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Nexperia USA Inc. BZX384-A6V8-QX
- Part No.:
- BZX384-A6V8-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-A6V8-QX.pdf
- Description:
- DIODE ZENER 6.8V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,939
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Product details
Overview
BZX384-A6V8-Q from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 6.8 V nominal breakdown at 5 mA, with 80 Ω max differential resistance and 15 μA max reverse current at 5.44 V, used for precision voltage reference and overvoltage protection in automotive power rails.
For engineers reviewing the BZX384-A6V8-Q datasheet, BZX384-A6V8-Q pinout, BZX384-A6V8-Q application, or BZX384-A6V8-Q equivalent, this part supports AEC-Q101-compliant designs requiring stable low-power regulation, tight voltage tolerance, and thermal robustness up to 150 °C junction temperature.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining a stable 6.8 V reference by conducting reverse current above its specified Zener knee voltage. Its ±1 % tolerance ensures minimal deviation across production lots, critical for feedback loops in DC-DC converters and sensor biasing circuits.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it delivers 300 mW total power dissipation at 25 °C ambient and withstands non-repetitive 40 W surge pulses (100 μs, square wave), enabling transient suppression in automotive load-dump scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 6.73 V to 6.87 V at IZ = 5 mA - defines precise regulation window for feedback networks |
| Differential Resistance (rdif) | ≤80 Ω - ensures minimal output voltage shift under varying load current |
| Reverse Current (IR) | ≤15 μA at VR = 5.44 V - guarantees low leakage in standby mode |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets continuous operating limit on standard PCB |
| Non-repetitive Peak Power | 40 W (100 μs pulse) - enables short-duration surge clamping without failure |
| Junction Temperature (Tj) | −65 °C to +150 °C - supports operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability per discrete semiconductor stress test standard |
Pinout & Package
Two-terminal SOD323 (SC-76) plastic surface-mount package with cathode marked by bar; optimized for reflow/wave soldering on FR4 PCBs using standardized footprint per Figure 12/13.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; reverse-biased during Zener operation |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| ±1 % voltage tolerance | Enables direct replacement in high-accuracy feedback paths without trimming resistors |
| Low differential resistance (≤80 Ω) | Maintains regulation stability under ±10 mA load variation in 5 V–12 V systems |
| AEC-Q101 qualification | Validates suitability for automotive power management modules and body control units |
| 40 W non-repetitive peak power | Clamps ISO 7637-2 Pulse 1/2/5a transients without degradation in 12 V battery systems |
| SOD323 footprint compatibility | Allows drop-in placement on space-constrained PCBs with industry-standard reflow profiles |
Applications
| Automotive ECU Power Rail Protection | Industrial Sensor Bias Reference |
|---|---|
Use Scenario: Protecting microcontroller supply inputs against load-dump transients in engine control units. IC Role / Device Role / Timing Role: Shunt regulator clamping voltage to 6.8 V during 40 V/100 ms surges. Use Value: Prevents MCU reset or latch-up while maintaining <15 μA quiescent leakage during normal operation. |
Use Scenario: Providing stable excitation voltage for bridge-based pressure sensors in factory automation. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric ADC measurements. Use Value: ±1 % tolerance ensures <0.5 % full-scale error contribution independent of supply drift. |
| USB-C PD Adapter Feedback Network | Medical Instrument Overvoltage Clamp |
Use Scenario: Setting reference voltage in optocoupler feedback loop of 20 W USB-C power adapters. IC Role / Device Role / Timing Role: Zener element defining secondary-side regulation threshold. Use Value: 80 Ω rdif minimizes output voltage ripple under dynamic load steps up to 3 A. |
Use Scenario: Safeguarding analog front-end inputs in portable ECG monitors against ESD-induced overvoltage. IC Role / Device Role / Timing Role: Low-capacitance (200 pF) clamp limiting input to 6.8 V before signal chain. Use Value: 150 °C max junction temperature supports sterilization-cycle thermal exposure without parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B6V8-Q | ±2 % tolerance (6.66 V–6.94 V), 150 Ω max rdif | Higher voltage spread reduces accuracy in closed-loop feedback | Select when cost sensitivity outweighs regulation precision requirements |
| MMSZ4689T1G | ±5 % tolerance (6.46 V–7.14 V), 300 mW Ptot, SOD-123 package | Larger footprint and wider tolerance limit use in space-constrained AEC-Q101 designs | Choose only if SOD-123 layout compatibility is mandatory and ±5 % is acceptable |
Compared with BZX384-B6V8-Q and MMSZ4689T1G, the BZX384-A6V8-Q provides the narrowest voltage tolerance and lowest dynamic impedance in the SOD323 form factor, making it optimal for automotive and industrial applications where regulation accuracy and board space are jointly constrained.
Availability
BZX384-A6V8-Q is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, USB-C power adapters, and medical instrument protection circuits requiring stable component supply with AEC-Q101 compliance and tight voltage tolerance.
Supply support for BZX384-A6V8-Q 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 devices, headquartered in Nijmegen, Netherlands.
The BZX384-Q series belongs to Nexperia's automotive-qualified Zener diode product line, engineered specifically for precision voltage regulation and transient protection in harsh-environment electronic control units.
FAQ
What is the maximum steady-state power dissipation for BZX384-A6V8-Q?
The BZX384-A6V8-Q has a total power dissipation rating of 300 mW at ambient temperatures ≤25 °C when mounted on an FR4 PCB with single-sided copper and standard footprint. Derating is required above 25 °C per the 415 K/W junction-to-ambient thermal resistance.
How does the ±1 % tolerance affect circuit performance compared to ±2 % variants?
The ±1 % tolerance (6.73 V–6.87 V) reduces worst-case voltage error by half versus ±2 % (6.66 V–6.94 V), directly improving accuracy in feedback networks-e.g., reducing output voltage error from ±1.2% to ±0.6% in a 5 V SMPS design using resistive divider scaling.
Is BZX384-A6V8-Q suitable for reflow soldering on lead-free PCBs?
Yes-Nexperia specifies full compatibility with lead-free reflow profiles per J-STD-020. The SOD323 package withstands peak temperatures up to 260 °C for 30 seconds, and the device is qualified for moisture sensitivity level 1 (MSL1), eliminating bake requirements prior to assembly.
What is the significance of the 40 W non-repetitive peak power rating?
This rating defines the device's ability to absorb short-duration energy surges-specifically 40 W for 100 μs (square wave)-without parametric shift or failure. It enables reliable clamping of ISO 7637-2 Pulse 5a load-dump events in 12 V automotive systems where peak voltages reach 60 V.
BZX384-A6V8-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX384-Q
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±1%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 4 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
BZX384-A6V8-QX FAQ
1.How can I place an order for BZX384-A6V8-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-A6V8-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 BZX384-A6V8-QX reliable?
The price and inventory of BZX384-A6V8-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-A6V8-QX is usually 5 days.
3.What payment methods are accepted for BZX384-A6V8-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-A6V8-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-A6V8-QX?
BZX384-A6V8-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-A6V8-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 BZX384-A6V8-QX?
For technical support, including BZX384-A6V8-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-A6V8-QX requirements.
6.How does Aetrix verify that BZX384-A6V8-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-A6V8-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 BZX384-A6V8-QX meets industry standards.
7.What is the process for return or replacement of BZX384-A6V8-QX?
All BZX384-A6V8-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-A6V8-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 BZX384-A6V8-QX part is unused and in its original packaging.
Return procedure for BZX384-A6V8-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-A6V8-QX Tags
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