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Nexperia USA Inc. PDZ8.2B-QF
- Part No.:
- PDZ8.2B-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PDZ8.2B-QF.pdf
- Description:
- DIODE ZENER 8.2V 400MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:3,479
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Product details
Overview
PDZ8.2B-QF 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 (min 8.02 V, max 8.36 V at IZ = 5 mA), ±2 % tolerance, 60 Ω maximum differential resistance, and 0.5 μA maximum reverse leakage at VR = 6.6 V - used in automotive ECU power rail clamping and sensor reference stabilization.
For engineers reviewing the PDZ8.2B-QF datasheet, PDZ8.2B-QF pinout, PDZ8.2B-QF application, or PDZ8.2B-QF equivalent, this device is selected for its AEC-Q101 qualification, hard breakdown knee, low dynamic impedance at low currents (IZ = 0.5–5 mA), and SOD323 package compatibility with high-density automotive PCB layouts.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its 8.2 V nominal working voltage targets mid-range supply rail regulation where thermal coefficient stability (SZ = +4.6 mV/K at IZ = 5 mA) and low leakage (<0.5 μA) are critical for analog sensor interfaces.
The device features a hard breakdown knee and very low dynamic impedance (≤60 Ω), enabling fast transient response during overvoltage events. It is rated for 400 mW total power dissipation on FR4 PCB with standard SOD323 footprint and qualified per AEC-Q101 for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.02 V to 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 voltage shift under load current variation |
| Reverse Leakage (IR) | ≤0.5 μA at VR = 6.6 V - preserves low quiescent current in always-on automotive modules |
| Temperature Coefficient (SZ) | +4.6 mV/K at IZ = 5 mA - enables predictable, positive drift compensation in wide-temperature environments |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - supports reliable forward conduction for polarity detection or dual-use biasing |
| Power Dissipation (Ptot) | 400 mW at Tamb ≤ 25 °C on FR4 PCB - sets thermal design margin for compact SOD323 layout |
| Junction-to-Ambient Rth | 340 K/W - informs derating curve use above 25 °C ambient (e.g., 200 mW at 75 °C) |
Pinout & Package
PDZ8.2B-QF is housed in a SOD323 (SC-76) surface-mount plastic package measuring 1.8 mm × 1.35 mm × 0.95 mm, with cathode indicated by a marking bar on the top surface. The package supports reflow and wave soldering using standardized footprints per Nexperia's recommended land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes reverse-bias path for voltage reference operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock |
| Hard breakdown knee | Enables sharp, repeatable turn-on without soft saturation - critical for accurate overvoltage detection |
| Very low leakage (≤0.5 μA) | Minimizes standby power loss in battery-backed systems such as telematics and ADAS sensors |
| Low dynamic impedance (≤60 Ω) | Stabilizes reference voltage against rapid load transients in microcontroller reset circuits |
| SOD323 footprint | Supports 0.5 mm pitch pad layout and automated placement - ideal for space-constrained ECUs |
Applications
| Automotive Engine Control Unit (ECU) Power Rail Clamping | Industrial Sensor Reference Voltage Stabilization |
|---|---|
Use Scenario: Protects 8 V–9 V microcontroller supply rails from load-dump transients in 12 V automotive systems. IC Role / Device Role / Timing Role: Zener clamping element placed between VCC and GND to clamp overvoltage spikes above 8.36 V. Use Value: Prevents MCU brown-out or latch-up during ISO 7637-2 pulse 5a events due to its hard knee and 400 mW surge capability. |
Use Scenario: Provides stable 8.2 V reference for analog front-end amplifiers in pressure/temperature transducers. IC Role / Device Role / Timing Role: Precision shunt reference replacing higher-cost IC references where ±2 % tolerance suffices. Use Value: Delivers <0.5 μA leakage and +4.6 mV/K TC to maintain ADC accuracy across −40 °C to +125 °C operating range. |
| USB-C Port Overvoltage Protection | Smart Lighting Driver Feedback Regulation |
Use Scenario: Guards USB-C VBUS line against accidental 12 V adapter misconnection in portable docking stations. IC Role / Device Role / Timing Role: Fast-acting shunt limiter activated when VBUS exceeds 8.36 V, diverting excess current to ground. Use Value: Responds within nanoseconds due to low junction capacitance (150 pF @ 0 V), preventing damage to USB-PD controllers. |
Use Scenario: Sets feedback threshold for constant-current LED drivers in automotive interior lighting modules. IC Role / Device Role / Timing Role: Zener-based voltage comparator input that triggers current foldback when output exceeds 8.2 V. Use Value: Enables robust open-load detection and thermal derating via predictable Zener turn-on without external op-amps. |
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, but ±5 % tolerance and no AEC-Q101 qualification; 90 Ω rdif vs. 60 Ω | Not suitable for automotive; acceptable for consumer-grade power supervision | Select only for cost-sensitive non-automotive designs where tighter tolerance and lower impedance are not required |
| MMSZ5235B | 8.2 V nominal, ±5 % tolerance, 150 mW Ptot, SOD-123 package (larger footprint) | Limited surge handling; unsuitable for load-dump scenarios requiring 400 mW rating | Choose only when board space allows larger SOD-123 and AEC-Q101 compliance is unnecessary |
Compared with BZX84-C8V2 and MMSZ5235B, PDZ8.2B-QF offers superior automotive qualification, tighter tolerance, lower dynamic impedance, and higher power handling - making it the sole choice for AEC-compliant 8.2 V clamping in space-constrained, thermally demanding environments.
Availability
PDZ8.2B-QF is available at Aetrix Electronics and suitable for automotive ECU power management, industrial sensor reference design, and USB-C overvoltage protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for PDZ8.2B-QF 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 focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging technologies.
PDZ8.2B-QF belongs to the PDZ-B-Q series of AEC-Q101-qualified Zener diodes engineered specifically for automotive voltage regulation, sensor reference, and power rail protection - emphasizing robustness, tight tolerance, and SMD scalability.
FAQ
What is the maximum reverse current (IZSM) rating for PDZ8.2B-QF?
The non-repetitive peak reverse current is 3.5 A at tp = 100 μs and Tamb = 25 °C, as specified in Table 8 of the Nexperia datasheet. This rating supports transient suppression in ISO 7637-2 pulse 5a load-dump events when used with appropriate series impedance.
Does PDZ8.2B-QF have a marked cathode, and how is it identified?
Yes - the cathode is marked with a visible bar on the top surface of the SOD323 package, aligned with Pin 1 per Table 2 (Pinning Information). This marking matches the "K" designation and is verified in the package outline diagram (Figure 8) and soldering footprints (Figures 9–10).
Can PDZ8.2B-QF be used in place of PDZ8.2B?
Yes - the "-QF" suffix denotes AEC-Q101 qualification and enhanced process control; electrically and mechanically identical to PDZ8.2B, with identical Zener voltage, impedance, and SOD323 package dimensions. The QF variant adds automotive reliability validation without design changes.
What is the thermal resistance from junction to solder point (Rth(j-sp)) for PDZ8.2B-QF?
Rth(j-sp) is 130 K/W in free air, as stated in Table 6. This value enables accurate junction temperature estimation during short-duration surges and supports thermal derating calculations when mounted on standard FR4 PCB with tin-plated copper.
PDZ8.2B-QF 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-QF FAQ
1.How can I place an order for PDZ8.2B-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for PDZ8.2B-QF 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-QF reliable?
The price and inventory of PDZ8.2B-QF 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-QF is usually 5 days.
3.What payment methods are accepted for PDZ8.2B-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDZ8.2B-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDZ8.2B-QF?
PDZ8.2B-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDZ8.2B-QF 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-QF?
For technical support, including PDZ8.2B-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDZ8.2B-QF requirements.
6.How does Aetrix verify that PDZ8.2B-QF is sourced from the original manufacturer or authorized distributors?
All PDZ8.2B-QF 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-QF meets industry standards.
7.What is the process for return or replacement of PDZ8.2B-QF?
All PDZ8.2B-QF units undergo pre-shipment inspection (PSI). If there is an issue with PDZ8.2B-QF, 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-QF part is unused and in its original packaging.
Return procedure for PDZ8.2B-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDZ8.2B-QF Tags
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MM5Z5V1ST1G
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