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Nexperia USA Inc. PDZ15B-QZ
- Part No.:
- PDZ15B-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ15B-QZ.pdf
- Description:
- DIODE ZENER 15V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,821
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Product details
Overview
PDZ15B-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 14.66 V (min 14.34 V, max 14.98 V) at IZ = 5 mA, ±2 % tolerance, 80 Ω typical differential resistance, and qualified to AEC-Q101.
For engineers reviewing the PDZ15B-QZ datasheet, PDZ15B-QZ pinout, PDZ15B-QZ application, or PDZ15B-QZ equivalent, this device serves as a surface-mount voltage reference in power supply feedback loops, overvoltage clamping, and ESD-protected bias networks where stable 15 V regulation and low leakage (<0.05 µA at VR = 11 V) are required.
Technical Context
This Zener diode operates in reverse breakdown mode with hard knee characteristics and low dynamic impedance-critical for maintaining regulation accuracy under varying load currents. Its thermal resistance Rth(j-a) is 340 K/W on FR4 PCB, enabling reliable operation up to Tj = +150 °C.
The device exhibits a positive temperature coefficient of +11.4 mV/K at IZ = 5 mA, supporting stable reference behavior across temperature in automotive ambient ranges. Reverse capacitance is 99 pF at f = 1 MHz and VR = 0 V, suitable for moderate-speed clamping without excessive signal distortion.
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 point for 15 V rail stabilization |
| Differential Resistance rdif | 80 Ω typical - ensures minimal output voltage shift under load current variation |
| Reverse Leakage IR | <0.05 µA at VR = 11 V - enables ultra-low standby power in battery-backed systems |
| Power Dissipation Ptot | 400 mW at Tamb ≤ 25 °C - supports continuous operation in compact SMD layouts with standard FR4 thermal relief |
| Forward Voltage VF | 0.9 V at IF = 10 mA - allows predictable forward conduction during transient polarity reversal |
| Temperature Coefficient SZ | +11.4 mV/K at IZ = 5 mA - provides predictable, linear VZ drift for compensated reference designs |
| Package | SOD323 (SC-76) - 1.35 mm × 0.85 mm footprint ideal for space-constrained automotive ECUs and sensor modules |
Pinout & Package
PDZ15B-QZ is housed in a 2-pin SOD323 plastic surface-mount package. The cathode is marked by a bar on the device body; anode and cathode terminals are arranged linearly with 0.9 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (bar-marked side) | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (opposite end) | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including engine control units and ADAS sensors |
| Hard breakdown knee | Sharp, well-defined Zener transition enables accurate threshold detection in protection circuits |
| Low leakage current | <0.05 µA at 11 V reverse bias minimizes quiescent drain in always-on monitoring circuits |
| ±2 % voltage tolerance | Reduces need for post-production trimming in factory-calibrated voltage references |
| 130 K/W junction-to-solder-point thermal resistance | Enables direct thermal coupling to copper pour for improved power handling in high-reliability PCBs |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage reference for microcontroller ADC input scaling in door module power management. IC Role / Device Role / Timing Role: Zener diode providing stable 15 V reference to op-amp buffer driving 12-bit SAR ADC. Use Value: Maintains <±0.5 LSB error across −40 °C to +125 °C due to tight VZ tolerance and predictable SZ. |
Use Scenario: Overvoltage clamp protecting analog front-end of 4–20 mA current loop transmitter. IC Role / Device Role / Timing Role: Shunt regulator limiting input to 15 V before precision instrumentation amplifier. Use Value: Limits transients to <15.5 V with <80 Ω dynamic impedance, preventing amplifier saturation during ESD events. |
| Automotive Infotainment Power Sequencing | Medical Grade Portable Monitor Bias Supply |
Use Scenario: Standby voltage supervisor enabling controlled wake-up of display controller ICs. IC Role / Device Role / Timing Role: Zener-based reset threshold detector monitoring 12 V system rail. Use Value: Triggers reset at 14.34 V with <0.05 µA leakage, ensuring no false wake-ups during low-battery sleep states. |
Use Scenario: Low-noise bias source for photodiode transimpedance amplifier in pulse oximeter. IC Role / Device Role / Timing Role: Precision shunt reference stabilizing virtual ground in dual-supply op-amp stage. Use Value: Delivers <10 µVpp noise and <0.1 % long-term drift, meeting IEC 60601-1 stability requirements. |
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-C15 | Same 15 V nominal VZ, but ±5 % tolerance and higher rdif (150 Ω typ); not AEC-Q101 qualified | Limited to non-automotive consumer electronics; unsuitable for safety-critical automotive functions | Select only for cost-sensitive, non-automotive designs where ±5 % regulation is acceptable |
| MMSZ5245B | 15 V nominal VZ, ±5 % tolerance, 100 Ω rdif, 500 mW Ptot, SOD-123 package (larger footprint) | Higher power handling but larger board area; lacks automotive qualification and low-leakage performance | Prefer when >400 mW dissipation is needed and AEC-Q101 compliance is not required |
Compared with BZX84-C15 and MMSZ5245B, PDZ15B-QZ delivers tighter voltage tolerance, lower leakage, and automotive qualification in a smaller SOD323 package-making it optimal for space-constrained, safety-compliant 15 V reference designs.
Availability
PDZ15B-QZ is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, and medical portable monitor bias supplies requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for PDZ15B-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 specializing in high-performance, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
PDZ15B-QZ belongs to the PDZ-B-Q series of AEC-Q101-qualified Zener diodes engineered specifically for robust voltage regulation in automotive power management, sensor interfaces, and safety-critical subsystems.
FAQ
What is the maximum reverse voltage PDZ15B-QZ can withstand before breakdown?
The PDZ15B-QZ has a specified Zener voltage range of 14.34 V to 14.98 V at IZ = 5 mA, with a hard breakdown knee. It is not rated for sustained operation above its nominal VZ; applying >15.5 V continuously risks thermal runaway unless current is strictly limited to ≤400 mW total dissipation.
How does the +11.4 mV/K temperature coefficient affect circuit design?
The positive temperature coefficient means VZ increases ~11.4 mV per °C rise in junction temperature. In precision references, this requires compensation-e.g., pairing with a negative-TC component-or operating within a narrow ambient range (−40 °C to +85 °C) to limit drift to <±0.3 V.
Can PDZ15B-QZ be used in place of PDZ15B?
Yes-PDZ15B-QZ is the automotive-grade variant of PDZ15B, sharing identical electrical specifications but adding AEC-Q101 qualification, enhanced process controls, and extended temperature validation. The "QZ" suffix denotes automotive qualification; no layout or schematic changes are needed for drop-in replacement.
What is the recommended soldering profile for SOD323 packaging?
Nexperia specifies reflow soldering per J-STD-020: peak temperature ≤260 °C, time above 217 °C ≤60 seconds, ramp rate ≤3 °C/s. The SOD323 footprint uses 0.6 mm × 0.5 mm solder pads with 0.9 mm center-to-center pitch; wave soldering requires 2.75 mm transport direction clearance per Figure 10.
PDZ15B-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):
- 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-QZ FAQ
1.How can I place an order for PDZ15B-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ15B-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 PDZ15B-QZ reliable?
The price and inventory of PDZ15B-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ15B-QZ is usually 5 days.
3.What payment methods are accepted for PDZ15B-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ15B-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ15B-QZ?
PDZ15B-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ15B-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 PDZ15B-QZ?
For technical support, including PDZ15B-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ15B-QZ requirements.
6.How does Aetrix verify that PDZ15B-QZ is sourced from the original manufacturer or authorized distributors?
All PDZ15B-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 PDZ15B-QZ meets industry standards.
7.What is the process for return or replacement of PDZ15B-QZ?
All PDZ15B-QZ units undergo pre-shipment inspection (PSI). If there is an issue with PDZ15B-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 PDZ15B-QZ part is unused and in its original packaging.
Return procedure for PDZ15B-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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