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Nexperia USA Inc. PDZ3.9BGWX
- Part No.:
- PDZ3.9BGWX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
PDZ3.9BGWX.pdf
- Description:
- DIODE ZENER 3.9V 365MW SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:1,280
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Product details
Overview
PDZ3.9BGWX from Nexperia is a single Zener diode in SOD123 surface-mount package, designed for precision voltage regulation and reference applications at nominal 3.9 V (IZ = 5 mA), with ±2 % tolerance (B-series), 90 Ω max differential resistance, 3 μA max reverse current at VR = 3.0 V, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the PDZ3.9BGWX datasheet, PDZ3.9BGWX pinout, PDZ3.9BGWX application, or PDZ3.9BGWX equivalent, this device serves as a stable, low-capacitance (370 pF @ 1 MHz) voltage clamp in power supply feedback loops, overvoltage protection circuits, and analog reference networks where tight Zener voltage control and thermal stability are required.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 3.89 V to 4.16 V at 5 mA test current, exhibiting a negative temperature coefficient of −2.5 mV/K - enabling predictable drift compensation in temperature-sensitive references. Its low 3 μA IR at 3.0 V ensures minimal leakage in high-impedance bias networks.
The device supports non-repetitive surge handling up to 8.0 A peak reverse current (tp = 100 μs) and delivers 365 mW total power dissipation on standard FR4 PCB, with thermal resistance from junction to solder point at 50 K/W - critical for compact, thermally constrained layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.89 V to 4.16 V at IZ = 5 mA - defines precise clamping threshold for regulation and protection |
| Tolerance | ±2 % (B-series) - enables accurate voltage referencing without post-production trimming |
| Differential Resistance rdif | ≤90 Ω - ensures minimal dynamic impedance shift under load variation |
| Reverse Current IR | ≤3 μA at VR = 3.0 V - guarantees low standby power loss in high-Z sensing paths |
| Capacitance Cd | 370 pF at f = 1 MHz, VR = 0 V - limits high-frequency noise coupling in signal conditioning stages |
| Thermal Resistance Rth(j-sp) | 50 K/W - allows direct thermal path modeling from junction to cathode solder pad |
| AEC-Q101 Qualified | Validated for automotive use - supports deployment in engine control units, body electronics, and ADAS sensor interfaces |
Pinout & Package
PDZ3.9BGWX uses the SOD123 plastic surface-mount package (3.75 mm × 2.55 mm × 1.3 mm), optimized for automated assembly and thermal performance on FR4 PCBs with standard reflow footprint per Nexperia drawing 16-05-10.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked side) | Cathode (K) | Connected to regulated output or reference node; marking bar identifies this terminal for polarity-critical placement |
| 2 | Anode (A) | Typically grounded or tied to lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables direct substitution in precision 3.9 V reference designs without calibration |
| Low 3 μA reverse leakage at 3.0 V | Reduces error in high-impedance divider networks used in ADC references and comparator thresholds |
| 370 pF junction capacitance | Minimizes signal distortion in fast-switching clamp circuits and ESD protection front-ends |
| AEC-Q101 qualification | Confirms robustness across −55 °C to +150 °C ambient range for under-hood and infotainment systems |
| Non-repetitive 8.0 A surge capability | Provides transient overvoltage immunity in 12 V automotive power rails without external TVS stacking |
Applications
| Automotive Power Rail Clamp | ADC Reference Voltage Stabilizer |
|---|---|
|
Use Scenario: Clamping transients on 12 V battery-supplied microcontroller power inputs in body control modules. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to limit voltage excursions above 4.2 V. Use Value: Prevents MCU brown-out or latch-up during load-dump events while maintaining <100 ns response due to low junction capacitance. |
Use Scenario: Providing stable 3.9 V reference for 12-bit SAR ADCs in engine sensor signal conditioning. IC Role / Device Role / Timing Role: Precision shunt reference establishing known voltage for ADC VREF input. Use Value: ±2 % tolerance and −2.5 mV/K TC enable <±0.5 % full-scale accuracy across −40 °C to +125 °C without trimming. |
| Overvoltage Protection for CAN Transceivers | Low-Power Sensor Bias Network |
|
Use Scenario: Protecting CANH/CANL pins of ISO 11898-2 transceivers against ESD and inductive spikes. IC Role / Device Role / Timing Role: Fast-reacting shunt clamp limiting bus voltage to safe levels during fault conditions. Use Value: 370 pF capacitance avoids signal integrity degradation on 1 Mbps CAN bus; 8.0 A surge rating handles IEC 61000-4-5 Level 3 surges. |
Use Scenario: Biasing NTC thermistors and Hall-effect sensors in battery management systems with ultra-low quiescent current. IC Role / Device Role / Timing Role: Low-leakage Zener providing regulated bias voltage in µA-level current paths. Use Value: ≤3 μA IR at 3.0 V ensures <0.1 % measurement error in 100 kΩ sensor dividers, extending battery life in wireless nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B3V9 | Same 3.9 V nominal, ±2 %, but SOD323 package (smaller size, higher Rth(j-a)) | Limited power handling (200 mW vs 365 mW); less suitable for sustained 5 mA regulation loads | Prefer PDZ3.9BGWX when board space permits and thermal margin >20 K/W is needed. |
| MMSZ4685 | 3.9 V, ±5 % tolerance, 100 Ω rdif, no AEC-Q101 qualification | Higher voltage drift and unqualified for automotive; acceptable only in commercial-grade consumer power supplies | Select PDZ3.9BGWX for automotive, industrial, or any design requiring guaranteed ±2 % and AEC compliance. |
Compared with BZX384-B3V9 and MMSZ4685, PDZ3.9BGWX uniquely combines AEC-Q101 qualification, ±2 % tolerance, and 365 mW dissipation in SOD123 - making it the only choice for automotive-clamp and precision-reference roles demanding both accuracy and ruggedness.
Availability
PDZ3.9BGWX is available at Aetrix Electronics and suitable for automotive power clamping, precision analog reference generation, and low-leakage sensor biasing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PDZ3.9BGWX 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.
The PDZ-GW series targets general-purpose Zener regulation in automotive and industrial environments, emphasizing AEC-Q101 compliance, tight voltage tolerance, and robust surge performance in compact SMD packages.
FAQ
What is the maximum continuous Zener current for PDZ3.9BGWX at 25 °C ambient?
The device supports up to 93 mA DC current at Tamb = 25 °C, calculated from Ptot = 365 mW and VZ ≈ 3.9 V (365 mW ÷ 3.9 V ≈ 93 mA). Derating applies above 25 °C per the thermal resistance curve in the datasheet.
Does PDZ3.9BGWX require a heatsink for standard PCB mounting?
No heatsink is required. With Rth(j-sp) = 50 K/W and typical 365 mW dissipation, junction-to-solder-point temperature rise is ~18 °C - well within the 150 °C Tj limit when mounted on standard FR4 with 1 cm² cathode pad.
How does the −2.5 mV/K temperature coefficient affect circuit accuracy over temperature?
At 3.9 V nominal, −2.5 mV/K yields ~−0.064 %/°C drift. Over −40 °C to +125 °C (165 K span), total shift is ~−413 mV (−10.6 %), but actual deviation is bounded by min/max VZ specs (3.89 V to 4.16 V), ensuring <±7 % band across full range.
Can PDZ3.9BGWX be used in parallel for higher power dissipation?
No - Zener diodes exhibit negative temperature coefficients and mismatched VZ tolerances, causing current hogging and thermal runaway. For higher power, use a single higher-rated device or active regulation instead of paralleling.
PDZ3.9BGWX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PDZ-GW
- Package/Case:
- SOD-123W
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.9 V
- Tolerance:
- ±2%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 3 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-123W
PDZ3.9BGWX FAQ
1.How can I place an order for PDZ3.9BGWX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ3.9BGWX 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 PDZ3.9BGWX reliable?
The price and inventory of PDZ3.9BGWX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ3.9BGWX is usually 5 days.
3.What payment methods are accepted for PDZ3.9BGWX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ3.9BGWX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ3.9BGWX?
PDZ3.9BGWX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ3.9BGWX 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 PDZ3.9BGWX?
For technical support, including PDZ3.9BGWX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ3.9BGWX requirements.
6.How does Aetrix verify that PDZ3.9BGWX is sourced from the original manufacturer or authorized distributors?
All PDZ3.9BGWX 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 PDZ3.9BGWX meets industry standards.
7.What is the process for return or replacement of PDZ3.9BGWX?
All PDZ3.9BGWX units undergo pre-shipment inspection (PSI). If there is an issue with PDZ3.9BGWX, 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 PDZ3.9BGWX part is unused and in its original packaging.
Return procedure for PDZ3.9BGWX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ3.9BGWX Tags
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