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Nexperia USA Inc. PDZ16B-QX
- Part No.:
- PDZ16B-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ16B-QX.pdf
- Description:
- DIODE ZENER 16V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,586
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Product details
Overview
PDZ16B-QX from Nexperia is a single silicon Zener diode designed for low-power voltage regulation in automotive and industrial circuits, with a nominal Zener voltage of 16.2 V (min 15.85 V, max 16.51 V) at IZ = 5 mA, ±2 % tolerance, 80 Ω maximum differential resistance, and qualified to AEC-Q101.
For engineers reviewing the PDZ16B-QX datasheet, PDZ16B-QX pinout, PDZ16B-QX application, or PDZ16B-QX equivalent, this device serves as a compact, surface-mount voltage reference in power supply feedback paths, overvoltage clamping, and precision biasing where thermal stability and low leakage (<0.05 µA at VR = 12 V) are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with hard knee characteristics and low dynamic impedance-critical for stable regulation under varying load currents. Its temperature coefficient of +12.4 mV/K at IZ = 5 mA enables predictable drift compensation in reference designs.
Designed for SOD323 (SC-76) mounting, it delivers 400 mW total power dissipation at Tamb ≤ 25 °C on FR4 PCB, with thermal resistance Rth(j-a) = 340 K/W and Rth(j-sp) = 130 K/W, supporting reliable operation up to Tj = +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 15.85 V to 16.51 V at IZ = 5 mA - defines precise regulation point for feedback loops |
| Differential Resistance rdif | ≤ 80 Ω at IZ = 5 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage IR | ≤ 0.05 µA at VR = 12 V - reduces quiescent current loss in battery-powered systems |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA - enables use as polarity protection or clamp in forward conduction |
| Power Dissipation Ptot | 400 mW at Tamb = 25 °C - sets maximum continuous steady-state power handling on standard PCB |
| Temperature Coefficient SZ | +12.4 mV/K at IZ = 5 mA - quantifies voltage drift per degree, enabling thermal error budgeting |
| Junction Temperature Tj | −65 °C to +150 °C - supports operation in under-hood automotive environments |
Pinout & Package
PDZ16B-QX is housed in a SOD323 (SC-76) plastic surface-mount package measuring 1.8 mm × 1.35 mm × 0.95 mm, with cathode indicated by a marking bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| Low dynamic impedance | 80 Ω max at 5 mA enables tight voltage regulation across load variations |
| Hard breakdown knee | Sharp transition into conduction improves accuracy in precision reference circuits |
| Ultra-low leakage current | 0.05 µA max at 12 V reverse bias minimizes standby power loss |
| SOD323 footprint compatibility | Standardized 0.6 mm pitch pad layout supports automated reflow assembly |
Applications
| Automotive ECU Power Monitoring | Industrial Sensor Bias Reference |
|---|---|
Use Scenario: Monitoring 12 V battery rail in engine control modules with microcontroller ADC input. IC Role / Device Role / Timing Role: Zener voltage reference providing stable 16.2 V clamp for overvoltage detection circuitry. Use Value: Enables accurate fault threshold setting with <±2 % tolerance and +12.4 mV/K thermal drift compensated in firmware. |
Use Scenario: Supplying bias voltage to analog front-end of pressure sensor in factory automation PLCs. IC Role / Device Role / Timing Role: Low-leakage (≤0.05 µA) Zener shunt regulator stabilizing sensor excitation voltage. Use Value: Maintains sensor linearity by minimizing current draw-induced errors in high-impedance bias networks. |
| USB-C Port Overvoltage Protection | Programmable Logic Controller Input Conditioning |
Use Scenario: Clamping transient surges on USB-C VBUS lines during hot-plug events. IC Role / Device Role / Timing Role: Fast-response Zener diode absorbing >1.5 A non-repetitive surge (tp = 100 µs). Use Value: Limits peak voltage to ≤16.51 V without degradation, preserving downstream USB-PD controller ICs. |
Use Scenario: Level-shifting and protecting 24 V digital inputs against field-wiring transients. IC Role / Device Role / Timing Role: Shunt regulator establishing fixed 16.2 V reference for optocoupler input threshold detection. Use Value: Ensures consistent logic-high recognition across temperature (−40 °C to +125 °C) with AEC-Q101 reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C16 | Same 16 V nominal Zener, but ±5 % tolerance and higher rdif (100 Ω), no AEC-Q101 qualification | Limited to commercial-grade consumer products; unsuitable for automotive safety-critical monitoring | Select when cost sensitivity outweighs thermal stability and automotive compliance requirements |
| MMSZ4687 | 16 V nominal, ±5 % tolerance, 100 Ω rdif, rated for 500 mW but only 350 mW on FR4; not AEC-Q101 qualified | Higher power rating but inferior thermal performance (Rth(j-a) = 400 K/W) and unqualified for automotive use | Prefer only for non-automotive industrial applications requiring marginally higher Ptot at ambient ≤ 40 °C |
Compared with BZX84-C16 and MMSZ4687, PDZ16B-QX provides tighter voltage tolerance (±2 % vs ±5 %), lower dynamic impedance (80 Ω vs ≥100 Ω), and guaranteed AEC-Q101 qualification-making it the sole choice for automotive-compliant voltage reference and clamping where long-term parametric stability matters.
Availability
PDZ16B-QX is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor signal conditioning, and USB-C overvoltage protection requiring stable component supply with full traceability and lifecycle support.
Supply support for PDZ16B-QX 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 specializing in high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.
PDZ16B-QX belongs to the PDZ-B-Q series-a family of AEC-Q101-qualified Zener diodes engineered specifically for robust voltage regulation in harsh automotive and industrial environments.
FAQ
What is the maximum reverse current PDZ16B-QX can handle in surge conditions?
PDZ16B-QX supports a non-repetitive peak reverse current (IZSM) of 1.5 A at tp = 100 µs and Tamb = 25 °C, as specified in Table 8 of the datasheet. This capability enables effective transient suppression in automotive load-dump scenarios without permanent degradation.
How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
With a typical temperature coefficient of +12.4 mV/K at IZ = 5 mA, PDZ16B-QX exhibits ~1.24 V total drift across a 100 K range. This is factored into reference designs using compensation resistors or firmware correction-especially critical in engine bay temperature monitoring circuits.
Can PDZ16B-QX be used in forward conduction mode for polarity protection?
Yes: its forward voltage is ≤0.9 V at 10 mA and ≤1.1 V at 100 mA (Table 7), making it viable for low-drop rectification or reverse-polarity blocking in low-current auxiliary rails-though its primary design intent remains reverse-bias Zener regulation.
Is the SOD323 package compatible with standard reflow soldering profiles?
Yes: Nexperia specifies compatibility with JEDEC J-STD-020D reflow profiles. The recommended footprint (Figure 9) uses 0.6 mm × 0.5 mm solder pads with 0.6 mm spacing, supporting peak temperatures up to 260 °C for ≤30 seconds without delamination or parametric shift.
PDZ16B-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PDZ-B-Q
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 16 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 12 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-323
PDZ16B-QX FAQ
1.How can I place an order for PDZ16B-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ16B-QX 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 PDZ16B-QX reliable?
The price and inventory of PDZ16B-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ16B-QX is usually 5 days.
3.What payment methods are accepted for PDZ16B-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ16B-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ16B-QX?
PDZ16B-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ16B-QX 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 PDZ16B-QX?
For technical support, including PDZ16B-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ16B-QX requirements.
6.How does Aetrix verify that PDZ16B-QX is sourced from the original manufacturer or authorized distributors?
All PDZ16B-QX 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 PDZ16B-QX meets industry standards.
7.What is the process for return or replacement of PDZ16B-QX?
All PDZ16B-QX units undergo pre-shipment inspection (PSI). If there is an issue with PDZ16B-QX, 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 PDZ16B-QX part is unused and in its original packaging.
Return procedure for PDZ16B-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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