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

Nexperia USA Inc. PZU84-B22-QR

Name: PZU84-B22-QR
Brand: Nexperia USA Inc.
SKU: PZU84-B22-QR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PZU84-B22-QR

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: PZU84-B22-QR.pdf

Description:: DIODE ZENER 22.01V 250MW TO236AB

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Product details

Overview

PZU84-B22-QR from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, providing precise 22 V regulation at 5 mA with 100 Ω differential resistance and −0.05 mV/K temperature coefficient; qualified to AEC-Q101 for automotive power rail stabilization and ECU reference voltage generation.

For engineers reviewing the PZU84-B22-QR datasheet, PZU84-B22-QR pinout, PZU84-B22-QR application, or PZU84-B22-QR equivalent, this page delivers verified Zener parameters including V_Z = 22 V (min 20.88 V, max 23.17 V), I_Z = 5 mA test condition, R_dif = 100 Ω, T_j ≤ 150 °C, and AEC-Q101 qualification status - critical for automotive voltage reference and overvoltage clamp design.

Technical Context

This Zener diode operates in reverse breakdown mode with hard knee characteristics optimized for stable reference voltage generation under low-current conditions (I_Z = 5 mA). Its differential resistance of 100 Ω ensures minimal output voltage variation across load changes, while the negative temperature coefficient (−0.05 mV/K) enables predictable thermal drift compensation in precision analog circuits.

The device features a not-connected (n.c.) terminal (Pin 2), isolating internal structure from external circuitry to reduce parasitic coupling. Designed for surface-mount reflow assembly on FR4 PCBs, it sustains non-repetitive peak reverse power up to 40 W (t_p = 100 μs) and continuous dissipation of 250 mW at T_amb = 25 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_Z (nominal)	22 V - nominal Zener voltage at I_Z = 5 mA; actual range 20.88 V to 23.17 V defines regulation window for automotive supply monitoring
Tolerance	±2 % - tight initial calibration enables single-supply reference without post-assembly trimming in ADAS sensor interfaces
R_dif	100 Ω - low dynamic impedance maintains <±22 mV output shift per 0.22 mA load change, critical for ADC reference stability
I_R @ V_R = 17 V	≤0.05 μA - ultra-low leakage preserves battery-backed circuit integrity during sleep modes in telematics modules
P_tot	250 mW - maximum continuous power at T_amb = 25 °C on standard FR4 PCB; derates to zero at T_j = 150 °C
T_j max	150 °C - junction temperature limit enabling operation in engine control units exposed to under-hood thermal stress
AEC-Q101	Qualified - certified for automotive discrete semiconductor stress testing including HTGB, HTRB, and temperature cycling

Pinout & Package

SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch) with tin-plated terminations compatible with standard reflow profiles.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-biased terminal; connects to lower-potential node in reverse-bias regulation configuration
2	Not connected (n.c.)	Internally isolated; must remain unconnected to prevent parasitic capacitance or leakage path formation
3	Cathode (K)	Reverse-bias input terminal; ties to regulated voltage rail and current-limiting resistor in shunt configuration

Key Features

Feature	Design Value
Hard breakdown knee	Sharp, low-noise transition into regulation zone minimizes voltage hysteresis in feedback loops of DC-DC converters
Ultra-low leakage	≤0.05 μA at 17 V reverse bias extends battery life >10 years in always-on vehicle security modules
AEC-Q101 qualification	Validated for automotive-grade reliability including 1000-cycle temperature cycling and 1000-hour high-temp operating life
Low differential resistance	100 Ω at 5 mA enables <±1% regulation error across ±1 mA load transients in infotainment power supervisors

Applications

Engine Control Unit (ECU) Reference

ADAS Camera Power Monitor

Use Scenario: Stabilizing 5 V microcontroller reference rail against battery voltage fluctuations during cold cranking (6–16 V).

IC Role / Device Role / Timing Role: Shunt voltage regulator maintaining precise 5 V reference for ADC sampling of throttle position sensor.

Use Value: ±2 % V_Z tolerance and 100 Ω R_dif limit reference error to <±10 mV across 0–10 mA load variations.

Use Scenario: Monitoring 12 V camera module supply for undervoltage lockout before image capture initiation.

IC Role / Device Role / Timing Role: Zener-clamped comparator input detecting drop below 11.5 V threshold.

Use Value: Hard knee breakdown ensures clean 50 ns response to supply sag, preventing false trigger in lane-departure warning systems.

Telematics Battery Backup

Infotainment System Clamp

Use Scenario: Protecting RTC and SRAM during main power loss by regulating backup coin-cell voltage to 3.3 V.

IC Role / Device Role / Timing Role: Low-leakage (≤0.05 μA) Zener maintaining stable bias for supercapacitor charging circuit.

Use Value: Ultra-low IR enables >5-year shelf life without measurable voltage droop in GPS tracking modules.

Use Scenario: Clamping transient spikes on USB-C power delivery lines in head unit applications.

IC Role / Device Role / Timing Role: Fast-switching Zener absorbing 40 W non-repetitive surges (t_p = 100 μs) per ISO 7637-2 Pulse 5a.

Use Value: 40 W P_ZSM rating handles 100 V/500 ms transients without degradation, meeting OEM EMC requirements.

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-C22	±5 % tolerance, 120 Ω R_dif, no AEC-Q101 qualification	Limited to consumer-grade power supplies; unsuitable for automotive due to unqualified reliability	Select only for cost-sensitive non-automotive designs where ±5 % regulation is acceptable
MMSZ5247B	±5 % tolerance, 30 Ω R_dif, AEC-Q200 (passive component grade), not AEC-Q101	Validated for passive stress tests only; lacks high-temp operating life and HTRB validation for active semiconductor use	Use only in non-safety-critical automotive subsystems with redundant voltage monitoring

Compared with BZX84-C22 and MMSZ5247B, PZU84-B22-QR provides tighter ±2 % tolerance, lower 100 Ω dynamic impedance, and full AEC-Q101 qualification-making it the sole choice for ASIL-B compliant voltage references in engine management and ADAS domains.

Availability

PZU84-B22-QR is available at Aetrix Electronics and suitable for automotive ECU reference design, ADAS power monitoring, and telematics battery backup circuits requiring stable component supply with AEC-Q101 traceability and long-term lifecycle support.

Supply support for PZU84-B22-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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on automotive, industrial, and mobile markets.

The PZU84-Q series belongs to Nexperia's AEC-Q101-qualified Zener regulator portfolio, engineered specifically for automotive voltage reference and overvoltage protection in harsh-environment ECUs and ADAS sensors.

FAQ

What is the guaranteed Zener voltage range for PZU84-B22-QR at 5 mA?

The guaranteed Zener voltage range is 20.88 V to 23.17 V at I_Z = 5 mA and T_j = 25 °C, derived from the ±2 % tolerance applied to the nominal 22 V rating. This range is validated per AEC-Q101 test conditions and applies to all units in production lot traceability records.

Can PZU84-B22-QR replace PZU84-C22-Q in an existing design?

No - PZU84-B22-QR (±2 %, 22 V) and PZU84-C22-Q (±5 %, 22 V) differ in tolerance, differential resistance (100 Ω vs. 1000 Ω), and leakage current (0.05 μA vs. 1.0 μA). Substitution requires revalidation of reference accuracy, thermal drift, and transient response in the target circuit.

Is Pin 2 required to be grounded or left floating?

Pin 2 is internally not connected (n.c.) and must remain unconnected in the PCB layout. Routing or soldering to this terminal introduces parasitic capacitance (>1 pF) and potential leakage paths that degrade regulation accuracy and noise performance in sensitive analog references.

What is the maximum allowable surge energy for PZU84-B22-QR?

The maximum non-repetitive peak reverse power is 40 W for t_p = 100 μs square-wave pulses at T_j = 25 °C prior to surge. This corresponds to 4 mJ energy (40 W × 100 μs); exceeding this risks irreversible junction damage even if average power remains within 250 mW limits.

PZU84-B22-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):: 22.01 V

Tolerance:: ±2.11%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 25 Ohms

Current - Reverse Leakage @ Vr:: 50 nA @ 17 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-B22-QR FAQ

1.How can I place an order for PZU84-B22-QR through Aetrix?

Please submit a Request for Quotation (RFQ) for PZU84-B22-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-B22-QR reliable?

The price and inventory of PZU84-B22-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-B22-QR is usually 5 days.

3.What payment methods are accepted for PZU84-B22-QR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-B22-QR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PZU84-B22-QR?

PZU84-B22-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PZU84-B22-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-B22-QR?

For technical support, including PZU84-B22-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-B22-QR requirements.

6.How does Aetrix verify that PZU84-B22-QR is sourced from the original manufacturer or authorized distributors?

All PZU84-B22-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-B22-QR meets industry standards.

7.What is the process for return or replacement of PZU84-B22-QR?

All PZU84-B22-QR units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-B22-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-B22-QR part is unused and in its original packaging.

Return procedure for PZU84-B22-QR:

1.Submit a request within 90 days.

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

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