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Nexperia USA Inc. PDZ4.7B-QF
- Part No.:
- PDZ4.7B-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ4.7B-QF.pdf
- Description:
- DIODE ZENER 4.7V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,055
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Product details
Overview
PDZ4.7B-QF from Nexperia is a single Zener diode in SOD323 (SC-76) package, designed for low-power voltage regulation at nominal 4.7 V with ±2 % tolerance, 600 Ω dynamic impedance at 1 mA, and 2 µA reverse leakage at 3.5 V. It delivers stable reference voltage in automotive power supply rails and sensor biasing circuits.
For engineers reviewing the PDZ4.7B-QF datasheet, PDZ4.7B-QF pinout, PDZ4.7B-QF application, or PDZ4.7B-QF equivalent, this device supports AEC-Q101-compliant designs requiring precise low-current Zener regulation, thermal stability up to +150 °C junction temperature, and surface-mount compatibility on FR4 PCBs with standard reflow footprints.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal working voltage of 4.7 V at 5 mA test current, exhibiting a temperature coefficient of −1.4 mV/K across 1–12 mA, enabling predictable drift compensation in analog reference circuits. Its hard breakdown knee and low leakage ensure clean regulation under light-load conditions.
The device features a maximum total power dissipation of 400 mW at 25 °C ambient on FR4 PCB, derating linearly above 25 °C per the published curve, and achieves 325 pF capacitance at 1 MHz and 0 V reverse bias-critical for noise-sensitive voltage reference nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VZ) | 4.55 V to 4.75 V at IZ = 5 mA - defines tight regulation band for precision 4.7 V reference |
| Dynamic Resistance (rdif) | 600 Ω at IZ = 1 mA - determines output impedance and load regulation sensitivity |
| Reverse Leakage (IR) | 2 µA max at VR = 3.5 V - ensures minimal quiescent current draw in battery-powered systems |
| Power Dissipation (Ptot) | 400 mW max at Tamb = 25 °C on FR4 PCB - sets thermal design margin for compact layouts |
| Junction Temperature (Tj) | +150 °C max - enables operation in under-hood automotive environments |
| Thermal Resistance (Rth(j-sp)) | 130 K/W junction-to-solder-point - informs solder joint thermal path efficiency |
Pinout & Package
PDZ4.7B-QF uses the SOD323 (SC-76) surface-mount plastic package: 2-terminal, 1.35 mm × 0.8 mm body, 0.45 mm height, cathode marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased configuration establishes Zener voltage drop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics |
| Hard breakdown knee | Sharp, low-hysteresis transition into conduction improves regulation accuracy at low currents |
| Low dynamic impedance | 600 Ω at 1 mA enables stable voltage reference even with varying load current |
| Small SOD323 footprint | 0.8 mm × 1.35 mm area saves board space in dense automotive ECUs and portable sensors |
Applications
| Automotive ECU Power Rail Clamping | Industrial Sensor Bias Reference |
|---|---|
Use Scenario: Clamp transient overvoltage on 5 V microcontroller supply rail in engine control units exposed to load dump events. IC Role / Device Role / Timing Role: Zener clamping element providing fast, passive overvoltage protection without active circuitry. Use Value: Limits rail excursion to ≤5.2 V during 100 µs surges, preserving MCU integrity while drawing <2 µA standby current. |
Use Scenario: Provide stable 4.7 V bias for analog front-end amplifiers in industrial temperature transmitters. IC Role / Device Role / Timing Role: Precision voltage reference source with −1.4 mV/K tempco for offset calibration. Use Value: Enables <±0.5% full-scale accuracy over −40 °C to +125 °C ambient without trimming. |
| USB-C Port Overvoltage Protection | IoT Node Battery Monitoring Reference |
Use Scenario: Protect USB-C data line receivers from accidental 5 V overvoltage during hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance (325 pF) shunt clamp placed directly at IC input pin. Use Value: Prevents latch-up with <1 ns response time and no signal distortion due to minimal parasitic capacitance. |
Use Scenario: Reference voltage for ADC measurement of Li-ion cell voltage in wireless asset trackers. IC Role / Device Role / Timing Role: Low-leakage (2 µA) Zener supplying reference to 12-bit SAR ADC. Use Value: Extends battery life beyond 5 years in sleep-mode operation while maintaining ±10 mV reference accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C4V7 | Same 4.7 V nominal, ±5 % tolerance, 500 mW Ptot, SOT23 package | Larger footprint, higher leakage (5 µA), not AEC-Q101 qualified | Select for cost-sensitive non-automotive consumer designs where qualification is not required |
| MMSZ4704T1G | 4.7 V nominal, ±5 % tolerance, 500 mW Ptot, SOD123 package | Higher thermal resistance (400 K/W), larger size, automotive-grade but no AEC-Q101 documentation cited | Choose when board layout allows SOD123 and higher power margin is needed over extended ambient range |
Compared with BZX84-C4V7 and MMSZ4704T1G, PDZ4.7B-QF offers tighter ±2 % tolerance, lower leakage, AEC-Q101 validation, and optimized SOD323 thermal performance-making it preferred for space-constrained, high-reliability automotive voltage references.
Availability
PDZ4.7B-QF is available at Aetrix Electronics and suitable for automotive ECU power management, industrial sensor biasing, and IoT battery monitoring requiring stable component supply across long production lifecycles.
Supply support for PDZ4.7B-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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on automotive, industrial, and mobile markets.
PDZ4.7B-QF belongs to the PDZ-B-Q series of AEC-Q101-qualified Zener diodes engineered specifically for robust, low-power voltage regulation in harsh automotive environments.
FAQ
What is the maximum reverse voltage before breakdown for PDZ4.7B-QF?
The PDZ4.7B-QF exhibits a sharp breakdown at 4.55 V minimum and 4.75 V maximum when tested at 5 mA. Below 4.55 V, reverse leakage remains ≤2 µA at 3.5 V; no defined "maximum reverse voltage before breakdown" is specified-the device is intended for controlled Zener operation within its rated VZ band.
Can PDZ4.7B-QF be used in parallel for higher power handling?
No-Zener diodes exhibit manufacturing spread in VZ, causing current hogging if paralleled. The PDZ4.7B-QF's ±2 % tolerance means two units could differ by up to 190 mV, leading to >90 % of current flowing through the lower-VZ unit. Use a single device within its 400 mW limit or select a higher-power alternative.
Is the SOD323 package compatible with standard reflow profiles?
Yes-Nexperia specifies a reflow footprint matching JEDEC J-STD-020 requirements. The recommended solder land pattern is 0.5 mm × 0.6 mm per pad with 0.6 mm spacing, supporting peak temperatures up to 260 °C for ≤10 seconds, fully compatible with lead-free SAC305 processes.
How does temperature affect regulation accuracy in PDZ4.7B-QF?
PDZ4.7B-QF has a temperature coefficient of −1.4 mV/K at IZ = 5 mA. Over −40 °C to +125 °C, this causes ≈−230 mV total drift in VZ. For high-accuracy applications, this must be compensated via circuit design or selected alongside complementary tempcos in feedback networks.
PDZ4.7B-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):
- 4.7 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 2 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
PDZ4.7B-QF FAQ
1.How can I place an order for PDZ4.7B-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ4.7B-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 PDZ4.7B-QF reliable?
The price and inventory of PDZ4.7B-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ4.7B-QF is usually 5 days.
3.What payment methods are accepted for PDZ4.7B-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ4.7B-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ4.7B-QF?
PDZ4.7B-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ4.7B-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 PDZ4.7B-QF?
For technical support, including PDZ4.7B-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ4.7B-QF requirements.
6.How does Aetrix verify that PDZ4.7B-QF is sourced from the original manufacturer or authorized distributors?
All PDZ4.7B-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 PDZ4.7B-QF meets industry standards.
7.What is the process for return or replacement of PDZ4.7B-QF?
All PDZ4.7B-QF units undergo pre-shipment inspection (PSI). If there is an issue with PDZ4.7B-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 PDZ4.7B-QF part is unused and in its original packaging.
Return procedure for PDZ4.7B-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ4.7B-QF Tags
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MM5Z5V1ST1G
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