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Nexperia USA Inc. PDZ22B-QF
- Part No.:
- PDZ22B-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ22B-QF.pdf
- Description:
- DIODE ZENER 22V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,231
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Product details
Overview
PDZ22B-QF from Nexperia is a single Zener diode in SOD323 (SC-76) package, designed for precision voltage regulation at 22 V nominal working voltage with ±2 % tolerance, 100 Ω max differential resistance at IZ = 5 mA, and 0.05 μA max reverse current at VR = 17 V - used in automotive power rail clamping and low-power reference circuits.
For engineers reviewing the PDZ22B-QF datasheet, PDZ22B-QF pinout, PDZ22B-QF application, or PDZ22B-QF equivalent, this device supports AEC-Q101-compliant designs requiring stable 22 V Zener regulation, low leakage, hard breakdown knee, and surface-mount compatibility on FR4 PCBs with standard reflow footprints.
Technical Context
This Zener diode operates with a nominal Zener voltage of 21.54 V to 22.47 V at IZ = 5 mA, exhibiting a temperature coefficient of +18.4 mV/K and diode capacitance of 84 pF at f = 1 MHz and VR = 0 V. Its thermal resistance from junction to ambient is 340 K/W on standard FR4 PCB.
It delivers 400 mW total power dissipation at Tamb ≤ 25 °C, derating linearly above that temperature, and supports non-repetitive peak reverse current up to 1.3 A with tp = 100 μs - enabling transient overvoltage suppression in 12 V/24 V automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 21.54 V to 22.47 V at IZ = 5 mA - defines precise clamping threshold for 22 V rail protection |
| Differential Resistance rdif | 100 Ω max at IZ = 5 mA - ensures stable regulation under small-signal load variations |
| Reverse Current IR | 0.05 μA max at VR = 17 V - enables ultra-low standby power in always-on circuits |
| Forward Voltage VF | 0.9 V max at IF = 10 mA - supports bidirectional ESD protection when paired with series resistor |
| Power Dissipation Ptot | 400 mW at Tamb = 25 °C on FR4 PCB - sets thermal design margin for compact SMD layouts |
| Thermal Resistance Rth(j-a) | 340 K/W - determines junction temperature rise under continuous Zener bias conditions |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
PDZ22B-QF uses the SOD323 (SC-76) plastic surface-mount package: 2-terminal, 1.35 mm × 0.8 mm body, 0.45 mm pitch, cathode marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; reverse-biased during Zener operation; marking bar identifies this terminal |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes Zener conduction path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Enables sharp, predictable turn-on at VZ without soft rollover - critical for accurate voltage clamping |
| Low dynamic impedance | 100 Ω max at 5 mA - maintains regulation stability across varying load currents in feedback paths |
| Ultra-low leakage | 0.05 μA max at 17 V - minimizes quiescent current in battery-backed or energy-harvesting systems |
| AEC-Q101 qualification | Validated for automotive underhood environments including 1000-cycle temperature cycling and 1000 h HTRB |
| SOD323 footprint | Compatible with standard reflow soldering per IPC-7095; 0.6 mm pad width supports high-yield assembly |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Clamping 24 V supply rail transients in door module microcontroller power domain. IC Role / Device Role / Timing Role: Zener shunt regulator providing overvoltage protection for LDO input stage. Use Value: Limits voltage excursions to ≤23 V during load dump, preventing LDO damage while drawing <0.1 μA in steady state. |
Use Scenario: Stabilizing reference voltage for 16-bit ADC in temperature transmitter. IC Role / Device Role / Timing Role: Precision Zener source establishing 22 V reference for DAC-driven calibration circuit. Use Value: Delivers ±0.45 V regulation window (±2 %) and <100 ppm/°C drift via +18.4 mV/K TC compensation. |
| USB-C Power Delivery Adapter Feedback | Smart Meter Voltage Monitoring |
|
Use Scenario: Providing secondary-side voltage sense reference in isolated flyback auxiliary supply. IC Role / Device Role / Timing Role: Zener-based feedback node for optocoupler-coupled regulation loop. Use Value: Maintains 22 V reference with <100 Ω impedance, ensuring <0.5 % output voltage error across 0–85 °C ambient range. |
Use Scenario: Monitoring phase-to-neutral voltage in 3-phase smart meter front-end. IC Role / Device Role / Timing Role: Overvoltage detector triggering MCU interrupt when line exceeds 22 V threshold. Use Value: Activates at 21.54 V with hard knee, eliminating false triggers from noise; consumes zero static power until event. |
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 nominal, but ±5 % tolerance, 625 mW Ptot, SOT23 package, no AEC-Q101 qualification | Acceptable for industrial non-automotive use; higher leakage (1 μA @ 17 V) and softer knee | Select when cost sensitivity outweighs automotive compliance and tight regulation needs |
| MMSZ5247B | 22 V nominal, ±5 %, 500 mW, SOD123 package, no AEC-Q101, 150 Ω rdif at 20 mA | Larger footprint; higher thermal resistance (400 K/W); unsuitable for space-constrained automotive modules | Prefer only if existing SOD123 layout prohibits SOD323 adoption |
Compared with BZX84-C22 and MMSZ5247B, PDZ22B-QF offers tighter tolerance, lower leakage, AEC-Q101 validation, and superior dynamic impedance - making it the sole choice for automotive 22 V rail protection where reliability and precision are non-negotiable.
Availability
PDZ22B-QF is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, USB-C power adapter feedback loops, and smart meter voltage monitoring requiring stable component supply and AEC-Q101 assurance.
Supply support for PDZ22B-QF 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 leading global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and automotive-grade robustness.
PDZ22B-QF belongs to the PDZ-B-Q series - engineered specifically for AEC-Q101-compliant voltage regulation in space-constrained automotive and industrial applications demanding low leakage, hard breakdown, and stable Zener characteristics.
FAQ
What is the maximum continuous Zener current for PDZ22B-QF at 85 °C ambient?
At Tamb = 85 °C, the derated power dissipation is 240 mW (per Fig. 1 derating curve), so maximum continuous Zener current is 240 mW ÷ 22 V ≈ 10.9 mA. This assumes FR4 PCB mounting with standard footprint and no forced airflow.
Does PDZ22B-QF support bidirectional ESD protection?
No - PDZ22B-QF is a unidirectional Zener diode optimized for reverse-bias regulation. For bidirectional ESD protection, a TVS diode such as PESD5V0S1BA should be used instead; forward conduction is limited to 0.9 V at 10 mA and not rated for surge handling.
How does the +18.4 mV/K temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
Over that range, ΔT = 165 K, so total VZ shift is +18.4 mV/K × 165 K ≈ +3.04 V - resulting in VZ spanning ~21.5 V to ~24.5 V. System-level compensation (e.g., using TC-matched resistors) is required for sub-1 % accuracy across full automotive temperature range.
Can PDZ22B-QF replace PDZ22B in legacy designs?
Yes - PDZ22B-QF is the AEC-Q101-qualified variant of PDZ22B, sharing identical electrical specs, SOD323 package, and marking code "ZP". The "QF" suffix denotes automotive qualification; no layout or schematic changes are needed for drop-in replacement in new designs targeting automotive compliance.
PDZ22B-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PDZ-B-Q
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 17 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PDZ22B-QF FAQ
1.How can I place an order for PDZ22B-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ22B-QF 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 PDZ22B-QF reliable?
The price and inventory of PDZ22B-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ22B-QF is usually 5 days.
3.What payment methods are accepted for PDZ22B-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ22B-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ22B-QF?
PDZ22B-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ22B-QF 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 PDZ22B-QF?
For technical support, including PDZ22B-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ22B-QF requirements.
6.How does Aetrix verify that PDZ22B-QF is sourced from the original manufacturer or authorized distributors?
All PDZ22B-QF 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 PDZ22B-QF meets industry standards.
7.What is the process for return or replacement of PDZ22B-QF?
All PDZ22B-QF units undergo pre-shipment inspection (PSI). If there is an issue with PDZ22B-QF, 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 PDZ22B-QF part is unused and in its original packaging.
Return procedure for PDZ22B-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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