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Nexperia USA Inc. PDZ15B-QX
- Part No.:
- PDZ15B-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ15B-QX.pdf
- Description:
- DIODE ZENER 15V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:6,655
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Product details
Overview
PDZ15B-QX from Nexperia is a single Zener diode in SOD323 (SC-76) package, rated for 14.34 V to 14.98 V nominal Zener voltage at 5 mA, with ±2 % tolerance, 80 Ω max differential resistance, and 0.05 μA max reverse leakage at 11.0 V. It delivers 400 mW total power dissipation and is AEC-Q101 qualified for automotive voltage regulation.
For engineers reviewing the PDZ15B-QX datasheet, PDZ15B-QX pinout, PDZ15B-QX application, or PDZ15B-QX equivalent, this device supports precision low-power voltage reference and overvoltage clamping in space-constrained automotive ECUs, sensor signal conditioning circuits, and battery management subsystems where stable Zener knee behavior and low thermal resistance (130 K/W junction-to-solder point) are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with hard-knee characteristics, optimized for stable regulation at low test currents (IZ = 5 mA). Its temperature coefficient of +11.4 mV/K enables predictable drift compensation in bias networks.
The device uses planar epitaxial construction with metallization designed for reliable solder joint formation on FR4 PCBs. Thermal resistance values (Rth(j-sp) = 130 K/W, Rth(j-a) = 340 K/W) reflect its suitability for surface-mounted designs with limited copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.34 V to 14.98 V at IZ = 5 mA - defines precise regulation threshold for feedback or clamp circuits |
| Differential Resistance (rdif) | ≤ 80 Ω at IZ = 5 mA - ensures minimal output voltage variation under load current changes |
| Reverse Leakage (IR) | ≤ 0.05 μA at VR = 11.0 V - guarantees negligible standby current in high-impedance reference paths |
| Power Dissipation (Ptot) | 400 mW at Tamb ≤ 25 °C - supports continuous operation in compact automotive modules without forced cooling |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - enables use as polarity protection diode in dual-role applications |
| Thermal Resistance (Rth(j-sp)) | 130 K/W - allows direct thermal coupling to PCB copper for effective self-heating management |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
Pinout & Package
SOD323 (SC-76) plastic surface-mounted package: 2-terminal, ultra-compact footprint (1.35 mm × 0.8 mm × 0.45 mm), cathode marked by bar on 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 reverse-bias path for regulation/clamping function |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Enables sharp, repeatable turn-on at VZ for accurate voltage clamping in transient suppression |
| Low dynamic impedance | 80 Ω max at 5 mA ensures minimal regulation error across operating current range |
| Very low leakage | 0.05 μA max at 11 V preserves signal integrity in high-impedance analog monitoring circuits |
| AEC-Q101 qualification | Validated for automotive under-hood environments including −40 °C to +150 °C junction operation |
| Small SOD323 footprint | Reduces PCB real estate by >50% vs. SOD123, enabling dense layout in ADAS camera modules and radar sensors |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Regulating reference voltage for LIN bus transceiver biasing in door module ECUs. IC Role / Device Role / Timing Role: Zener diode provides stable 15 V rail for transceiver VCC, replacing larger three-terminal regulators. Use Value: Enables direct connection to 12 V battery with minimal external components while maintaining <±1% output stability over temperature. |
Use Scenario: Clamping amplifier input to prevent overvoltage damage from ESD events in pressure sensor front-end. IC Role / Device Role / Timing Role: Fast-reacting shunt element that diverts transient energy before op-amp input stage saturation. Use Value: Limits input to ≤15.5 V with <1 ns response, preserving amplifier linearity and avoiding latch-up. |
| USB-C Power Delivery Monitor | Battery Management System (BMS) Cell Balancing Reference |
|
Use Scenario: Providing stable 15 V reference for ADC measurement of VBUS in USB-C PD sink controllers. IC Role / Device Role / Timing Role: Precision voltage reference source feeding SAR ADC reference input. Use Value: Delivers 0.05 % typical voltage accuracy over −40 °C to +85 °C, eliminating need for calibration. |
Use Scenario: Setting threshold for passive cell balancing FET gate drive in 4S Li-ion packs. IC Role / Device Role / Timing Role: Zener-based voltage comparator reference for 15 V cell overvoltage detection. Use Value: Maintains ±0.3 V tolerance across life cycle, ensuring consistent balancing activation without software intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C15 | Same 15 V nominal rating but ±5 % tolerance, higher rdif (100 Ω), no AEC-Q101 qualification | Acceptable for consumer-grade power supplies; not suitable for automotive functional safety requirements | Select when cost sensitivity outweighs automotive compliance and tighter regulation needs |
| MMSZ5245B | 15 V rating with ±5 % tolerance, 100 Ω rdif, SOD-123 package (larger footprint), no AEC-Q101 | Compatible with legacy board layouts using SOD-123; lacks thermal performance (Rth(j-sp) ≈ 200 K/W) | Choose only if redesign to SOD323 is impractical and AEC-Q101 is not mandated |
Compared with BZX84-C15 and MMSZ5245B, PDZ15B-QX offers tighter voltage tolerance, lower dynamic impedance, superior thermal coupling, and full automotive qualification-making it the sole choice for new AEC-compliant designs requiring stable 15 V reference or clamping.
Availability
PDZ15B-QX is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, USB-C power delivery monitors, and battery management systems requiring stable component supply with guaranteed long-term continuity.
Supply support for PDZ15B-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 delivering high-performance logic, discrete, and MOSFET devices with focus on efficiency, reliability, and miniaturization for automotive and industrial markets.
The PDZ-B-Q series targets automotive voltage regulation and protection, engineered for AEC-Q101 compliance, low-leakage Zener behavior, and ultra-small SMD integration in space-constrained ECUs and sensors.
FAQ
What is the maximum reverse current the PDZ15B-QX can handle during transient events?
The PDZ15B-QX supports non-repetitive peak reverse current (IZSM) up to 2.0 A for 100 µs square-wave pulses at 25 °C ambient, as verified per IEC 60134 limiting values. This enables robust ESD and load-dump transient suppression without degradation when used within specified thermal limits.
Does the PDZ15B-QX require derating above 25 °C ambient temperature?
Yes - power dissipation must be linearly derated above 25 °C ambient at 3.12 mW/°C, based on its 130 K/W junction-to-solder-point thermal resistance and 400 mW rating at Tamb = 25 °C. Full derating curve is provided in Figure 1 of the Nexperia datasheet.
How is the cathode identified on the PDZ15B-QX package?
The cathode (pin 1) is marked by a visible bar printed on the top surface of the SOD323 package. This marking aligns with the standardized pinning diagram in Table 2 of the datasheet and matches the graphic symbol showing 'K' adjacent to the bar.
Can PDZ15B-QX be used in forward conduction mode?
Yes - it exhibits 0.9 V forward voltage at 10 mA, making it suitable for polarity protection or low-current rectification. However, its 200 mA continuous forward current limit and lack of optimized forward characteristics mean it should not replace purpose-built rectifiers in high-current paths.
PDZ15B-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):
- 15 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11 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
PDZ15B-QX FAQ
1.How can I place an order for PDZ15B-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ15B-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 PDZ15B-QX reliable?
The price and inventory of PDZ15B-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ15B-QX is usually 5 days.
3.What payment methods are accepted for PDZ15B-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ15B-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ15B-QX?
PDZ15B-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ15B-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 PDZ15B-QX?
For technical support, including PDZ15B-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ15B-QX requirements.
6.How does Aetrix verify that PDZ15B-QX is sourced from the original manufacturer or authorized distributors?
All PDZ15B-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 PDZ15B-QX meets industry standards.
7.What is the process for return or replacement of PDZ15B-QX?
All PDZ15B-QX units undergo pre-shipment inspection (PSI). If there is an issue with PDZ15B-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 PDZ15B-QX part is unused and in its original packaging.
Return procedure for PDZ15B-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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