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Nexperia USA Inc. PDZ4.3BGWX
- Part No.:
- PDZ4.3BGWX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
PDZ4.3BGWX.pdf
- Description:
- DIODE ZENER 4.3V 365MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,930
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Product details
Overview
PDZ4.3BGWX from Nexperia is a single Zener diode in SOD123 package, designed for precision voltage regulation and reference functions in low-power analog circuits. It delivers a nominal Zener voltage of 4.3 V at 5 mA, ±2 % tolerance (B-series), 90 Ω maximum differential resistance, −2.5 mV/K temperature coefficient, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the PDZ4.3BGWX datasheet, PDZ4.3BGWX pinout, PDZ4.3BGWX application, or PDZ4.3BGWX equivalent, key selection criteria include Zener voltage accuracy, thermal stability under ambient variation, reverse leakage at bias conditions, surge handling capability (40 W non-repetitive), and surface-mount compatibility with standard FR4 PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable DC reference voltage across load variations and supply fluctuations. Its −2.5 mV/K temperature coefficient ensures predictable drift behavior between 25 °C and 150 °C, and its 90 Ω dynamic impedance supports tight regulation in feedback networks.
The device is rated for 365 mW total power dissipation at 25 °C ambient on standard FR4 PCB, with junction-to-ambient thermal resistance of 340 K/W. Non-repetitive peak reverse current reaches 8.0 A for 100 μs pulses, enabling transient overvoltage clamping in protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.17 V to 4.48 V at IZ = 5 mA - defines precise regulation point for feedback or reference use |
| Tolerance | ±2 % (B-series) - enables high-accuracy voltage setting without post-calibration |
| Differential Resistance (rdif) | ≤90 Ω at IZ = 5 mA - determines regulation stiffness against load current changes |
| Temperature Coefficient (SZ) | −2.5 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius rise |
| Reverse Current (IR) | ≤3 μA at VR = 1 V - ensures minimal quiescent power loss in standby mode |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 μs - supports short-duration surge suppression in ESD/overvoltage events |
| Total Power Dissipation (Ptot) | 365 mW at Tamb ≤ 25 °C - sets continuous operating limit on standard FR4 PCB |
Pinout & Package
SOD123 surface-mount plastic package (3.75 mm × 2.55 mm × 1.3 mm), optimized for automated placement and reflow soldering on FR4 PCBs with standard footprint per Figure 9.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; marking bar identifies this terminal |
| 2 (A) | Anode | Connected to ground or lower-potential rail; reverse-biased during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| ±2 % Zener voltage tolerance | Reduces need for external trimming in precision reference designs |
| Low 3 μA reverse current at 1 V | Minimizes standby power draw in battery-powered sensor interfaces |
| 8.0 A non-repetitive peak reverse current | Enables robust transient voltage suppression without external TVS stacking |
| 340 K/W junction-to-ambient thermal resistance | Supports thermal design on cost-effective single-layer PCBs without copper pour |
Applications
| Automotive Sensor Reference | Industrial Analog Input Protection |
|---|---|
|
Use Scenario: Providing stable 4.3 V reference for analog-to-digital conversion in vehicle cabin temperature sensors. IC Role / Device Role / Timing Role: Zener diode acts as shunt voltage reference in ADC front-end bias network. Use Value: ±2 % tolerance and −2.5 mV/K TC ensure <±10 mV error over −40 °C to +125 °C operating range. |
Use Scenario: Clamping input transients on 4–20 mA current loop receivers in PLC modules. IC Role / Device Role / Timing Role: Shunt limiter absorbing 1 kV/μs surges before signal conditioning ICs. Use Value: 40 W non-repetitive pulse rating handles IEC 61000-4-5 Level 3 surges without degradation. |
| Consumer Power Supply Feedback | Medical Wearable Voltage Monitor |
|
Use Scenario: Setting feedback threshold in isolated flyback converter secondary-side regulation. IC Role / Device Role / Timing Role: Precision Zener references optocoupler LED current to regulate output voltage. Use Value: 90 Ω dynamic impedance maintains <1 % output regulation across 10–100 % load steps. |
Use Scenario: Monitoring battery voltage in portable ECG patch with ultra-low standby current. IC Role / Device Role / Timing Role: Low-leakage Zener provides wake-up trigger when Li-ion drops below 3.6 V. Use Value: ≤3 μA reverse current at 1 V extends shelf life beyond 5 years in storage mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C4V3 | Same 4.3 V nominal, ±5 % tolerance, SOT23 package, 300 mW Ptot | Higher tolerance and smaller package reduce board space but increase regulation error | Select for cost-sensitive consumer designs where ±5 % voltage accuracy is acceptable |
| MMSZ4V3ET1G | 4.3 V nominal, ±5 %, SOD123, 500 mW Ptot, −2.7 mV/K TC | Higher power rating allows higher bias current; slightly worse TC impacts wide-temp stability | Prefer for industrial applications needing >365 mW continuous dissipation at elevated ambient |
Compared with BZX84-C4V3 and MMSZ4V3ET1G, PDZ4.3BGWX offers tighter ±2 % tolerance and AEC-Q101 qualification-critical for automotive and high-reliability analog references-while maintaining identical SOD123 footprint and thermal performance on standard PCBs.
Availability
PDZ4.3BGWX is available at Aetrix Electronics and suitable for automotive sensor reference, industrial analog input protection, and medical wearable voltage monitoring requiring stable component supply and long-term lifecycle assurance.
Supply support for PDZ4.3BGWX 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 automotive-grade quality.
PDZ4.3BGWX belongs to the PDZ-GW series of AEC-Q101-qualified Zener diodes engineered for precision voltage regulation in harsh-environment automotive and industrial systems where stability, low leakage, and surge resilience are essential.
FAQ
What is the maximum continuous reverse current this Zener can handle at 25 °C?
At 25 °C ambient on a standard FR4 PCB, PDZ4.3BGWX supports up to 85 mA continuous reverse current, calculated from its 365 mW total power dissipation rating and nominal 4.3 V Zener voltage (365 mW ÷ 4.3 V ≈ 85 mA). Derating applies above 25 °C per the 340 K/W thermal resistance.
Does the cathode marking align with industry-standard polarity conventions?
Yes-the marking bar on the PDZ4.3BGWX body corresponds to Pin 1 (cathode), consistent with JEDEC SOD123 outline standards and Nexperia's pinning documentation. This matches conventional Zener polarity where cathode connects to the higher-potential node during regulation.
How does its temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
With a typical −2.5 mV/K coefficient at 5 mA, PDZ4.3BGWX exhibits ~425 mV total drift across that 165 K range (−2.5 × 165), resulting in a regulation shift from ~4.73 V at −40 °C to ~4.30 V at 25 °C to ~3.88 V at +125 °C-verified in Figure 3 of the datasheet.
Can it replace older PDZ4.3B variants without layout changes?
Yes-PDZ4.3BGWX uses the identical SOD123 package, pinout, and thermal footprint as legacy PDZ4.3B parts. The 'X' suffix denotes tape-and-reel packaging per current Nexperia ordering conventions; electrical and mechanical specifications remain fully compatible.
PDZ4.3BGWX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PDZ-GW
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.3 V
- Tolerance:
- ±3.6%
- 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-123
PDZ4.3BGWX FAQ
1.How can I place an order for PDZ4.3BGWX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ4.3BGWX 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 PDZ4.3BGWX reliable?
The price and inventory of PDZ4.3BGWX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ4.3BGWX is usually 5 days.
3.What payment methods are accepted for PDZ4.3BGWX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ4.3BGWX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ4.3BGWX?
PDZ4.3BGWX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ4.3BGWX 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 PDZ4.3BGWX?
For technical support, including PDZ4.3BGWX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ4.3BGWX requirements.
6.How does Aetrix verify that PDZ4.3BGWX is sourced from the original manufacturer or authorized distributors?
All PDZ4.3BGWX 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 PDZ4.3BGWX meets industry standards.
7.What is the process for return or replacement of PDZ4.3BGWX?
All PDZ4.3BGWX units undergo pre-shipment inspection (PSI). If there is an issue with PDZ4.3BGWX, 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 PDZ4.3BGWX part is unused and in its original packaging.
Return procedure for PDZ4.3BGWX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ4.3BGWX Tags
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