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Nexperia USA Inc. PDZ22B-QX
- Part No.:
- PDZ22B-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ22B-QX.pdf
- Description:
- DIODE ZENER 22V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:8,323
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Product details
Overview
PDZ22B-QX from Nexperia is a single silicon Zener diode designed for precision voltage regulation and reference in low-power circuits, featuring a nominal Zener voltage of 22.0 V at 5 mA, ±2 % tolerance, 25 Ω maximum differential resistance at 5 mA, 0.05 μA maximum reverse current at 17 V, and AEC-Q101 qualification for automotive use.
For engineers reviewing the PDZ22B-QX datasheet, PDZ22B-QX pinout, PDZ22B-QX application, or PDZ22B-QX equivalent, this device supports stable voltage clamping in power supply feedback paths, ESD-protected sensor biasing, and automotive body control module references where compact SOD323 packaging and thermal robustness up to +150 °C junction temperature are required.
Technical Context
This Zener diode operates in reverse breakdown mode with a hard knee characteristic, enabling sharp voltage regulation at low test currents (IZ = 5 mA). Its 21.54 V to 22.47 V working voltage range and −18.4 mV/K temperature coefficient at 5 mA support predictable drift compensation in analog reference designs.
The device delivers 400 mW total power dissipation on FR4 PCB with standard footprint, derating linearly above 25 °C ambient, and exhibits 130 K/W junction-to-solder-point thermal resistance-critical for thermal management in densely populated automotive PCBs.
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 stabilization |
| Differential Resistance (rdif) | ≤ 25 Ω at IZ = 5 mA - ensures minimal output voltage variation under load transients |
| Reverse Current (IR) | ≤ 0.05 μA at VR = 17 V - guarantees ultra-low leakage in high-impedance bias networks |
| Power Dissipation (Ptot) | 400 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 |
| Thermal Resistance (Rth(j-sp)) | 130 K/W - enables accurate junction temperature estimation from solder point measurement |
| Temperature Coefficient (SZ) | −18.4 mV/K at IZ = 5 mA - quantifies voltage drift per degree for thermal error budgeting |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - determines conduction loss when used in forward-biased protection paths |
Pinout & Package
PDZ22B-QX is housed in a SOD323 (SC-76) surface-mount plastic package measuring 1.8 mm × 1.35 mm × 0.95 mm, with cathode identified by a marking 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 aligns with this terminal |
| 2 (A) | Anode | Connected to circuit ground or lower-potential reference; completes reverse-bias path for voltage regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including body electronics and infotainment power rails |
| ±2 % Zener voltage tolerance | Reduces need for post-production trimming in voltage reference circuits |
| Hard breakdown knee | Enables stable regulation even at low bias currents (down to 0.5 mA) |
| Ultra-low leakage (0.05 μA) | Maintains accuracy in high-resistance divider networks without loading error |
| SOD323 footprint compatibility | Supports automated placement and reflow soldering on space-constrained PCBs |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 22 V reference for microcontroller ADC input scaling in door module ECUs. IC Role / Device Role / Timing Role: Zener diode provides stable voltage reference for analog front-end biasing. Use Value: ±2 % tolerance and −18.4 mV/K TC ensure <±1.5 % total reference error across −40 °C to +125 °C operating range. |
Use Scenario: Clamping transient overvoltage on 24 V industrial current-loop transmitter outputs. IC Role / Device Role / Timing Role: Zener diode acts as shunt protector against induced surges on 4–20 mA loop lines. Use Value: 400 mW power rating and 130 K/W Rth(j-sp) allow safe energy absorption of 100 µs transients without thermal runaway. |
| Consumer Power Adapter Feedback | Medical Diagnostic Equipment Biasing |
Use Scenario: Setting feedback threshold in secondary-side TL431-based flyback converter for 22 V output. IC Role / Device Role / Timing Role: Zener diode supplies precise reference to optocoupler LED drive circuit. Use Value: 25 Ω rdif minimizes output voltage ripple caused by optocoupler current variations. |
Use Scenario: Providing low-noise bias voltage for photodiode amplifier stages in portable ultrasound probes. IC Role / Device Role / Timing Role: Zener diode establishes clean 22 V supply rail for op-amp biasing. Use Value: 0.05 μA reverse leakage prevents signal degradation in picoamp-level transimpedance amplifiers. |
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 | Same 22 V nominal Zener, but ±5 % tolerance and higher 60 Ω rdif; not AEC-Q101 qualified | Limited to commercial-grade power supplies; unsuitable for automotive environments | Select when cost sensitivity outweighs precision and qualification requirements |
| MMSZ5247B | 22 V nominal, ±5 % tolerance, 35 Ω rdif, 100 mW Ptot, SOD-123 package | Lower power handling and larger footprint; lacks automotive qualification | Choose only for non-automotive, low-power applications where board space permits larger package |
Compared with BZX84-C22 and MMSZ5247B, PDZ22B-QX offers tighter voltage tolerance, lower dynamic impedance, higher power capability, and full AEC-Q101 compliance-making it the sole option for automotive-grade 22 V reference and clamping where reliability and precision are mandatory.
Availability
PDZ22B-QX is available at Aetrix Electronics and suitable for automotive body control modules, industrial current-loop transmitters, consumer power adapter feedback circuits, and medical diagnostic equipment requiring stable component supply with guaranteed long-term availability.
Supply support for PDZ22B-QX 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 specializing in high-performance, reliable discrete, logic, and MOSFET devices, with manufacturing rooted in process technology leadership and automotive-grade quality systems.
PDZ22B-QX belongs to the PDZ-B-Q series of AEC-Q101-qualified Zener diodes engineered specifically for voltage regulation and reference in harsh-environment automotive and industrial electronics.
FAQ
What is the maximum reverse voltage before breakdown for PDZ22B-QX?
The PDZ22B-QX has a specified working voltage range of 21.54 V to 22.47 V at 5 mA test current. Breakdown begins within this band; operation above 22.47 V is not guaranteed and may exceed limiting values. The absolute maximum reverse voltage is defined by the 17 V reverse test condition in the leakage specification-not a breakdown threshold.
Can PDZ22B-QX be used in parallel for higher power dissipation?
No-Zener diodes exhibit negative temperature coefficients and mismatched characteristics that cause current hogging when paralleled. This leads to thermal instability and premature failure. For higher power, use a single higher-rated device or implement active regulation instead.
Is the SOD323 package compatible with standard reflow profiles?
Yes-Nexperia specifies compatibility with IPC/JEDEC J-STD-020D reflow profiles. The recommended footprint (Figure 9) uses 0.6 mm × 0.5 mm solder pads with 0.5 mm pitch; peak temperature must not exceed 260 °C for ≤ 30 seconds to avoid package damage or delamination.
How does the −18.4 mV/K temperature coefficient affect circuit accuracy?
This coefficient means the Zener voltage decreases by 18.4 mV per Kelvin rise in junction temperature. Over a 100 °C rise (e.g., −40 °C to +60 °C ambient), voltage drops ~1.84 V-requiring system-level compensation or selection of adjacent voltage grades (e.g., PDZ24B-QX) to offset drift in critical references.
PDZ22B-QX 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-QX FAQ
1.How can I place an order for PDZ22B-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ22B-QX 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-QX reliable?
The price and inventory of PDZ22B-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ22B-QX is usually 5 days.
3.What payment methods are accepted for PDZ22B-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ22B-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ22B-QX?
PDZ22B-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ22B-QX 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-QX?
For technical support, including PDZ22B-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ22B-QX requirements.
6.How does Aetrix verify that PDZ22B-QX is sourced from the original manufacturer or authorized distributors?
All PDZ22B-QX 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-QX meets industry standards.
7.What is the process for return or replacement of PDZ22B-QX?
All PDZ22B-QX units undergo pre-shipment inspection (PSI). If there is an issue with PDZ22B-QX, 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-QX part is unused and in its original packaging.
Return procedure for PDZ22B-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ22B-QX Tags
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