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Nexperia USA Inc. PDZ4.7B,135
- Part No.:
- PDZ4.7B,135
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ4.7B,135.pdf
- Description:
- DIODE ZENER 4.7V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,904
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Product details
Overview
PDZ4.7B,135 from Nexperia is a single low-power Zener diode in SOD323 (SC-76) package, designed for precision voltage regulation at 4.7 V nominal working voltage with ±2 % tolerance, 600 Ω differential resistance at 1 mA, and 2 μA reverse current at 1 V. It delivers stable clamping in low-current bias networks and reference circuits for consumer power supplies and sensor signal conditioning.
For engineers reviewing the PDZ4.7B,135 datasheet, PDZ4.7B,135 pinout, PDZ4.7B,135 application, or PDZ4.7B,135 equivalent, this device is selected for compact, low-leakage Zener regulation where thermal resistance (Rth(j-a) = 340 K/W), forward voltage (VF ≤ 0.9 V @ 10 mA), and hard breakdown knee are critical to circuit stability under varying ambient conditions.
Technical Context
This Zener operates as a two-terminal voltage reference with cathode-anode polarity defined by a marking bar. Its 4.55–4.75 V working voltage range at IZ = 5 mA enables accurate DC biasing in analog front-ends and feedback loops without external amplification.
The device exhibits a negative temperature coefficient of −1.4 mV/K at IZ = 5 mA and maintains low dynamic impedance (600 Ω @ 1 mA), supporting stable regulation across −65 °C to +150 °C junction temperature range while dissipating up to 400 mW on FR4 PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VZ) | 4.55–4.75 V @ IZ = 5 mA - defines precise clamping threshold for 4.7 V nominal regulation |
| Differential Resistance (rdif) | 600 Ω @ IZ = 1 mA - ensures minimal voltage shift under small load variations |
| Reverse Current (IR) | 2 μA @ VR = 1 V - guarantees ultra-low leakage in high-impedance bias networks |
| Forward Voltage (VF) | ≤ 0.9 V @ IF = 10 mA - enables efficient forward conduction during transient recovery |
| Total Power Dissipation (Ptot) | 400 mW @ Tamb ≤ 25 °C - sets maximum continuous thermal load on standard FR4 PCB |
| Thermal Resistance (Rth(j-a)) | 340 K/W - determines junction-to-ambient temperature rise per watt dissipated |
| Junction Temperature (Tj) | −65 to +150 °C - defines operational envelope for industrial and extended-temperature designs |
Pinout & Package
PDZ4.7B,135 uses the SOD323 (SC-76) surface-mount plastic package: 1.7 mm × 1.35 mm footprint, 0.95 mm height, cathode indicated by a visible marking bar on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; polarity must be observed for correct Zener breakdown |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance at low current | 600 Ω @ 1 mA enables tight voltage control in micro-power bias circuits |
| Hard breakdown knee | Sharp transition into conduction improves regulation accuracy near nominal VZ |
| Ultra-low leakage current | 2 μA @ 1 V reverse bias preserves signal integrity in high-Z sensor interfaces |
| SOD323 package compatibility | Standardized 1.7 × 1.35 mm footprint supports automated placement and reflow soldering |
| ±2 % voltage tolerance | Reduces need for post-production trimming in cost-sensitive consumer power rails |
Applications
| Power Supply Reference | Sensor Bias Network |
|---|---|
|
Use Scenario: Providing stable 4.7 V reference for linear regulator feedback or ADC reference divider. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp voltage at precise DC level. Use Value: Delivers 4.7 V ±2 % regulation with <2 μA leakage, minimizing error in 12-bit ADC reference paths. |
Use Scenario: Biasing photodiode or RTD measurement circuits requiring low-noise, low-drift DC offset. IC Role / Device Role / Timing Role: Passive voltage reference establishing fixed bias point for transducer signal conditioning. Use Value: Hard breakdown knee and 600 Ω rdif ensure stable bias under varying photocurrent loads up to 100 μA. |
| Overvoltage Clamp | Microcontroller Reset Circuit |
|
Use Scenario: Protecting I/O pins from ESD or transient overvoltage in USB or GPIO lines. IC Role / Device Role / Timing Role: Two-terminal shunt protector diverting surge current above 4.7 V threshold. Use Value: 400 mW Ptot rating allows absorption of short-duration surges without thermal runaway on FR4 PCB. |
Use Scenario: Generating clean reset signal for MCU startup when supply rises through 4.7 V threshold. IC Role / Device Role / Timing Role: Voltage threshold detector enabling reset deassertion after power stabilization. Use Value: −1.4 mV/K temperature coefficient ensures predictable reset point across −40 to +85 °C ambient range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B4V7 | Same 4.7 V nominal, ±2 % tolerance, but SOD323 package with 500 mW Ptot and 550 Ω rdif @ 5 mA | Higher power handling suits higher-current bias networks; slightly lower rdif improves regulation linearity | Select when >300 mW continuous dissipation or tighter rdif is required |
| MMSZ4700T1G | 4.7 V nominal, ±5 % tolerance, SOD123 package, 500 mW Ptot, 100 Ω rdif @ 20 mA | Larger SOD123 footprint eases hand-soldering; wider tolerance increases calibration margin needs | Select for prototyping or legacy board compatibility where ±5 % VZ is acceptable |
Compared with BZX384-B4V7 and MMSZ4700T1G, PDZ4.7B,135 offers superior low-current regulation (600 Ω @ 1 mA vs. 550 Ω @ 5 mA and 100 Ω @ 20 mA) and tighter tolerance, making it optimal for micro-power, high-precision biasing where leakage (<2 μA) and thermal resistance (340 K/W) are design-critical.
Availability
PDZ4.7B,135 is available at Aetrix Electronics and suitable for consumer power supplies, sensor interface modules, and industrial I/O protection circuits requiring stable component supply and consistent Zener performance across production batches.
Supply support for PDZ4.7B,135 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 efficiency, miniaturization, and robustness for mass-market electronics.
The PDZ-B series targets general-purpose, low-power voltage regulation in space-constrained applications, emphasizing tight tolerance, low leakage, and hard breakdown characteristics for cost-sensitive yet precision-demanding designs.
FAQ
What is the maximum reverse voltage before breakdown for PDZ4.7B,135?
The PDZ4.7B,135 has a specified working voltage range of 4.55 V to 4.75 V at 5 mA test current. Breakdown begins within this range; operation below 4.55 V remains in non-conductive reverse region with ≤2 μA leakage at 1 V. Exceeding 4.75 V initiates controlled Zener conduction.
Can PDZ4.7B,135 be used in series for higher voltage regulation?
No - PDZ4.7B,135 is a single Zener diode with fixed 4.7 V nominal breakdown. Series connection introduces mismatched temperature coefficients and dynamic impedances, causing uneven voltage distribution and instability. Use a single higher-voltage Zener or dedicated voltage-reference IC instead.
Is PDZ4.7B,135 suitable for automotive applications?
No - PDZ4.7B,135 is not automotive-qualified. The datasheet explicitly states non-automotive qualification, and it lacks AEC-Q101 stress testing, extended temperature validation beyond 150 °C junction, or guaranteed PPAP documentation required for automotive use.
How does the SOD323 package affect thermal performance?
The SOD323 package yields Rth(j-a) = 340 K/W on standard FR4 PCB, meaning each watt of dissipation raises junction temperature by 340 K above ambient. At 400 mW max power, this results in ~136 K rise - requiring layout attention to copper area and airflow to maintain Tj ≤ 150 °C in high-ambient environments.
PDZ4.7B,135 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PDZ-B
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PDZ4.7B,135 FAQ
1.How can I place an order for PDZ4.7B,135 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ4.7B,135 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,135 reliable?
The price and inventory of PDZ4.7B,135 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,135 is usually 5 days.
3.What payment methods are accepted for PDZ4.7B,135?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ4.7B,135 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ4.7B,135?
PDZ4.7B,135 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ4.7B,135 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,135?
For technical support, including PDZ4.7B,135 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ4.7B,135 requirements.
6.How does Aetrix verify that PDZ4.7B,135 is sourced from the original manufacturer or authorized distributors?
All PDZ4.7B,135 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,135 meets industry standards.
7.What is the process for return or replacement of PDZ4.7B,135?
All PDZ4.7B,135 units undergo pre-shipment inspection (PSI). If there is an issue with PDZ4.7B,135, 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,135 part is unused and in its original packaging.
Return procedure for PDZ4.7B,135:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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