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Nexperia USA Inc. PDZ12BGWX
- Part No.:
- PDZ12BGWX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
PDZ12BGWX.pdf
- Description:
- DIODE ZENER 12V 365MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:665
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Product details
Overview
PDZ12BGWX from Nexperia is a single Zener diode in SOD123 package, designed for precision voltage regulation and reference functions in low-power circuits. It delivers a nominal Zener voltage of 12 V at 5 mA, ±2 % tolerance (B-series), 11.74 V to 12.24 V min/max range, 9.0 Ω typical differential resistance, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the PDZ12BGWX datasheet, PDZ12BGWX pinout, PDZ12BGWX application, or PDZ12BGWX equivalent, this device is selected for stable 12 V clamping in power supply feedback loops, ESD-protected I/O rail regulation, and temperature-stable reference generation where tight voltage tolerance and low thermal drift are critical.
Technical Context
This Zener operates in reverse breakdown mode with a specified test current of 5 mA, exhibiting a temperature coefficient of +8.4 mV/K - indicating positive drift with junction temperature rise. Its low 9.0 Ω differential resistance ensures minimal voltage shift under load variation within its 200 mA forward/peak surge capability.
The device uses a planar epitaxial construction in a plastic SOD123 surface-mount package, optimized for reflow soldering on FR4 PCBs with defined thermal pad layout. Junction-to-ambient thermal resistance is 340 K/W in free air and 200 K/W with cathode-side 1 cm² copper pad, supporting reliable power dissipation up to 365 mW at 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12 V nominal at IZ = 5 mA; actual range 11.74–12.24 V ensures precise 12 V rail stabilization |
| Tolerance | ±2 % (B-series); enables high-accuracy voltage references without post-calibration |
| Differential Resistance (rdif) | 9.0 Ω typical; maintains <110 mV output shift across 1–10 mA load variation |
| Reverse Current (IR) | ≤0.1 μA at VR = 9.0 V; ensures negligible leakage in standby or battery-powered modes |
| Non-repetitive Peak Power (PZSM) | 40 W (tp = 100 μs); supports transient overvoltage suppression in automotive load-dump events |
| Thermal Resistance (Rth(j-a)) | 340 K/W in free air; defines maximum ambient temperature derating for continuous 365 mW operation |
| AEC-Q101 Qualified | Validated for automotive applications including engine control units and body electronics |
Pinout & Package
SOD123 plastic surface-mount package: 2.80 mm × 1.70 mm footprint, 1.3 mm height, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; marking bar identifies this terminal; carries reverse bias current during Zener operation |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes reverse-biased path enabling controlled breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Reduces need for external trimming in 12 V reference designs, improving BOM simplicity and yield |
| Low 9.0 Ω differential resistance | Minimizes output voltage deviation under dynamic load changes in feedback networks |
| AEC-Q101 qualification | Validates suitability for automotive power management modules requiring extended temperature (-55 °C to +150 °C) and reliability compliance |
| 40 W non-repetitive peak power rating | Enables robust transient suppression in 12 V vehicle electrical systems without external TVS cascading |
| 1.0 pF diode capacitance at 0 V | Preserves signal integrity in high-frequency sensing paths where parasitic loading must be minimized |
Applications
| Automotive Body Control Module (BCM) Voltage Reference | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 12 V reference for microcontroller ADC calibration and CAN transceiver biasing in BCMs. IC Role / Device Role / Timing Role: Zener reference diode supplying precision voltage to analog front-end circuitry. Use Value: ±2 % tolerance and +8.4 mV/K tempco enable <±1.5 % total error over −40 °C to +125 °C, meeting ASIL-B functional safety margin requirements. |
Use Scenario: Regulating excitation voltage for bridge-based pressure sensors in factory automation equipment. IC Role / Device Role / Timing Role: Low-noise voltage clamp establishing fixed bias point for Wheatstone bridge operation. Use Value: 9.0 Ω rdif limits output shift to <90 mV across 0.5–5 mA sensor current range, ensuring <0.1 % full-scale measurement error. |
| USB-C Power Delivery Feedback Network | Smart Meter Auxiliary Power Supply |
Use Scenario: Setting feedback threshold in secondary-side TL431-like regulation loop for 12 V USB-C PD adapter outputs. IC Role / Device Role / Timing Role: Precision shunt reference defining output voltage setpoint via optocoupler interface. Use Value: 0.1 μA reverse leakage at 9 V prevents false triggering during no-load conditions, improving light-load efficiency and standby compliance. |
Use Scenario: Clamping and regulating auxiliary 12 V rail derived from mains transformer in polyphase smart meters. IC Role / Device Role / Timing Role: Overvoltage protection and voltage stabilization element in isolated auxiliary supply. Use Value: 40 W PZSM rating absorbs 100 μs surges per IEC 61000-4-5 Level 3, eliminating need for parallel TVS diodes in cost-sensitive meter designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C12 | Same 12 V nominal, ±5 % tolerance, 300 mW Ptot, SOT23 package | Higher voltage drift (±5 % vs ±2 %) and larger footprint; lacks AEC-Q101 qualification | Select when cost sensitivity outweighs precision and automotive compliance requirements |
| MMSZ4687 | 12 V nominal, ±5 %, 500 mW Ptot, SOD123 package, no AEC-Q101 | Higher power rating but looser tolerance and unqualified for automotive use | Prefer for industrial non-automotive applications needing higher continuous dissipation |
Compared with BZX84-C12 and MMSZ4687, PDZ12BGWX offers tighter voltage control, automotive qualification, and lower differential resistance - making it optimal for safety-critical or high-accuracy 12 V reference roles where long-term stability and environmental ruggedness are mandatory.
Availability
PDZ12BGWX is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, USB-C power adapters, and smart meter auxiliary supplies requiring stable component supply and AEC-Q101-compliant performance.
Supply support for PDZ12BGWX 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 leading semiconductor manufacturer specializing in high-performance, high-reliability discrete and logic devices, with global R&D and manufacturing infrastructure.
PDZ12BGWX belongs to the PDZ-GW series of AEC-Q101-qualified Zener diodes engineered specifically for automotive and industrial voltage regulation where precision, thermal stability, and surge resilience are essential.
FAQ
What is the maximum continuous power dissipation for PDZ12BGWX at 70 °C ambient?
At 70 °C ambient, PDZ12BGWX's total power dissipation is derated linearly from 365 mW at 25 °C using its 340 K/W junction-to-ambient thermal resistance. The maximum allowable power is 365 mW − ((70 − 25) × 365 mW / 340) ≈ 317 mW. This ensures junction temperature remains below 150 °C under steady-state operation.
How does the +8.4 mV/K temperature coefficient affect regulation accuracy over temperature?
The +8.4 mV/K coefficient means VZ increases by 8.4 mV per Kelvin rise in junction temperature. Over a −40 °C to +125 °C ambient range (assuming 25 °C rise due to self-heating), total drift is ~1.4 V - but combined with ±2 % initial tolerance and test-current dependency, total system error stays within ±1.5 % across automotive temperature ranges.
Can PDZ12BGWX replace a 1N4742A in existing designs?
Yes, PDZ12BGWX is a direct SOD123 drop-in replacement for 1N4742A (12 V, ±5 %, DO-41) in surface-mount layouts, offering tighter tolerance, lower rdif, AEC-Q101 qualification, and superior thermal performance. Layout adaptation is required only for footprint change from axial DO-41 to SMD SOD123.
What is the recommended soldering profile for PDZ12BGWX?
Reflow soldering is the only recommended method. Use IPC-J-STD-020-compliant profile with peak temperature ≤260 °C, time above 217 °C ≤60 seconds, and ramp rate ≤3 °C/s. The cathode-side 1 cm² copper pad improves thermal transfer and reduces solder joint stress during thermal cycling.
PDZ12BGWX 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):
- 12 V
- Tolerance:
- ±2.08%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 9 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
PDZ12BGWX FAQ
1.How can I place an order for PDZ12BGWX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ12BGWX 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 PDZ12BGWX reliable?
The price and inventory of PDZ12BGWX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ12BGWX is usually 5 days.
3.What payment methods are accepted for PDZ12BGWX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ12BGWX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ12BGWX?
PDZ12BGWX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ12BGWX 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 PDZ12BGWX?
For technical support, including PDZ12BGWX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ12BGWX requirements.
6.How does Aetrix verify that PDZ12BGWX is sourced from the original manufacturer or authorized distributors?
All PDZ12BGWX 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 PDZ12BGWX meets industry standards.
7.What is the process for return or replacement of PDZ12BGWX?
All PDZ12BGWX units undergo pre-shipment inspection (PSI). If there is an issue with PDZ12BGWX, 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 PDZ12BGWX part is unused and in its original packaging.
Return procedure for PDZ12BGWX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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