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Nexperia USA Inc. PDZ8.2B-QX
- Part No.:
- PDZ8.2B-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ8.2B-QX.pdf
- Description:
- DIODE ZENER 8.2V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:8,293
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Product details
Overview
PDZ8.2B-QX from Nexperia is a single Zener diode designed for precision voltage regulation in low-power circuits, with a nominal Zener voltage of 8.2 V at 5 mA, ±2 % tolerance, 60 Ω maximum differential resistance at 5 mA, and 0.5 μA maximum reverse leakage at 6.56 V - used in automotive power supply rail clamping and reference voltage generation.
For engineers reviewing the PDZ8.2B-QX datasheet, PDZ8.2B-QX pinout, PDZ8.2B-QX application, or PDZ8.2B-QX equivalent, this device is selected for stable low-current voltage reference, ESD-robust signal conditioning, and AEC-Q101-compliant automotive subsystems requiring tight VZ accuracy and hard breakdown knee behavior.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable reference voltage across its cathode-anode terminals. Its 8.02–8.36 V working voltage range (at IZ = 5 mA) and 4.6 mV/K temperature coefficient enable predictable regulation under varying thermal conditions.
It exhibits a hard breakdown knee and very low dynamic impedance (≤60 Ω), ensuring minimal voltage deviation during load transients. Qualified per AEC-Q101, it supports operation up to +150 °C junction temperature and withstands non-repetitive surge currents up to 3.5 A (100 µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.02–8.36 V at IZ = 5 mA - defines precise clamping threshold for 8.2 V nominal rail protection |
| Differential Resistance (rdif) | ≤60 Ω at IZ = 5 mA - ensures minimal output voltage shift under small current variations |
| Reverse Leakage (IR) | ≤0.5 μA at VR = 6.56 V - guarantees negligible standby current in high-impedance bias networks |
| Power Dissipation (Ptot) | 400 mW at Tamb ≤ 25 °C - supports continuous regulation in compact SOD323 PCB layouts |
| Thermal Resistance (Rth(j-sp)) | 130 K/W junction-to-solder point - enables reliable thermal transfer to FR4 PCB copper |
| Temperature Coefficient (SZ) | +4.6 mV/K at IZ = 5 mA - provides positive, linear VZ drift for predictable compensation design |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - defines low-loss conduction path when used bidirectionally or in series |
Pinout & Package
PDZ8.2B-QX is housed in an SOD323 (SC-76) surface-mount plastic package measuring 1.8 × 1.35 × 0.95 mm, with gull-wing leads and cathode indicated by a marking bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; reverse-bias terminal where Zener breakdown occurs |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q101 qualified - validated for under-hood and body-control module deployment |
| Low dynamic impedance | ≤60 Ω at 5 mA - maintains voltage stability during microamp-level load shifts in sensor references |
| Hard breakdown knee | Sharp, non-gradual transition into conduction - eliminates ambiguity in turn-on threshold for protection circuits |
| Tight voltage tolerance | ±2 % at IZ = 5 mA - reduces need for post-production trimming in precision analog subsystems |
| Low leakage current | ≤0.5 μA at 80 % VZ - preserves battery life in always-on automotive modules |
Applications
| Automotive Power Rail Clamping | Microcontroller Reference Voltage |
|---|---|
|
Use Scenario: Protecting 8 V auxiliary power rails in vehicle infotainment ECUs against load-dump transients and back-EMF spikes. IC Role / Device Role / Timing Role: Zener clamp placed between rail and ground to shunt excess energy above 8.2 V threshold. Use Value: Prevents overvoltage damage to downstream LDOs and MCU I/O pins without requiring active circuitry. |
Use Scenario: Providing a stable 8.2 V reference for ADC calibration and internal bandgap comparison in engine control units. IC Role / Device Role / Timing Role: Passive voltage reference source feeding precision resistor dividers and comparator inputs. Use Value: Enables <1 LSB ADC error over −40 °C to +125 °C due to predictable +4.6 mV/K drift and low rdif. |
| Industrial Sensor Signal Conditioning | USB-C Port Overvoltage Protection |
|
Use Scenario: Biasing and limiting input stages of 4–20 mA loop-powered pressure sensors operating from 12 V supplies. IC Role / Device Role / Timing Role: Reverse-biased Zener at sensor front-end to clip transient-induced excursions before op-amp inputs. Use Value: Maintains signal integrity during ESD events (IEC 61000-4-2 Level 4) while adding <0.1 mm² PCB area. |
Use Scenario: Secondary overvoltage clamp on USB-C VBUS lines in portable docking stations supporting 20 V PD profiles. IC Role / Device Role / Timing Role: Fast-reacting Zener placed after primary TVS to absorb residual overshoot beyond 8.2 V. Use Value: Complements 15 kV TVS with sub-100 ns response and <0.5 μA leakage to avoid standby current penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C8V2 | Same 8.2 V nominal, ±5 % tolerance, 80 Ω rdif, not AEC-Q101 qualified | Limited to commercial-grade consumer electronics; unsuitable for automotive under-hood use | Select when cost sensitivity outweighs automotive reliability requirements and tighter VZ tolerance is not needed |
| MMSZ5235B | 8.2 V nominal, ±5 % tolerance, 30 Ω rdif, 100 nA leakage at 6.5 V, SOD-123 package | Lower leakage improves battery-powered IoT sensor lifetime but larger footprint increases layout area | Prefer for ultra-low-power wearable designs where 100 nA leakage justifies 0.5 mm longer package |
Compared with BZX84-C8V2 and MMSZ5235B, PDZ8.2B-QX delivers superior automotive qualification, tighter ±2 % VZ tolerance, and optimized thermal resistance for high-density SOD323 layouts - making it the preferred choice for AEC-Q101-compliant systems demanding precision and robustness.
Availability
PDZ8.2B-QX is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, USB-C protection circuits, and precision analog reference designs requiring stable component supply and full traceability.
Supply support for PDZ8.2B-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-performance, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
PDZ8.2B-QX belongs to the PDZ-B-Q series of AEC-Q101-qualified Zener diodes engineered specifically for automotive voltage regulation, ESD-tolerant signal conditioning, and space-constrained power rail protection.
FAQ
What is the maximum continuous reverse current this Zener can handle at 8.2 V?
The PDZ8.2B-QX is rated for continuous Zener current up to 50 mA (derived from Ptot = 400 mW ÷ VZ ≈ 48.8 mA). Its absolute maximum non-repetitive peak reverse current is 3.5 A for 100 µs pulses, but sustained operation must remain within derated power limits per the FR4 PCB curve in Figure 1.
Does the ±2 % tolerance apply across temperature or only at 25 °C?
The ±2 % tolerance is specified at Tj = 25 °C and IZ = 5 mA. Total variation over −40 °C to +150 °C includes both initial tolerance and temperature coefficient effects: with +4.6 mV/K drift, VZ shifts ~0.46 V over 100 K, resulting in total span of approximately ±2.8 % across full automotive temperature range.
Can this Zener be used in forward-biased mode as a standard diode?
Yes - its forward voltage is 0.9 V at 10 mA and 1.1 V at 100 mA, matching typical silicon diode behavior. It is routinely used in dual-role configurations: reverse-biased for regulation and forward-biased as a level-shifter or polarity protector, leveraging its low VF and hard knee characteristics in both directions.
How does the SOD323 package affect thermal performance in high-density PCBs?
With Rth(j-sp) = 130 K/W and Rth(j-a) = 340 K/W on standard FR4, the SOD323 enables efficient heat transfer to solder joints but requires careful copper pour design. Adding 20 mm² of 1 oz copper connected to both pads reduces effective Rth(j-a) by ~40 %, critical for sustained 300 mW operation in multi-layer automotive boards.
PDZ8.2B-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):
- 8.2 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 5 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
PDZ8.2B-QX FAQ
1.How can I place an order for PDZ8.2B-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ8.2B-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 PDZ8.2B-QX reliable?
The price and inventory of PDZ8.2B-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDZ8.2B-QX is usually 5 days.
3.What payment methods are accepted for PDZ8.2B-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ8.2B-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ8.2B-QX?
PDZ8.2B-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ8.2B-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 PDZ8.2B-QX?
For technical support, including PDZ8.2B-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ8.2B-QX requirements.
6.How does Aetrix verify that PDZ8.2B-QX is sourced from the original manufacturer or authorized distributors?
All PDZ8.2B-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 PDZ8.2B-QX meets industry standards.
7.What is the process for return or replacement of PDZ8.2B-QX?
All PDZ8.2B-QX units undergo pre-shipment inspection (PSI). If there is an issue with PDZ8.2B-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 PDZ8.2B-QX part is unused and in its original packaging.
Return procedure for PDZ8.2B-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ8.2B-QX Tags
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