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Nexperia USA Inc. PDZ24B-QZ
- Part No.:
- PDZ24B-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ24B-QZ.pdf
- Description:
- DIODE ZENER 24V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:6,074
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Product details
Overview
PDZ24B-QZ from Nexperia is a single Zener diode in SOD323 (SC-76) package, designed for precision voltage regulation at 24 V nominal working voltage with ±2 % tolerance, 120 Ω max differential resistance at IZ = 5 mA, and 0.05 μA max reverse current at VR = 19.0 V - used in automotive power rail clamping and low-power reference circuits.
For engineers reviewing the PDZ24B-QZ datasheet, PDZ24B-QZ pinout, PDZ24B-QZ application, or PDZ24B-QZ equivalent, this device supports AEC-Q101-compliant designs requiring stable 24 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 as a two-terminal voltage reference with cathode-anode polarity, optimized for reverse-bias regulation at IZ = 5 mA. Its 23.72 V to 24.78 V working voltage range (VZ) and temperature coefficient of +20.4 mV/K ensure predictable drift behavior across −65 °C to +150 °C junction temperature.
Thermal performance is defined by Rth(j-sp) = 130 K/W (junction-to-solder point) and Rth(j-a) = 340 K/W (junction-to-ambient), enabling reliable 400 mW total power dissipation on standard FR4 PCBs with single-sided copper and tin plating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (nominal) | 24 V - precise regulation target at IZ = 5 mA, supporting 24 V rail stabilization |
| VZ range | 23.72 V to 24.78 V - ±2 % tolerance ensures tight voltage control for reference applications |
| rdif (max) | 120 Ω at IZ = 5 mA - low dynamic impedance maintains regulation accuracy under load variation |
| IR (max) | 0.05 μA at VR = 19.0 V - ultra-low leakage preserves signal integrity in high-impedance bias networks |
| Ptot | 400 mW at Tamb ≤ 25 °C - sufficient headroom for transient suppression in automotive ECUs |
| Tj max | +150 °C - enables operation in under-hood environments per AEC-Q101 qualification |
| Package | SOD323 (SC-76) - 1.35 mm × 1.75 mm footprint ideal for space-constrained automotive PCB layouts |
Pinout & Package
SOD323 (SC-76) plastic surface-mounted package with 2 leads; marking bar denotes cathode terminal. Device mounted on FR4 PCB with standard reflow footprint (0.6 mm pad width, 1.5 mm pad length).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (marked side) | Cathode (K) | Connected to regulated output node; reverse-bias anode-to-cathode voltage establishes VZ |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Stress-tested for automotive reliability including temperature cycling, HTRB, and ESD per JESD22 standards |
| Hard breakdown knee | Sharp, well-defined reverse conduction onset improves regulation stability at low currents |
| Low dynamic impedance | 120 Ω max at 5 mA enables <1 % output deviation under ±10 mA load step changes |
| Ultra-low leakage | 0.05 μA max at 19 V reverse bias minimizes quiescent current in battery-powered systems |
| Small outline | SOD323 footprint (1.35 × 1.75 mm) supports high-density routing in ADAS sensor modules |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Voltage clamping on 24 V CAN transceiver supply rail during load dump events. IC Role / Device Role / Timing Role: Zener clamp protecting transceiver IC input from >35 V surges while maintaining 24 V nominal operation. Use Value: Prevents latch-up in ISO 11898-2 compliant transceivers using only 0.4 mm² board area. |
Use Scenario: Precision 24 V reference for 16-bit ADC biasing in pressure transducer front-end. IC Role / Device Role / Timing Role: Stable shunt reference establishing VREF for ratiometric measurement against bridge sensor output. Use Value: Enables <±0.1 % full-scale error over −40 °C to +125 °C due to matched thermal coefficient. |
| LED Driver Overvoltage Protection | Power Supply Feedback Divider |
|
Use Scenario: Crowbar protection for constant-current LED driver IC powered from 24 V bus. IC Role / Device Role / Timing Role: Fast-acting shunt element triggering external SCR during overvoltage fault conditions. Use Value: Responds within 100 ns to 30 V transients, limiting peak stress on driver MOSFET gate oxide. |
Use Scenario: Top resistor in feedback divider for isolated 24 V DC-DC converter output regulation. IC Role / Device Role / Timing Role: Provides stable reference node for optocoupler-based feedback loop in flyback controller. Use Value: Maintains ±0.5 % output accuracy over 10-year lifetime with <10 ppm/°C long-term drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C24 | Same 24 V nominal VZ, but ±5 % tolerance and 200 Ω rdif; not AEC-Q101 qualified | Limited to non-automotive industrial use; higher regulation error under varying load | Select when cost sensitivity outweighs automotive qualification and precision requirements |
| MMSZ5242B | 24 V VZ, ±5 % tolerance, 150 Ω rdif, SOD-123 package (larger footprint) | Requires 30 % more PCB area; suitable for legacy designs with existing SOD-123 land patterns | Choose for backward compatibility where SOD323 rework is impractical |
Compared with BZX84-C24 and MMSZ5242B, PDZ24B-QZ delivers tighter tolerance, lower dynamic impedance, and AEC-Q101 compliance in the smallest footprint - making it optimal for new automotive and high-reliability industrial designs demanding minimal board space and guaranteed performance.
Availability
PDZ24B-QZ is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, LED driver overvoltage protection, and power supply feedback divider circuits requiring stable component supply with full traceability.
Supply support for PDZ24B-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 technologies, delivering high-performance logic, discrete, and MOSFET devices for automotive, industrial, and consumer markets.
The PDZ-B-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for robust voltage regulation in harsh automotive environments with emphasis on low leakage, sharp breakdown, and thermal stability.
FAQ
What is the maximum reverse current for PDZ24B-QZ at 19.0 V?
The maximum reverse current (IR) is 0.05 μA at VR = 19.0 V and Tj = 25 °C, measured per datasheet Table 8. This ultra-low leakage ensures minimal power loss in high-impedance reference networks and extends battery life in always-on automotive subsystems.
Is PDZ24B-QZ suitable for reflow soldering?
Yes - PDZ24B-QZ is qualified for lead-free reflow soldering per JEDEC J-STD-020. The recommended footprint uses 0.6 mm wide × 1.5 mm long solder pads with 0.95 mm center-to-center spacing, matching the SOD323 outline in Figure 9 of the datasheet.
How does the temperature coefficient affect regulation accuracy?
PDZ24B-QZ has a temperature coefficient (SZ) of +20.4 mV/K at IZ = 5 mA. This means VZ increases by ~20.4 mV per °C rise in junction temperature, enabling predictable compensation in temperature-sensitive analog circuits like sensor biasing networks.
Can PDZ24B-QZ replace PDZ24B without modification?
Yes - PDZ24B-QZ is the AEC-Q101-qualified version of PDZ24B, sharing identical electrical characteristics, SOD323 package, pinout, and marking (ZQ). The "-QZ" suffix denotes automotive qualification; no layout or schematic changes are required for drop-in replacement in new designs.
PDZ24B-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):
- 24 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 19 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
PDZ24B-QZ FAQ
1.How can I place an order for PDZ24B-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ24B-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 PDZ24B-QZ reliable?
The price and inventory of PDZ24B-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ24B-QZ is usually 5 days.
3.What payment methods are accepted for PDZ24B-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ24B-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ24B-QZ?
PDZ24B-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ24B-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 PDZ24B-QZ?
For technical support, including PDZ24B-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ24B-QZ requirements.
6.How does Aetrix verify that PDZ24B-QZ is sourced from the original manufacturer or authorized distributors?
All PDZ24B-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 PDZ24B-QZ meets industry standards.
7.What is the process for return or replacement of PDZ24B-QZ?
All PDZ24B-QZ units undergo pre-shipment inspection (PSI). If there is an issue with PDZ24B-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 PDZ24B-QZ part is unused and in its original packaging.
Return procedure for PDZ24B-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ24B-QZ Tags
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