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Nexperia USA Inc. BZX84W-C8V2-QF
- Part No.:
- BZX84W-C8V2-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
BZX84W-C8V2-QF.pdf
- Description:
- DIODE ZENER 8.2V 275MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:4,043
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Product details
Overview
BZX84W-C8V2-QF from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOT323 (SC-70) package, rated for 8.2 V nominal Zener voltage at 5 mA, 275 mW total power dissipation, and qualified to AEC-Q101 for automotive use. It provides stable voltage reference in low-power regulation circuits, ESD protection clamping, and biasing networks where compact size and thermal reliability are critical.
For engineers reviewing the BZX84W-C8V2-QF datasheet, BZX84W-C8V2-QF pinout, BZX84W-C8V2-QF application, or BZX84W-C8V2-QF equivalent, this page delivers verified Zener parameters, automotive-grade qualification status, SOT323 terminal mapping, reverse leakage at 5 V (700 nA), and differential resistance (80 Ω at 5 mA) - all essential for precision voltage reference selection and board-level surge suppression design.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal 8.2 V regulation voltage at IZ = 5 mA, exhibiting a positive temperature coefficient of +4.6 mV/K under that condition. Its differential resistance is 80 Ω at 5 mA, enabling stable regulation across moderate current variations in feedback or reference paths.
The device features a non-connected (n.c.) terminal (Pin 2), reducing parasitic capacitance and simplifying PCB layout in high-frequency applications. Thermal resistance from junction to ambient is 455 K/W on standard FR4, supporting operation up to 150 °C junction temperature under defined mounting conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V nominal at IZ = 5 mA; defines precise DC reference point for regulation or clamping circuits |
| Tolerance | ±5 % (C-series); ensures predictable voltage deviation across production lots for cost-sensitive automotive designs |
| Reverse Leakage (IR) | 700 nA at VR = 5 V; enables ultra-low standby current in battery-backed or energy-harvesting systems |
| Differential Resistance (rdif) | 80 Ω at IZ = 5 mA; determines regulation stiffness and output impedance in shunt reference configurations |
| Total Power Dissipation (Ptot) | 275 mW at Tamb = 25 °C on FR4; sets maximum continuous power handling without heatsinking |
| Junction Temperature (Tj) | 150 °C maximum; supports operation in under-hood automotive environments and industrial control enclosures |
| AEC-Q101 Qualified | Yes; validated for automotive discrete semiconductor stress testing including HTGB, HTRB, and temperature cycling |
Pinout & Package
Package: SOT323 (SC-70), leadless surface-mount plastic package with 3 terminals; footprint dimensions per Figure 9 (reflow) and Figure 10 (wave soldering) in datasheet Rev. 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in Zener regulation configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; electrically isolated to minimize stray capacitance and simplify routing |
| 3 | Cathode (K) | Reverse-biased terminal; connects to higher-potential node and serves as regulated output reference point |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q101 compliant; certified for use in engine control units, body electronics, and ADAS sensor interfaces |
| Low reverse leakage | 700 nA @ 5 V enables microamp-level standby current in always-on voltage monitors and wake-up circuits |
| Stable temperature coefficient | +4.6 mV/K at 5 mA allows predictable drift compensation in temperature-critical reference designs |
| High-frequency suitability | Diode capacitance ≤ 4 pF at 1 MHz and 0 V bias supports noise filtering and RF decoupling above 100 MHz |
| Compact SMT footprint | SOT323 package (2.2 × 1.35 mm) saves board space in dense automotive ECUs and portable industrial sensors |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Voltage reference for analog-to-digital conversion of door lock actuator current feedback. IC Role / Device Role / Timing Role: Zener diode provides stable 8.2 V reference to op-amp comparator input, rejecting supply ripple during load transients. Use Value: ±5 % tolerance and AEC-Q101 qualification ensure long-term accuracy and reliability over vehicle lifetime (15+ years, −40 °C to +125 °C). |
Use Scenario: Clamping element in 4–20 mA loop transmitter front-end protecting ADC input against ESD and overvoltage. IC Role / Device Role / Timing Role: Acts as bidirectional transient suppressor-forward-conducting below 0.9 V, reverse-clamping above 8.2 V. Use Value: 700 nA leakage at 5 V prevents loading of high-impedance sensor bridges; 275 mW rating handles 100 µs surges per IEC 61000-4-2 Level 4. |
| USB-C Power Delivery Monitor | Smart Meter Reference Subsystem |
|
Use Scenario: Precision voltage reference for MCU-based VBUS monitoring in USB-C PD sink controllers. IC Role / Device Role / Timing Role: Shunt regulator establishes known 8.2 V rail for resistive divider scaling of 0–20 V VBUS range into 0–3.3 V ADC input. Use Value: 80 Ω differential resistance minimizes reference error due to divider current variation; SOT323 enables placement near ADC input pins. |
Use Scenario: Secondary reference source in polyphase electricity meter ICs for calibration offset correction. IC Role / Device Role / Timing Role: Provides backup reference when primary bandgap fails; connected to metrology ADC's internal reference multiplexer. Use Value: +4.6 mV/K TC matches typical meter SoC drift profile, reducing software compensation complexity; AEC-Q101 grade ensures field longevity in outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84W-B8V2-Q | ±2 % tolerance (vs. ±5 %); tighter VZ spread but higher unit cost and reduced availability in high-volume automotive programs | Preferred for metrology-grade references requiring < ±0.2 V absolute error; less suitable for cost-driven body electronics | Select when system-level calibration budget demands sub-10 mV reference uncertainty at 25 °C |
| MMSZ5236B-TP | Same 8.2 V nominal, ±5 %, but in SOD-123 package; 500 mW Ptot, higher thermal resistance (350 K/W), no AEC-Q101 qualification | Acceptable for consumer-grade power supplies; unsuitable for automotive or industrial environments requiring extended temperature operation | Choose only for non-automotive applications where board space is less constrained and qualification is not required |
Compared with BZX84W-C8V2-QF, the BZX84W-B8V2-Q offers tighter regulation at higher cost and lower volume flexibility, while MMSZ5236B-TP trades automotive reliability and miniaturization for higher power handling in non-qualified contexts.
Availability
BZX84W-C8V2-QF is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor signal conditioning, USB-C power delivery monitoring, and smart meter reference subsystems requiring stable component supply with full traceability and lifecycle continuity.
Supply support for BZX84W-C8V2-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 logic, discrete, and MOSFET solutions, with leadership in automotive-qualified components.
The BZX84W-Q series belongs to Nexperia's automotive Zener diode product line, engineered specifically for robust voltage regulation and clamping in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage before breakdown for BZX84W-C8V2-QF?
The nominal Zener voltage is 8.2 V at 5 mA test current, with a guaranteed minimum of 7.7 V and maximum of 8.7 V per ±5 % tolerance. Breakdown occurs gradually above ~7.5 V; the device is specified to regulate stably between 7.7 V and 8.7 V under recommended operating conditions.
Can BZX84W-C8V2-QF be used in forward-bias applications?
Yes - its forward voltage is specified at 0.9 V maximum at 10 mA, making it suitable as a low-drop silicon diode in level-shifting or polarity-protection circuits. However, its primary design intent and characterization focus remain reverse-bias Zener regulation and clamping.
Is Pin 2 truly unconnected, or does it serve a mechanical function?
Pin 2 is electrically unconnected (n.c.) per datasheet Table 2 and schematic symbol; it has no internal bond wire or semiconductor connection. Its presence supports mechanical stability and standardized SOT323 footprint compatibility but contributes zero electrical functionality.
How does thermal resistance affect derating in a real PCB layout?
With Rth(j-a) = 455 K/W on standard FR4 (single-sided copper), power must be derated linearly above 25 °C ambient: at 85 °C ambient, max allowable Ptot drops to ~170 mW to maintain Tj ≤ 150 °C. Layout improvements (copper pour, thermal vias) can reduce effective Rth and extend usable power range.
BZX84W-C8V2-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84W-Q
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±6.1%
- Power - Max:
- 275 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 700 nA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
BZX84W-C8V2-QF FAQ
1.How can I place an order for BZX84W-C8V2-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84W-C8V2-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 BZX84W-C8V2-QF reliable?
The price and inventory of BZX84W-C8V2-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84W-C8V2-QF is usually 5 days.
3.What payment methods are accepted for BZX84W-C8V2-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84W-C8V2-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84W-C8V2-QF?
BZX84W-C8V2-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84W-C8V2-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 BZX84W-C8V2-QF?
For technical support, including BZX84W-C8V2-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84W-C8V2-QF requirements.
6.How does Aetrix verify that BZX84W-C8V2-QF is sourced from the original manufacturer or authorized distributors?
All BZX84W-C8V2-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 BZX84W-C8V2-QF meets industry standards.
7.What is the process for return or replacement of BZX84W-C8V2-QF?
All BZX84W-C8V2-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX84W-C8V2-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 BZX84W-C8V2-QF part is unused and in its original packaging.
Return procedure for BZX84W-C8V2-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84W-C8V2-QF Tags
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