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Nexperia USA Inc. PDZ3.3B-QZ
- Part No.:
- PDZ3.3B-QZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ3.3B-QZ.pdf
- Description:
- DIODE ZENER 3.3V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,249
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Product details
Overview
PDZ3.3B-QZ from Nexperia is a single silicon Zener diode designed for low-power voltage regulation in automotive and industrial circuits, with a nominal Zener voltage of 3.32 V to 3.53 V at IZ = 5 mA, ±2 % tolerance, 400 mW total power dissipation, and qualified per AEC-Q101 for under-hood applications.
For engineers reviewing the PDZ3.3B-QZ datasheet, PDZ3.3B-QZ pinout, PDZ3.3B-QZ application, or PDZ3.3B-QZ equivalent, this device supports precision clamping in power supply feedback loops, ESD protection interfaces, and reference voltage generation where tight voltage stability and low leakage (<5 µA at VR) are required.
Technical Context
This Zener diode operates in reverse breakdown mode with a hard knee characteristic and low dynamic impedance (95 Ω max at IZ = 5 mA), enabling stable regulation even under low-current conditions (IZ ≥ 0.5 mA). Its negative temperature coefficient (−2.4 mV/K) ensures predictable drift behavior across −65 °C to +150 °C junction temperature range.
Designed for surface-mount use in SOD323 (SC-76) package, it delivers thermal resistance of 130 K/W (junction-to-solder point) and 340 K/W (junction-to-ambient) on FR4 PCB, supporting reliable operation up to 150 °C junction temperature without derating below 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.32 V to 3.53 V at IZ = 5 mA - defines precise clamping threshold for 3.3 V rail stabilization |
| Tolerance | ±2 % - enables tight voltage margin control in feedback networks without trimming |
| Differential Resistance (rdif) | ≤95 Ω at IZ = 5 mA - ensures minimal output voltage shift under load transients |
| Reverse Current (IR) | ≤5 µA at VR = 1 V - guarantees low standby power loss in always-on circuits |
| Power Dissipation (Ptot) | 400 mW at Tamb ≤ 25 °C - supports continuous regulation in compact SMT layouts |
| Thermal Resistance (Rth(j-sp)) | 130 K/W - allows direct thermal coupling to PCB copper for passive cooling |
| Temperature Coefficient (SZ) | −2.4 mV/K at IZ = 5 mA - provides known, linear drift for compensated reference designs |
Pinout & Package
PDZ3.3B-QZ is housed in a SOD323 (SC-76) plastic surface-mounted package with two leads: anode (A) and cathode (K). The marking bar on the device body identifies the cathode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes bias path for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Low leakage current | ≤5 µA at 1 V reverse bias - minimizes quiescent current in battery-powered systems |
| Hard breakdown knee | Sharp transition into regulation at VZ - improves accuracy in low-current sensing applications |
| Small SOD323 footprint | 1.35 mm × 0.8 mm body size - enables high-density placement on space-constrained PCBs |
| Wide operating temperature | −65 °C to +150 °C junction range - supports under-hood and industrial ambient environments |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage clamping on LIN bus transceiver supply lines to prevent overvoltage damage during load dump events. IC Role / Device Role / Timing Role: Zener clamp protecting 3.3 V LDO input against transient spikes up to 40 V. Use Value: Maintains system uptime by limiting voltage excursions to <3.6 V while drawing <5 µA leakage at nominal 3.3 V rail. |
Use Scenario: Providing stable 3.3 V reference for 12-bit ADC in temperature sensor front-end. IC Role / Device Role / Timing Role: Precision shunt reference replacing larger three-terminal regulators in low-power analog signal chains. Use Value: Delivers ±2 % initial accuracy and −2.4 mV/K drift, enabling <±0.5 % full-scale error over −40 °C to +125 °C. |
| USB-C Power Delivery Interface | Smart Meter Voltage Monitoring |
Use Scenario: Overvoltage protection for CC line voltage detection circuitry in USB-C port controllers. IC Role / Device Role / Timing Role: Fast-response clamp limiting CC pin voltage to safe levels during hot-plug transients. Use Value: Responds within nanoseconds due to low capacitance (410 pF at 0 V), preventing false PD contract negotiation failures. |
Use Scenario: Reference voltage source for anti-tampering voltage monitoring in utility meter tamper-detection circuitry. IC Role / Device Role / Timing Role: Low-drift shunt reference feeding comparator input to detect AC mains brownout or surge conditions. Use Value: Stable 3.32–3.53 V window ensures consistent trip thresholds across 15-year field life with <5 µA aging-related drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V3 | Same 3.3 V nominal Zener voltage, but ±5 % tolerance and higher rdif (120 Ω); not AEC-Q101 qualified | Limited to commercial-grade consumer electronics; unsuitable for automotive or long-life industrial deployments | Select when cost sensitivity outweighs precision and qualification requirements |
| MMSZ4683T1G | 3.3 V nominal, ±5 % tolerance, 500 mW Ptot, but higher leakage (10 µA at 1 V) and no AEC-Q101 validation | Acceptable for non-safety-critical power supply feedback, but lacks automotive reliability assurance | Prefer only for prototyping or non-automotive production where thermal margin >100 mW is available |
Compared with BZX384-B3V3 and MMSZ4683T1G, PDZ3.3B-QZ offers tighter tolerance, lower leakage, and certified automotive qualification-making it the sole choice for production systems requiring guaranteed long-term stability and stress-test compliance.
Availability
PDZ3.3B-QZ is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor modules, USB-C interface protection, and smart metering systems requiring stable component supply with full traceability and lifecycle support.
Supply support for PDZ3.3B-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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
PDZ3.3B-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 control systems.
FAQ
What is the maximum reverse voltage before breakdown for PDZ3.3B-QZ?
The PDZ3.3B-QZ exhibits a sharp Zener breakdown between 3.32 V and 3.53 V at 5 mA test current, with no defined "maximum reverse voltage" prior to conduction-its rated reverse working voltage (VR) is 1 V, beyond which leakage rises nonlinearly. Operation above 3.32 V initiates controlled regulation, not destructive avalanche.
Can PDZ3.3B-QZ be used in parallel for higher power handling?
No-Zener diodes cannot be reliably paralleled due to mismatched breakdown voltages and thermal runaway risk. Each PDZ3.3B-QZ must operate independently within its 400 mW limit; for higher power, use a single higher-rated Zener or switch to an active regulator topology.
Is the SOD323 package compatible with standard reflow profiles?
Yes-Nexperia specifies compatibility with IPC/JEDEC J-STD-020D reflow profiles. The SOD323 footprint requires 0.6 mm solder land width, 0.5 mm spacing, and peak temperatures ≤260 °C for ≤30 seconds, matching standard lead-free assembly processes.
Does PDZ3.3B-QZ require external series resistance in typical applications?
Yes-a current-limiting resistor is mandatory to set IZ within 0.5 mA to 20 mA range and prevent thermal runaway. For 3.3 V regulation from a 5 V supply, a 220 Ω resistor limits IZ to ~7.7 mA, staying within 95 Ω rdif and 400 mW Ptot limits.
PDZ3.3B-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:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 3.3 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 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
PDZ3.3B-QZ FAQ
1.How can I place an order for PDZ3.3B-QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ3.3B-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 PDZ3.3B-QZ reliable?
The price and inventory of PDZ3.3B-QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ3.3B-QZ is usually 5 days.
3.What payment methods are accepted for PDZ3.3B-QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ3.3B-QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ3.3B-QZ?
PDZ3.3B-QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ3.3B-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 PDZ3.3B-QZ?
For technical support, including PDZ3.3B-QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ3.3B-QZ requirements.
6.How does Aetrix verify that PDZ3.3B-QZ is sourced from the original manufacturer or authorized distributors?
All PDZ3.3B-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 PDZ3.3B-QZ meets industry standards.
7.What is the process for return or replacement of PDZ3.3B-QZ?
All PDZ3.3B-QZ units undergo pre-shipment inspection (PSI). If there is an issue with PDZ3.3B-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 PDZ3.3B-QZ part is unused and in its original packaging.
Return procedure for PDZ3.3B-QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ3.3B-QZ Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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