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

Nexperia USA Inc. PZU84-C22R

Name: PZU84-C22R
Brand: Nexperia USA Inc.
SKU: PZU84-C22R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PZU84-C22R

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: PZU84-C22R.pdf

Description:: DIODE ZENER 22V 250MW TO236AB

Quantity:: RFQ Add To RFQ list

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Inventory:2,744

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Product details

Overview

PZU84-C22R from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, providing precise 22 V nominal regulation at 5 mA with 100 Ω differential resistance and 0.05 μA reverse current at 17 V, used for low-power reference and overvoltage protection in power supply feedback loops.

For engineers reviewing the PZU84-C22R datasheet, PZU84-C22R pinout, PZU84-C22R application, or PZU84-C22R equivalent, this page delivers verified Zener parameters including V_Z = 20.88–23.17 V, r_dif = 100 Ω, I_R ≤ 0.05 μA @ V_R = 17 V, thermal resistance R_th(j-a) = 500 K/W, and SOT23 pin configuration with anode (Pin 1), n.c. (Pin 2), cathode (Pin 3).

Technical Context

This Zener diode operates in reverse breakdown to maintain stable voltage under varying load and temperature conditions. Its hard breakdown knee and low leakage current support precision analog reference generation and noise-sensitive regulation circuits.

The device features two tolerance series (±2 % and ~±5 %) and is segmented into sub-families: PZU84-Bxx devices prioritize fast switching and noise reduction via controlled leakage rise, while PZU84-Cxx variants-including PZU84-C22R-deliver very low dynamic impedance and minimal leakage at low currents.

Key Specifications

Parameter	Value and Actual Design Meaning
V_Z (nominal)	22 V - Regulated voltage at I_Z = 5 mA, with min/max of 20.88 V / 23.17 V defining ±2 % tolerance band.
r_dif	100 Ω - Differential resistance at I_Z = 5 mA; determines output impedance and regulation sensitivity to current changes.
I_R @ V_R = 17 V	≤ 0.05 μA - Ultra-low reverse leakage ensures minimal error current in high-impedance reference nodes.
P_tot	250 mW - Maximum continuous power dissipation on FR4 PCB with standard footprint; sets upper bound for safe bias current.
R_th(j-a)	500 K/W - Junction-to-ambient thermal resistance in free air; defines temperature rise per watt under no heatsinking.
V_F @ I_F = 10 mA	≤ 0.9 V - Forward voltage drop; relevant for polarity-check circuits or dual-direction clamp configurations.
T_j max	150 °C - Absolute maximum junction temperature; constrains ambient operating range and power derating.

Pinout & Package

SOT23 plastic surface-mounted package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, 3-terminal layout with exposed cathode tab for thermal conduction.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode (A)	Forward-biased terminal; connects to lower-potential node in Zener regulation configuration.
2	Not Connected (n.c.)	Internally unconnected; must remain floating-no routing or soldering required.
3	Cathode (K)	Reverse-biased terminal; ties to regulated output node and provides primary thermal path to PCB copper.

Key Features

Feature	Design Value
±2 % Zener voltage tolerance	Enables tight regulation without post-production trimming in cost-sensitive industrial power supplies.
Hard breakdown knee	Ensures sharp, predictable turn-on behavior critical for accurate voltage clamping and reference stability.
Very low leakage (≤0.05 μA @ 17 V)	Minimizes loading error in high-impedance feedback networks of DC-DC converters and sensor interfaces.
Low differential resistance (100 Ω @ 5 mA)	Delivers <1 % output variation across ±1 mA load current shifts-ideal for precision analog references.
SOT23 footprint compatibility	Supports automated assembly and space-constrained layouts while enabling thermal coupling to PCB copper pour.

Applications

Power Supply Feedback Reference

Overvoltage Protection Clamp

Use Scenario: Stabilizing output voltage in isolated flyback or buck converter feedback loop using optocoupler-coupled TL431 replacement.

IC Role / Device Role / Timing Role: Zener diode provides fixed 22 V reference to bias optocoupler LED, setting regulation threshold.

Use Value: ±2 % tolerance and 100 Ω r_dif ensure <±0.5 % output voltage accuracy across line/load/temperature variations.

Use Scenario: Protecting microcontroller GPIO or ADC input from transient overvoltage events up to 25 V.

IC Role / Device Role / Timing Role: Shunts excess energy to ground when input exceeds 22 V, limiting peak voltage seen by downstream circuitry.

Use Value: Hard breakdown knee and 40 W non-repetitive surge rating (100 μs) enable reliable clamping without latch-up or degradation.

Low-Power Sensor Biasing

Temperature-Stable Voltage Reference

Use Scenario: Providing excitation voltage to resistive temperature sensors (RTDs) or bridge-based pressure transducers.

IC Role / Device Role / Timing Role: Acts as low-current, low-noise voltage source replacing higher-power regulators in battery-powered sensing nodes.

Use Value: ≤0.05 μA leakage avoids measurement offset errors; 250 mW rating supports 1.1 mA bias at 22 V for multi-sensor arrays.

Use Scenario: Generating stable reference for 12-bit SAR ADCs in industrial data acquisition modules.

IC Role / Device Role / Timing Role: Supplies clean 22 V reference to external voltage divider or buffer amplifier feeding ADC reference input.

Use Value: Low dynamic impedance (100 Ω) suppresses noise coupling; thermal resistance (500 K/W) enables predictable drift compensation in firmware.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C22	Same 22 V ±5 % tolerance, but higher r_dif (130 Ω) and I_R (0.1 μA @ 17 V); SOT23 package with identical pinout.	Less precise regulation and higher leakage reduce accuracy in high-impedance reference paths.	Select when ±5 % tolerance suffices and cost is prioritized over leakage or impedance performance.
MMSZ5247B	22 V ±5 %, r_dif = 35 Ω (lower), but I_R = 0.1 μA @ 17 V and P_tot = 350 mW (higher); SOD-123 package, different footprint.	Lower impedance improves regulation but larger SOD-123 footprint limits board density; higher power allows greater bias current.	Choose for improved dynamic regulation where PCB area permits and thermal design accommodates higher dissipation.

Compared with BZX84-C22 and MMSZ5247B, PZU84-C22R offers superior leakage control (0.05 μA vs. ≥0.1 μA) and tighter tolerance (±2 % vs. ±5 %), making it optimal for precision analog reference designs where node impedance exceeds 100 kΩ and long-term stability is critical.

Availability

PZU84-C22R is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface modules, and overvoltage protection circuits requiring stable component supply, consistent parametric performance, and long-lifecycle availability.

Supply support for PZU84-C22R 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-enhancing components, delivering high-volume, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.

PZU84-C22R belongs to the PZU84 series of general-purpose Zener diodes engineered for precision voltage regulation and low-leakage clamping in space-constrained, thermally sensitive applications.

FAQ

What is the guaranteed Zener voltage range for PZU84-C22R at 5 mA?

The guaranteed V_Z range is 20.88 V to 23.17 V at I_Z = 5 mA, reflecting its ±2 % tolerance specification. This range is validated per Nexperia's Product Data Sheet Rev. 4 (August 2024) and applies under T_j = 25 °C with pulse-tested conditions (t_p ≤ 300 μs, duty cycle ≤ 0.02).

Can Pin 2 (n.c.) be connected to ground or left floating in PCB layout?

Pin 2 is internally not connected and must remain electrically floating-no routing, soldering, or grounding is permitted. Connecting it risks mechanical stress on the die bond or unintended parasitic coupling; the SOT23 footprint design assumes Pin 2 is unused and isolated.

How does PZU84-C22R perform under elevated ambient temperatures?

At T_amb = 85 °C, derated power dissipation drops to ~125 mW (50 % of 250 mW) due to R_th(j-a) = 500 K/W. The Zener voltage exhibits a temperature coefficient of +17 mV/K near 22 V, resulting in ~+0.5 V shift from 25 °C to 85 °C-compensatable in closed-loop systems.

Is PZU84-C22R suitable for automotive applications?

No-PZU84-C22R is not AEC-Q200 qualified and lacks automotive-grade screening, qualification testing, or extended temperature validation beyond −55 °C to +150 °C. Nexperia explicitly states non-automotive qualification in its legal disclaimers; use requires full customer validation for safety-critical systems.

PZU84-C22R 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):: 22 V

Tolerance:: ±5%

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:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

PZU84-C22R FAQ

1.How can I place an order for PZU84-C22R through Aetrix?

Please submit a Request for Quotation (RFQ) for PZU84-C22R 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-C22R reliable?

The price and inventory of PZU84-C22R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-C22R is usually 5 days.

3.What payment methods are accepted for PZU84-C22R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-C22R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PZU84-C22R?

PZU84-C22R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PZU84-C22R 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-C22R?

For technical support, including PZU84-C22R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-C22R requirements.

6.How does Aetrix verify that PZU84-C22R is sourced from the original manufacturer or authorized distributors?

All PZU84-C22R 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-C22R meets industry standards.

7.What is the process for return or replacement of PZU84-C22R?

All PZU84-C22R units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-C22R, 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-C22R part is unused and in its original packaging.

Return procedure for PZU84-C22R:

1.Submit a request within 90 days.

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

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