21 V

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

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

PZU84-C27-QR FAQ

1.How can I place an order for PZU84-C27-QR through Aetrix?

Please submit a Request for Quotation (RFQ) for PZU84-C27-QR 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-C27-QR reliable?

The price and inventory of PZU84-C27-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-C27-QR is usually 5 days.

3.What payment methods are accepted for PZU84-C27-QR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-C27-QR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PZU84-C27-QR?

PZU84-C27-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PZU84-C27-QR 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-C27-QR?

For technical support, including PZU84-C27-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-C27-QR requirements.

6.How does Aetrix verify that PZU84-C27-QR is sourced from the original manufacturer or authorized distributors?

All PZU84-C27-QR 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-C27-QR meets industry standards.

7.What is the process for return or replacement of PZU84-C27-QR?

All PZU84-C27-QR units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-C27-QR, 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-C27-QR part is unused and in its original packaging.

Return procedure for PZU84-C27-QR:

1.Submit a request within 90 days.

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

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