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Nexperia USA Inc. PDZ18BGWJ
- Part No.:
- PDZ18BGWJ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
PDZ18BGWJ.pdf
- Description:
- DIODE ZENER 18V 365MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:8,877
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Product details
Overview
PDZ18BGWJ from Nexperia is a single Zener diode in SOD123 package, designed for precision voltage regulation and reference functions at nominal 18 V (IZ = 5 mA), with ±2 % tolerance (B-series), 80 Ω max differential resistance, and AEC-Q101 qualification for automotive use.
For engineers reviewing the PDZ18BGWJ datasheet, PDZ18BGWJ pinout, PDZ18BGWJ application, or PDZ18BGWJ equivalent, this device is selected for stable low-power voltage clamping, ESD-protected biasing, and temperature-compensated reference circuits where tight Zener voltage accuracy and automotive-grade reliability are required.
Technical Context
This Zener operates in reverse breakdown mode with a nominal working voltage of 17.56 V to 18.35 V at 5 mA test current, exhibiting a temperature coefficient of +14.4 mV/K - indicating positive thermal drift optimized for mid-range voltage references. Its low reverse current (≤0.05 μA at VR = 15 V) supports high-impedance sensing nodes.
The device delivers non-repetitive peak reverse power dissipation up to 40 W (tp = 100 μs), while maintaining 365 mW total power dissipation on standard FR4 PCB with tin-plated copper, and features a cathode-marked SOD123 outline compatible with automated SMT reflow processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 17.56 V to 18.35 V at IZ = 5 mA - defines precise clamping threshold for 18 V rail protection |
| Tolerance | ±2 % (B-series) - enables accurate voltage referencing without post-production trimming |
| Differential Resistance rdif | ≤80 Ω - ensures minimal voltage shift under load variation in feedback networks |
| Reverse Current IR | ≤0.05 μA at VR = 15 V - preserves signal integrity in high-impedance bias/reference paths |
| Thermal Resistance Rth(j-a) | 340 K/W - determines junction temperature rise under continuous 365 mW dissipation in free air |
| Non-repetitive Peak Current IZSM | 1.5 A (tp = 100 μs) - supports transient overvoltage suppression in automotive load-dump events |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress-test requirements including HTGB, HTRB, and TCT |
Pinout & Package
SOD123 surface-mount plastic 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 for correct PCB orientation |
| 2 (A) | Anode | Connected to ground or lower-potential reference; reverse-biased configuration enables Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Reduces need for external calibration in voltage reference designs across temperature and production lots |
| AEC-Q101 qualification | Validates suitability for automotive body control modules, sensor interfaces, and infotainment power rails |
| Low 0.05 μA reverse leakage at 15 V | Minimizes quiescent current draw in battery-powered systems and high-impedance analog front-ends |
| 1.5 A non-repetitive surge capability | Withstands ISO 7637-2 pulse 1/2a/5a transients without degradation in automotive 12 V systems |
| 340 K/W junction-to-ambient thermal resistance | Enables thermal design margin estimation for ambient temperatures up to +105 °C in enclosed enclosures |
Applications
| Automotive Sensor Biasing | Industrial Power Rail Clamping |
|---|---|
Use Scenario: Providing stable 18 V bias to Hall-effect position sensors in engine control units. IC Role / Device Role / Timing Role: Zener reference element establishing fixed reverse-bias voltage for sensor excitation circuitry. Use Value: ±2 % tolerance and AEC-Q101 qualification ensure consistent sensor output accuracy across −40 °C to +125 °C operating range. |
Use Scenario: Clamping 24 V industrial PLC I/O module supply against transient overvoltages. IC Role / Device Role / Timing Role: Standby shunt regulator absorbing short-duration surges exceeding 24 V rail rating. Use Value: 1.5 A non-repetitive peak current and 40 W surge power rating suppress ISO 16750-2 pulses without failure. |
| Portable Medical Device Reference | Telecom Line Interface Protection |
Use Scenario: Generating precision 18 V reference for ADC voltage scaling in handheld diagnostic equipment. IC Role / Device Role / Timing Role: Low-leakage Zener diode supplying stable reference voltage to SAR ADC reference input. Use Value: ≤0.05 μA reverse current prevents loading of high-impedance reference divider networks, preserving measurement linearity. |
Use Scenario: Protecting RS-485 transceiver VCC pins from induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: Fast-response shunt clamp limiting voltage excursion during sub-microsecond transients. Use Value: 80 Ω differential resistance ensures <100 mV deviation from nominal VZ under 10 mA transient current, maintaining transceiver logic thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C18 | Same 18 V nominal, ±5 % tolerance, SOT23 package, 300 mW Ptot, no AEC-Q101 qualification | Limited to commercial-grade consumer electronics; unsuitable for automotive or extended-temperature industrial use | Select when cost sensitivity outweighs automotive compliance and tighter tolerance requirements |
| MMSZ5246B | 18 V nominal, ±5 % tolerance, SOD123 package, 500 mW Ptot, no AEC-Q101, higher IR (≤10 μA at VR = 15 V) | Higher leakage limits use in ultra-low-power battery systems; lacks automotive qualification | Choose only for non-automotive applications requiring higher continuous power dissipation |
Compared with BZX84-C18 and MMSZ5246B, PDZ18BGWJ offers superior voltage accuracy (±2 % vs. ±5 %), automotive qualification, and lower leakage - making it the preferred choice for safety-critical or thermally constrained 18 V reference designs.
Availability
PDZ18BGWJ is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial power rail clamping, portable medical device reference, and telecom line interface protection requiring stable component supply and AEC-Q101 assurance.
Supply support for PDZ18BGWJ 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 Dutch semiconductor manufacturer specializing in high-performance, reliable discrete and logic devices, with global manufacturing and R&D centers.
PDZ18BGWJ belongs to the PDZ-GW series of AEC-Q101-qualified Zener diodes engineered specifically for automotive and industrial voltage regulation where precision, surge robustness, and long-term stability are critical.
FAQ
What is the maximum continuous reverse current PDZ18BGWJ can sustain at 25 °C?
The PDZ18BGWJ has a total power dissipation limit of 365 mW at Tamb ≤ 25 °C. At its nominal Zener voltage of ~18 V, this corresponds to a maximum continuous reverse current of approximately 20.3 mA (365 mW ÷ 18 V). Exceeding this current risks thermal runaway unless board-level thermal management improves heat dissipation.
How does the +14.4 mV/K temperature coefficient affect circuit performance?
The +14.4 mV/K coefficient means VZ increases by ~14.4 mV per degree Celsius rise in junction temperature. In a 50 °C ambient-to-junction rise, VZ shifts +0.72 V - critical for precision references. Designers must either operate within narrow temperature bands or compensate using complementary components like NTC thermistors or matched transistor pairs.
Is PDZ18BGWJ suitable for bidirectional ESD protection?
No - PDZ18BGWJ is a unidirectional Zener diode configured for reverse-bias operation only. It provides no forward conduction path beyond typical diode drop (~0.9 V at 10 mA) and lacks symmetric clamping behavior. For bidirectional ESD protection, purpose-built TVS diodes such as PESD5V0S1BA should be used instead.
Can PDZ18BGWJ replace PDZ18B in existing SOD123 footprints?
Yes - PDZ18BGWJ is a direct replacement for PDZ18B in SOD123 layouts. Both share identical package dimensions, pinout (cathode-bar marked), thermal footprint, and soldering profile requirements. The 'J' suffix denotes tape-and-reel packaging per JEDEC standards but does not alter electrical or mechanical characteristics.
PDZ18BGWJ 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):
- 18 V
- Tolerance:
- ±2.19%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 13 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
PDZ18BGWJ FAQ
1.How can I place an order for PDZ18BGWJ through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ18BGWJ 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 PDZ18BGWJ reliable?
The price and inventory of PDZ18BGWJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ18BGWJ is usually 5 days.
3.What payment methods are accepted for PDZ18BGWJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ18BGWJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ18BGWJ?
PDZ18BGWJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ18BGWJ 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 PDZ18BGWJ?
For technical support, including PDZ18BGWJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ18BGWJ requirements.
6.How does Aetrix verify that PDZ18BGWJ is sourced from the original manufacturer or authorized distributors?
All PDZ18BGWJ 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 PDZ18BGWJ meets industry standards.
7.What is the process for return or replacement of PDZ18BGWJ?
All PDZ18BGWJ units undergo pre-shipment inspection (PSI). If there is an issue with PDZ18BGWJ, 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 PDZ18BGWJ part is unused and in its original packaging.
Return procedure for PDZ18BGWJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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