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Nexperia USA Inc. PDZ22B-QZ
- Part No.:
- PDZ22B-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ22B-QZ.pdf
- Description:
- DIODE ZENER 22V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:6,293
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Product details
Overview
PDZ22B-QZ from Nexperia is a single Zener diode designed for precision voltage regulation in low-power automotive and industrial circuits, with a nominal Zener voltage of 22.0 V (min 21.54 V, max 22.47 V at IZ = 5 mA), ±2 % tolerance, 100 Ω maximum differential resistance at 5 mA, and 0.05 μA reverse leakage at VR = 17.0 V - deployed in ECU power rail clamping and sensor reference stabilization.
For engineers reviewing the PDZ22B-QZ datasheet, PDZ22B-QZ pinout, PDZ22B-QZ application, or PDZ22B-QZ equivalent, key selection criteria include Zener voltage accuracy at low test current (5 mA), thermal coefficient (18.4 mV/K), junction-to-ambient thermal resistance (340 K/W on FR4), and AEC-Q101 qualification for under-hood reliability.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable voltage across load variations, with hard-knee breakdown behavior confirmed for PDZ5.1B-Q through PDZ10B-Q variants - though PDZ22B-QZ exhibits slightly higher dynamic impedance (100 Ω) and lower leakage (0.05 μA) than lower-voltage members, reflecting optimized doping for mid-range Zener voltages.
Its SOD323 (SC-76) package enables surface-mount integration into space-constrained PCBs, while thermal performance is defined relative to standard FR4 board mounting: Ptot derates linearly above 25 °C ambient, reaching zero dissipation at ~150 °C per the published curve, and junction temperature is limited to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 21.54 V to 22.47 V at IZ = 5 mA - ensures tight regulation window for 22 V reference rails |
| Differential Resistance rdif | ≤100 Ω at IZ = 5 mA - limits output voltage shift under load current changes |
| Reverse Leakage IR | ≤0.05 μA at VR = 17.0 V - minimizes standby power loss in battery-backed circuits |
| Power Dissipation Ptot | 400 mW at Tamb ≤ 25 °C on FR4 - defines maximum continuous clamping energy before thermal shutdown |
| Temperature Coefficient SZ | +18.4 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius rise in junction temperature |
| Forward Voltage VF | 0.9 V at IF = 10 mA - determines forward conduction loss during polarity-reversal protection use |
| Junction-to-Ambient Rth(j-a) | 340 K/W on standard FR4 - sets thermal rise per watt, critical for layout-dependent reliability |
Pinout & Package
PDZ22B-QZ is housed in a SOD323 (SC-76) plastic surface-mount package: 2-terminal, cathode-marked with a bar, 1.35 mm × 0.8 mm footprint, 0.45 mm height, optimized for reflow soldering per IPC-7095 guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (marked side) | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path for controlled conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood operation up to 150 °C junction temperature |
| ±2 % Zener voltage tolerance | Enables precise voltage references without post-production trimming in sensor signal chains |
| Hard breakdown knee | Ensures sharp transition into regulation, minimizing ambiguity in threshold detection circuits |
| Low leakage (0.05 μA @ 17 V) | Preserves battery life in always-on vehicle modules such as CAN wake-up receivers |
| SOD323 package compatibility | Supports automated placement and reflow at industry-standard 0.65 mm pitch land patterns |
Applications
| Automotive ECU Power Rail Clamping | Industrial Sensor Reference Stabilization |
|---|---|
|
Use Scenario: Protecting microcontroller supply rails from transient overvoltage events in engine control units. IC Role / Device Role / Timing Role: Zener clamp limiting input voltage to 22 V during load-dump surges. Use Value: Prevents MCU brown-out or latch-up by holding rail within 22.47 V max during 100 µs surges up to 1.3 A peak. |
Use Scenario: Providing stable 22 V reference for analog front-end gain calibration in pressure transducers. IC Role / Device Role / Timing Role: Precision shunt reference establishing known bias point for op-amp feedback networks. Use Value: Enables <±0.5% full-scale accuracy over −40 °C to +125 °C due to predictable +18.4 mV/K coefficient and low rdif. |
| USB-C Port Overvoltage Protection | Smart Meter Battery Backup Regulation |
|
Use Scenario: Safeguarding USB-C PD controller ICs against accidental 24 V adapter misconnection. IC Role / Device Role / Timing Role: Fast-acting crowbar element triggered when VIN exceeds 22.5 V. Use Value: Limits fault energy to <400 mW with <100 ns response, avoiding thermal runaway before eFuse activation. |
Use Scenario: Maintaining RTC and memory retention voltage during main power failure in utility meters. IC Role / Device Role / Timing Role: Low-leakage shunt regulator sustaining 22 V on supercapacitor backup rail. Use Value: Draws only 0.05 μA at 17 V, extending 1 F supercapacitor hold-up time by >12 hours versus higher-leakage alternatives. |
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 and 250 Ω rdif at 5 mA; not AEC-Q101 qualified | Limited to non-automotive consumer electronics due to wider voltage spread and unqualified reliability | Select when cost sensitivity outweighs precision and automotive compliance requirements |
| MMSZ5247B | 22 V nominal, ±5 % tolerance, 100 Ω rdif, but rated only to 350 mW and lacks AEC-Q101 validation | Suitable for commercial-grade power supplies but unsuitable for extended-temperature automotive deployment | Prefer for high-volume industrial boards where thermal margin allows 350 mW derating |
Compared with BZX84-C22 and MMSZ5247B, PDZ22B-QZ delivers tighter voltage control (±2 % vs ±5 %), automotive-grade reliability (AEC-Q101), and identical dynamic impedance - making it the sole choice for safety-critical 22 V reference nodes requiring long-term stability under thermal stress.
Availability
PDZ22B-QZ is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor module production, and smart meter manufacturing requiring stable component supply with guaranteed long-term continuity.
Supply support for PDZ22B-QZ 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-performance, reliable, and scalable devices for automotive, industrial, and consumer markets.
PDZ22B-QZ belongs to the PDZ-B-Q series of AEC-Q101-qualified Zener diodes engineered specifically for robust voltage regulation in harsh-environment automotive electronics and high-reliability industrial systems.
FAQ
What is the maximum reverse current IZSM rating for PDZ22B-QZ?
The non-repetitive peak reverse current is 1.3 A at tp = 100 µs, square wave, with Tamb = 25 °C prior to surge. This value is derived from Table 8 in the datasheet and reflects short-duration surge capability during load dump or ESD events - not continuous operation.
Does PDZ22B-QZ support wave soldering?
Yes - Nexperia provides dedicated wave soldering footprint dimensions (Fig. 10) specifying 1.2 mm × 2.75 mm solder lands with 0.6 mm spacing. The SOD323 body is rated for peak temperatures up to 260 °C for ≤10 seconds, meeting IPC-J-STD-020 moisture sensitivity level 1.
How does the temperature coefficient affect regulation accuracy over temperature?
With SZ = +18.4 mV/K at IZ = 5 mA, VZ increases by ~1.84 V across a 100 °C junction range (25 °C to 125 °C). For applications requiring <1 % total error, this drift must be compensated via circuit design or selected alongside complementary tempcos in feedback networks.
Is the marking code 'ZP' unique to PDZ22B-QZ?
Yes - per Table 4, 'ZP' is the exclusive marking code for PDZ22B-QZ across the PDZ-B-Q series. No other variant uses this identifier, enabling unambiguous visual identification on assembled PCBs and simplifying automated optical inspection (AOI) programming.
PDZ22B-QZ 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-QZ FAQ
1.How can I place an order for PDZ22B-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ22B-QZ 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-QZ reliable?
The price and inventory of PDZ22B-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ22B-QZ is usually 5 days.
3.What payment methods are accepted for PDZ22B-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ22B-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ22B-QZ?
PDZ22B-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ22B-QZ 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-QZ?
For technical support, including PDZ22B-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ22B-QZ requirements.
6.How does Aetrix verify that PDZ22B-QZ is sourced from the original manufacturer or authorized distributors?
All PDZ22B-QZ 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-QZ meets industry standards.
7.What is the process for return or replacement of PDZ22B-QZ?
All PDZ22B-QZ units undergo pre-shipment inspection (PSI). If there is an issue with PDZ22B-QZ, 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-QZ part is unused and in its original packaging.
Return procedure for PDZ22B-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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