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Nexperia USA Inc. PZU84-B22R
- Part No.:
- PZU84-B22R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-B22R.pdf
- Description:
- DIODE ZENER 22V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,741
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Product details
Overview
PZU84-B22R from Nexperia is a general-purpose Zener voltage regulator diode in SOT23 package, providing precise 22 V nominal regulation at 5 mA with ±2 % tolerance, low differential resistance (100 Ω at IZ = 5 mA), and hard breakdown knee for stable reference applications in power supply feedback loops and voltage clamping circuits.
For engineers reviewing the PZU84-B22R datasheet, PZU84-B22R pinout, PZU84-B22R application, or PZU84-B22R equivalent, this page delivers verified Zener parameters including VZ = 22 V, rdif = 100 Ω, IR ≤ 0.05 μA at VR = 17 V, Tj max = 150 °C, and thermal resistance Rth(j-a) = 500 K/W - all critical for low-power voltage reference and overvoltage protection design.
Technical Context
The PZU84-B22R belongs to the B-tolerance series (±2 %), optimized for low-leakage, sharp-knee Zener operation with typical reverse current ≤ 0.05 μA at 17 V and differential resistance of 100 Ω at 5 mA. Its junction temperature range spans −55 °C to +150 °C, supporting industrial ambient conditions.
Designed for surface-mount use on FR4 PCBs with standard SOT23 footprint, it delivers 250 mW total power dissipation under defined thermal conditions and withstands non-repetitive peak reverse power up to 40 W for 100 μs pulses - enabling robust transient suppression in compact power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (nominal) | 22 V at IZ = 5 mA - precise regulation point for feedback and reference circuits |
| Tolerance | ±2 % - tight voltage accuracy suitable for precision biasing and sensing |
| rdif | 100 Ω max at IZ = 5 mA - low dynamic impedance ensures stable output under load variation |
| IR | ≤ 0.05 μA at VR = 17 V - ultra-low leakage preserves efficiency in high-impedance nodes |
| Ptot | 250 mW - sufficient for low-power regulation without heatsinking on standard FR4 |
| Tj max | 150 °C - enables reliable operation in industrial and automotive-adjacent environments |
| Rth(j-a) | 500 K/W - defines thermal rise under continuous DC bias; requires layout-aware copper area |
Pinout & Package
Package: SOT23 plastic surface-mounted package; 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body; anode (Pin 1), not connected (Pin 2), cathode (Pin 3).
| 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.) | Internal die pad with no electrical connection - must remain unconnected in PCB layout |
| 3 | Cathode (K) | Reverse-bias terminal; connects to regulated voltage rail and provides reference output |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables direct replacement in precision feedback paths without recalibration |
| Hard breakdown knee | Ensures monotonic, predictable conduction onset - critical for clean clamping and reference stability |
| Ultra-low leakage (≤0.05 μA) | Minimizes error current in high-impedance voltage dividers and sensor bias networks |
| SOT23 footprint compatibility | Supports automated assembly and space-constrained designs without requiring custom land patterns |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
|
Use Scenario: Regulating output voltage in isolated flyback or buck converter feedback loop using optocoupler-coupled TL431 alternative. IC Role / Device Role / Timing Role: Zener diode provides stable 22 V reference to drive optocoupler LED, closing control loop with minimal drift. Use Value: Tight ±2 % tolerance and low rdif maintain regulation accuracy across line/load transients without external trimming. |
Use Scenario: Protecting microcontroller I/O pins from ESD-induced voltage spikes on 24 V industrial bus lines. IC Role / Device Role / Timing Role: Acts as shunt clamp between signal line and ground, conducting only above 22 V threshold. Use Value: Hard breakdown knee and 40 W surge capability absorb fast transients while limiting clamping voltage to ≤23.5 V. |
| Low-Power Sensor Biasing | Reference Voltage Generator |
|
Use Scenario: Providing stable bias voltage to analog front-end of current-sense amplifier in battery-powered IoT node. IC Role / Device Role / Timing Role: Supplies fixed 22 V reference to op-amp gain-setting network in high-side current measurement circuit. Use Value: Ultra-low leakage (≤0.05 μA) prevents loading of high-impedance divider, preserving measurement accuracy. |
Use Scenario: Generating accurate 22 V reference for ADC input scaling in programmable logic controller (PLC) analog module. IC Role / Device Role / Timing Role: Functions as primary voltage reference source feeding resistive divider to produce scaled reference for 16-bit SAR ADC. Use Value: Low temperature coefficient (≈+17 mV/K at 22 V) and stable rdif ensure <±0.5 % drift over −40 °C to +85 °C operating range. |
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 | ±5 % tolerance, higher rdif (130 Ω), higher IR (≤0.1 μA at 17 V) | Acceptable where cost sensitivity outweighs precision; less suitable for high-accuracy feedback | Select when budget constraints dominate and ±5 % regulation error is acceptable |
| MMSZ5247B | ±5 % tolerance, SOD-123 package, rdif = 31 Ω at 20 mA (higher test current), IR = 0.1 μA at 17 V | Higher power handling (500 mW), but larger footprint and looser tolerance reduce fit in space-constrained precision roles | Prefer for higher-current clamping where SOD-123 layout is viable and tighter tolerance is not required |
Compared with BZX84-C22 and MMSZ5247B, PZU84-B22R offers superior voltage accuracy (±2 % vs ±5 %), lower leakage, and SOT23 compatibility - making it optimal for miniaturized, precision-regulated systems where reference stability and board space are critical.
Availability
PZU84-B22R is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface modules, and embedded voltage reference circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for PZU84-B22R 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, with leadership in advanced packaging and automotive-qualified components.
The PZU84 series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for stable voltage regulation and clamping in space-constrained, cost-sensitive industrial and consumer power management applications.
FAQ
What is the exact Zener voltage and test condition for PZU84-B22R?
The nominal Zener voltage is 22 V, measured at IZ = 5 mA with Tj = 25 °C. The guaranteed range is 20.88 V to 23.17 V (±2 %), per Table 8 in the datasheet. This value is confirmed by characterization data and applies under steady-state DC conditions with proper thermal management.
Does Pin 2 have any internal connection or function?
No - Pin 2 is explicitly marked "n.c." (not connected) in the official pinning diagram and device outline. It is an unconnected lead frame tab with no electrical bond to the silicon die. PCB layout must leave this terminal floating; soldering or routing to it may cause mechanical stress or unintended parasitics.
Can PZU84-B22R be used in place of a 24 V Zener diode?
No - PZU84-B22R is specified for 22 V nominal regulation, not 24 V. Substituting it for a 24 V part introduces a systematic −8.3 % error in reference or clamp voltage. For 24 V, the correct variant is PZU84-B24 (22.93–25.57 V, ±2 %), which is a distinct orderable type with validated characteristics.
What is the maximum allowable forward current for PZU84-B22R?
The absolute maximum forward current is 200 mA, per Table 5 (Limiting Values). However, forward conduction is not its intended operating mode; the device is designed for reverse-bias Zener regulation. Continuous forward current above 10 mA risks exceeding Ptot = 250 mW unless thermally managed, and degrades long-term reliability.
PZU84-B22R 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:
- ±2%
- 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-B22R FAQ
1.How can I place an order for PZU84-B22R through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-B22R 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-B22R reliable?
The price and inventory of PZU84-B22R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-B22R is usually 5 days.
3.What payment methods are accepted for PZU84-B22R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-B22R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-B22R?
PZU84-B22R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-B22R 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-B22R?
For technical support, including PZU84-B22R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-B22R requirements.
6.How does Aetrix verify that PZU84-B22R is sourced from the original manufacturer or authorized distributors?
All PZU84-B22R 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-B22R meets industry standards.
7.What is the process for return or replacement of PZU84-B22R?
All PZU84-B22R units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-B22R, 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-B22R part is unused and in its original packaging.
Return procedure for PZU84-B22R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-B22R Tags
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