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Nexperia USA Inc. PDZ36B-QZ
- Part No.:
- PDZ36B-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ36B-QZ.pdf
- Description:
- DIODE ZENER 36V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,863
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Product details
Overview
PDZ36B-QZ from Nexperia is a single silicon Zener diode designed for precision voltage regulation in low-power automotive and industrial circuits, with a nominal Zener voltage of 36 V (min 35.07 V, max 36.87 V at IZ = 5 mA), ±2 % tolerance, 60 Ω maximum differential resistance at 5 mA, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the PDZ36B-QZ datasheet, PDZ36B-QZ pinout, PDZ36B-QZ application, or PDZ36B-QZ equivalent, this device serves as a surface-mount voltage reference in power supply feedback loops, overvoltage clamping networks, and ESD-protected sensor biasing circuits where stable 36 V regulation and low leakage (<0.05 µA at VR = 27 V) are required.
Technical Context
This Zener diode operates in reverse breakdown mode with a hard knee characteristic, enabling sharp regulation onset at its specified test current. Its thermal resistance from junction to ambient is 340 K/W on FR4 PCB, supporting operation up to +150 °C junction temperature.
The device exhibits a positive temperature coefficient of +27.0 to +33.0 mV/K at IZ = 5 mA, making it suitable for temperature-compensated reference designs when paired with negative-coefficient components. Diode capacitance is 59 pF at 1 MHz and 0 V bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 35.07 V to 36.87 V at IZ = 5 mA - defines precise clamping threshold for 36 V rail protection |
| Differential Resistance rdif | ≤ 60 Ω at IZ = 5 mA - ensures minimal voltage shift under load variation |
| Reverse Leakage IR | ≤ 0.05 µA at VR = 27 V - enables ultra-low standby current in battery-backed systems |
| Power Dissipation Ptot | 400 mW at Tamb ≤ 25 °C - supports continuous regulation in compact SOD323 footprint |
| Temperature Coefficient SZ | +27.0 to +33.0 mV/K at IZ = 5 mA - allows predictable drift compensation in reference circuits |
| Forward Voltage VF | 0.9 V at IF = 10 mA - confirms low-loss forward conduction for bidirectional protection use |
| Junction Temperature Tj | −65 °C to +150 °C - meets extended-range requirements for automotive engine control units |
Pinout & Package
PDZ36B-QZ is housed in a SOD323 (SC-76) plastic surface-mount package measuring 1.8 mm × 1.35 mm × 0.95 mm, with cathode indicated by a marking bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential reference; forward conduction path when polarity reversed |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use per stress test standard, including temperature cycling and HTRB |
| Hard breakdown knee | Sharp, well-defined Zener transition enables accurate voltage clamping without soft saturation |
| Low dynamic impedance | 60 Ω at 5 mA ensures <100 mV output deviation across ±1 mA load changes |
| Ultra-low leakage | 0.05 µA max at 75 % of VZ preserves battery life in always-on monitoring circuits |
| SOD323 footprint compatibility | Standardized 0.95 mm pitch pad layout supports automated reflow assembly and IPC-7351 compliance |
Applications
| Automotive Engine Control Unit (ECU) Reference | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Provides stable 36 V reference for analog-to-digital converter (ADC) biasing in diesel ECU power management modules. IC Role / Device Role / Timing Role: Zener voltage reference establishing precise input range for 12-bit ADC sampling of boost pressure transducers. Use Value: ±2 % tolerance and +30 mV/K TC enable <±0.5 % full-scale accuracy over −40 °C to +125 °C operating range. |
Use Scenario: Clamps transient overvoltage on 24 V industrial IO-Link sensor lines exposed to inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor protecting RS-485 transceiver inputs during field wiring faults. Use Value: 36 V Zener voltage aligns with IEC 61000-4-4 Level 4 immunity requirements while maintaining <1 ns response time. |
| Telecom Power Supply Feedback | Battery Management System (BMS) Cell Monitoring |
Use Scenario: Sets regulation point in secondary-side feedback loop of isolated 48 V telecom DC-DC converter. IC Role / Device Role / Timing Role: Precision shunt reference replacing TL431 in optocoupler-coupled feedback path. Use Value: 60 Ω rdif reduces loop gain variation vs. temperature, improving load regulation to ±0.8 % over 0–100 % load. |
Use Scenario: Protects high-impedance cell voltage sense inputs in 12S Li-ion BMS against >40 V surge events. IC Role / Device Role / Timing Role: Overvoltage clamp limiting input to ±36 V before signal conditioning amplifier stage. Use Value: 0.05 µA leakage prevents measurable error in 10 MΩ sense network, preserving <1 mV measurement resolution. |
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-C36 | Same 36 V nominal Zener, but ±5 % tolerance and higher rdif (90 Ω); not AEC-Q101 qualified | Limited to commercial-grade power supplies; unsuitable for automotive environments requiring long-term reliability | Select when cost sensitivity outweighs automotive qualification and tighter regulation needs |
| MMSZ5245B | 36 V nominal, ±5 % tolerance, 100 Ω rdif, 500 mW Ptot, SOD-123 package (larger footprint) | Higher power handling supports 100 mA surge currents but requires 30 % more board area | Choose when surge robustness exceeds footprint constraints and AEC-Q101 is not mandatory |
Compared with BZX84-C36 and MMSZ5245B, PDZ36B-QZ delivers superior regulation stability (±2 % vs. ±5 %), lower dynamic impedance (60 Ω vs. ≥90 Ω), and guaranteed automotive qualification-making it the optimal choice for space-constrained, high-reliability 36 V reference and clamping functions.
Availability
PDZ36B-QZ is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor interfaces, telecom power supplies, and battery management systems requiring stable component supply with traceable sourcing and lifecycle continuity.
Supply support for PDZ36B-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, reliable discrete, logic, and MOSFET devices, with manufacturing rooted in process technology leadership and automotive-grade quality systems.
PDZ36B-QZ belongs to the PDZ-B-Q series of AEC-Q101-qualified Zener diodes engineered specifically for precision voltage regulation and transient suppression in harsh-environment automotive and industrial electronics.
FAQ
What is the maximum reverse current rating for PDZ36B-QZ at 100 µs pulse width?
The non-repetitive peak reverse current (IZSM) is 0.8 A at tp = 100 µs, Tamb = 25 °C, verified per IEC 60134 limiting values table. This rating enables transient suppression of short-duration surges without permanent degradation, provided thermal derating curves are observed.
How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
With a typical SZ of +30 mV/K at 5 mA, VZ shifts approximately +4.5 V across the full temperature range. For applications demanding tight regulation, this drift must be compensated via circuit design-e.g., pairing with a negative-TC component or using closed-loop feedback.
Can PDZ36B-QZ be used in bidirectional ESD protection configurations?
Yes-its symmetrical structure allows use as a unidirectional clamp (cathode to rail) or as part of a back-to-back pair for bidirectional protection. Forward voltage of 0.9 V at 10 mA ensures low insertion loss in series protection paths, while 36 V reverse standoff meets IEC 61000-4-2 Level 4 requirements.
Is the SOD323 package compatible with standard reflow soldering profiles?
Yes-the device is qualified for lead-free reflow per J-STD-020, with peak temperature up to 260 °C. Recommended footprint matches Nexperia's SOD323 layout (0.6 mm pad width, 0.5 mm spacing), and thermal resistance data assumes standard FR4 PCB with tin-plated copper and single-sided copper pour.
PDZ36B-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):
- 36 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 27 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
PDZ36B-QZ FAQ
1.How can I place an order for PDZ36B-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ36B-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 PDZ36B-QZ reliable?
The price and inventory of PDZ36B-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ36B-QZ is usually 5 days.
3.What payment methods are accepted for PDZ36B-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ36B-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ36B-QZ?
PDZ36B-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ36B-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 PDZ36B-QZ?
For technical support, including PDZ36B-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ36B-QZ requirements.
6.How does Aetrix verify that PDZ36B-QZ is sourced from the original manufacturer or authorized distributors?
All PDZ36B-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 PDZ36B-QZ meets industry standards.
7.What is the process for return or replacement of PDZ36B-QZ?
All PDZ36B-QZ units undergo pre-shipment inspection (PSI). If there is an issue with PDZ36B-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 PDZ36B-QZ part is unused and in its original packaging.
Return procedure for PDZ36B-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ36B-QZ Tags
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