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Nexperia USA Inc. PDZ3.3B-QF
- Part No.:
- PDZ3.3B-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ3.3B-QF.pdf
- Description:
- DIODE ZENER 3.3V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:3,814
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Product details
Overview
PDZ3.3B-QF from Nexperia is a single silicon Zener diode designed for low-power voltage regulation in surface-mounted circuits, with a nominal Zener voltage of 3.32 V to 3.53 V at 5 mA, ±2 % tolerance, 95 Ω maximum differential resistance, and 5 μA maximum reverse leakage at 1.0 V, qualified per AEC-Q101 for automotive use.
For engineers reviewing the PDZ3.3B-QF datasheet, PDZ3.3B-QF pinout, PDZ3.3B-QF application, or PDZ3.3B-QF equivalent, this device serves as a precision shunt reference in power supply feedback paths, ESD-protected I/O clamping networks, and low-current biasing circuits where stable 3.3 V regulation under variable load is required.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its cathode-anode terminals. Its hard breakdown knee and low dynamic impedance (≤95 Ω at 5 mA) ensure minimal voltage variation under changing current conditions, supporting accurate regulation in low-noise analog subsystems.
Thermal resistance from junction to solder point is 130 K/W, enabling reliable operation up to 150 °C junction temperature. The device's negative temperature coefficient of −2.4 mV/K at 5 mA allows predictable drift compensation in temperature-sensitive designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.32 V to 3.53 V at IZ = 5 mA - defines stable regulation point for 3.3 V rail monitoring and clamping |
| Differential Resistance (rdif) | ≤95 Ω at IZ = 5 mA - ensures <10 mV output shift per 1 mA current change in feedback loops |
| Reverse Leakage (IR) | ≤5 μA at VR = 1.0 V - minimizes parasitic loading on high-impedance sensor or reference nodes |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - enables use as low-drop clamp in bidirectional protection schemes |
| Power Dissipation (Ptot) | 400 mW at Tamb ≤ 25 °C - supports continuous operation in compact SOD323 PCB footprints without forced cooling |
| Temperature Coefficient (SZ) | −2.4 mV/K at IZ = 5 mA - enables predictable thermal drift modeling in automotive ambient ranges |
Pinout & Package
PDZ3.3B-QF is housed in a SOD323 (SC-76) plastic surface-mount package measuring 1.8 mm × 1.35 mm × 0.95 mm, with gull-wing leads optimized for reflow soldering on FR4 PCBs using standard footprint dimensions (0.6 mm pad width, 2.1 mm center-to-center spacing).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked side) | Cathode (K) | Connected to regulated voltage node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTGB, HTRB, and temperature cycling per JESD22-A108 |
| Hard breakdown knee | Sharp, low-hysteresis transition into conduction enables precise threshold detection in overvoltage monitors |
| Low leakage at low VR | 5 μA max at 1.0 V reverse bias preserves signal integrity in high-Z analog input protection stages |
| Small SOD323 footprint | 1.8 mm × 1.35 mm body size supports dense layout in space-constrained ECUs and ADAS modules |
Applications
| Automotive Body Control Module (BCM) Power Supervision | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Monitoring 3.3 V microcontroller supply rail in door module electronics for brown-out detection. IC Role / Device Role / Timing Role: Shunt reference providing stable trip point for supervisor IC reset assertion. Use Value: ±2 % VZ tolerance and −2.4 mV/K TC enable accurate reset threshold across −40 °C to +125 °C ambient. |
Use Scenario: Clamping analog output of a 3.3 V rail-powered temperature sensor before ADC input. IC Role / Device Role / Timing Role: Low-leakage Zener limiting signal swing to prevent ADC saturation during transients. Use Value: 5 μA max reverse current at 1.0 V avoids loading high-impedance sensor output (<100 kΩ source impedance). |
| USB-C Port Overvoltage Protection | Low-Power IoT Node Voltage Reference |
Use Scenario: Bidirectional clamping on CC line to protect USB PD controller from >5.5 V surges. IC Role / Device Role / Timing Role: Forward-conducting anode-cathode path absorbs positive transients; reverse Zener clamps negative excursions. Use Value: 0.9 V forward drop at 10 mA limits forward surge energy while 3.32–3.53 V Zener range matches USB-C spec margin. |
Use Scenario: Providing stable bias for ultra-low-power op-amp in battery-operated environmental sensor node. IC Role / Device Role / Timing Role: Passive reference generating fixed 3.3 V node from higher battery voltage via series resistor. Use Value: 95 Ω rdif ensures <±3 mV regulation error across 1–10 mA load variation, extending battery life vs. active references. |
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 SOD323 package; 3.3 V nominal, ±5 % tolerance; 90 Ω rdif; not AEC-Q101 qualified | Lacks automotive qualification; suitable only for commercial-grade consumer or industrial control boards | Select when AEC-Q101 compliance is unnecessary and cost sensitivity outweighs long-term reliability requirements |
| MMSZ4683T1G | SOD123 package; 3.3 V nominal, ±5 %; 100 Ω rdif; AEC-Q101 qualified; Ptot = 500 mW | Larger footprint (3.5 mm × 1.6 mm); higher power rating but less board-area efficient | Select when higher power margin (>400 mW) is needed or existing design uses SOD123 land pattern |
Compared with BZX384-B3V3 and MMSZ4683T1G, PDZ3.3B-QF uniquely combines AEC-Q101 qualification, ±2 % tight tolerance, and minimal SOD323 footprint-making it optimal for space-constrained automotive modules requiring precise, production-grade voltage referencing.
Availability
PDZ3.3B-QF is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB-C protection circuits, and low-power IoT node voltage referencing requiring stable component supply with full traceability and lifecycle support.
Supply support for PDZ3.3B-QF 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 advanced packaging technologies.
The PDZ-B-Q series targets automotive and industrial applications demanding robust, small-footprint Zener regulation-designed specifically to replace legacy through-hole Zeners in next-generation ECU, ADAS, and sensor interface designs.
FAQ
What is the maximum reverse current the PDZ3.3B-QF can handle without damage?
The non-repetitive peak reverse current (IZSM) is rated at 8.0 A for 100 µs square-wave pulses at 25 °C ambient. Continuous reverse current must remain below the Zener test current (5 mA typical) to avoid thermal runaway; sustained operation above 400 mW total dissipation requires derating per the curve in Figure 1.
How does the −2.4 mV/K temperature coefficient affect circuit accuracy over temperature?
At 5 mA Zener current, the voltage shifts −2.4 mV per Kelvin rise. From −40 °C to +125 °C (165 K span), total drift is approximately −396 mV - meaning VZ decreases from ~3.53 V to ~3.13 V. This predictable linear drift allows software or hardware compensation in closed-loop systems.
Can PDZ3.3B-QF be used in forward-bias protection applications?
Yes: its forward voltage is ≤0.9 V at 10 mA, making it suitable for low-drop bidirectional clamping. In forward bias, it conducts like a standard silicon diode; in reverse, it regulates at 3.32–3.53 V. This dual-mode behavior supports I/O line protection where both polarity transients must be limited.
Is the SOD323 footprint compatible with automated optical inspection (AOI) after reflow?
Yes: the SOD323 outline (Figure 8) features clear cathode marking bar and standardized lead geometry. With the recommended reflow footprint (Figure 9), solder joint quality-including coplanarity, fillet shape, and voiding-is fully inspectable using standard AOI systems calibrated for 0402-class packages.
PDZ3.3B-QF 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-QF FAQ
1.How can I place an order for PDZ3.3B-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ3.3B-QF 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-QF reliable?
The price and inventory of PDZ3.3B-QF 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-QF is usually 5 days.
3.What payment methods are accepted for PDZ3.3B-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ3.3B-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ3.3B-QF?
PDZ3.3B-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ3.3B-QF 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-QF?
For technical support, including PDZ3.3B-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ3.3B-QF requirements.
6.How does Aetrix verify that PDZ3.3B-QF is sourced from the original manufacturer or authorized distributors?
All PDZ3.3B-QF 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-QF meets industry standards.
7.What is the process for return or replacement of PDZ3.3B-QF?
All PDZ3.3B-QF units undergo pre-shipment inspection (PSI). If there is an issue with PDZ3.3B-QF, 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-QF part is unused and in its original packaging.
Return procedure for PDZ3.3B-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ3.3B-QF Tags
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MMSZ5231B-7-F
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MM5Z5V1ST1G
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