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Nexperia USA Inc. BZX384-C6V8-QX
- Part No.:
- BZX384-C6V8-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C6V8-QX.pdf
- Description:
- DIODE ZENER 6.8V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,054
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Product details
Overview
BZX384-C6V8-Q from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 6.4 V to 7.2 V nominal breakdown at 5 mA, with 80 Ω max differential resistance and 15 μA reverse current at 1 V, used for precision low-power voltage reference and overvoltage protection in automotive control modules.
For engineers reviewing the BZX384-C6V8-Q datasheet, BZX384-C6V8-Q pinout, BZX384-C6V8-Q application, or BZX384-C6V8-Q equivalent, this page delivers verified Zener voltage, thermal resistance, peak surge capability, AEC-Q101 qualification status, and automotive-grade reliability data required for board-level power rail stabilization and ESD-tolerant reference design.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to maintain stable voltage across load variations, with temperature coefficient of +1.2 mV/K at 5 mA enabling predictable drift compensation in ambient ranges from −65 °C to +150 °C. Its 40 W non-repetitive peak reverse power dissipation supports transient suppression during load dump events.
The device features 110 K/W junction-to-solder-point thermal resistance and is qualified per AEC-Q101 for automotive under-hood applications. It exhibits 0.9 V forward voltage at 10 mA and 1.1 V at 100 mA, confirming robust conduction in clamp/fault-detection configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.4 V to 7.2 V at IZ = 5 mA - defines regulated output range for 6.8 V nominal rail stabilization |
| Differential Resistance (rdif) | ≤80 Ω - ensures <10 mV output variation per 1 mA load change, critical for low-noise analog references |
| Reverse Current (IR) | ≤15 μA at VR = 1 V - guarantees minimal leakage in standby power domains |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets continuous DC regulation limit on standard FR4 PCB |
| Non-repetitive Peak Power | 40 W for tp = 100 μs - enables single-event surge clamping without degradation |
| Junction Temperature (Tj) | −65 °C to +150 °C - supports operation in engine control units and transmission ECUs |
| AEC-Q101 Qualified | Yes - validated for automotive discrete semiconductor stress testing including HTRB, HTSL, and temperature cycling |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package with 2 leads, 1.35 mm × 0.85 mm body size, 0.45 mm lead pitch, and cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker determines correct orientation for reverse-bias operation |
| 2 | Anode (A) | Tied to ground or lower-potential rail; completes Zener conduction path during voltage regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including high-temp storage and thermal shock cycles |
| ±5 % Zener tolerance | Enables cost-optimized voltage reference where tighter tolerance is not required for system-level margin |
| 415 K/W junction-to-ambient Rth(j-a) | Defines derating curve: full 300 mW only at ≤25 °C ambient; requires thermal relief for >50 °C environments |
| 150 °C max junction temperature | Supports sustained operation in proximity to power MOSFETs or microcontrollers in compact ECUs |
| Marking code D7 | Enables visual identification on assembled PCBs and automated optical inspection (AOI) traceability |
Applications
| Engine Control Unit (ECU) Reference | Infotainment Power Sequencing |
|---|---|
Use Scenario: Providing stable 6.8 V reference for ADC biasing and sensor signal conditioning in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Zener voltage reference source for analog front-end circuitry requiring <1 % long-term stability. Use Value: Maintains 6.4–7.2 V regulation across −40 °C to +125 °C ambient, ensuring consistent ADC full-scale accuracy despite battery voltage fluctuations. |
Use Scenario: Enabling controlled power-up sequencing of display backlight drivers and audio amplifiers in automotive head units. IC Role / Device Role / Timing Role: Voltage supervisor element that triggers enable signals when main 12 V rail reaches regulated threshold. Use Value: 80 Ω dynamic impedance ensures fast response to rail ramp-up, reducing startup delay by ≤200 μs versus higher-rdif alternatives. |
| Body Control Module (BCM) Overvoltage Clamp | ADAS Camera Module Protection |
Use Scenario: Clamping transients on LIN bus power lines during load dump events in door module electronics. IC Role / Device Role / Timing Role: Transient voltage suppressor placed parallel to supply input to absorb 40 W surges within 100 μs. Use Value: 40 W peak power rating prevents latch-up or failure during ISO 7637-2 Pulse 5a tests, extending BCM field life. |
Use Scenario: Protecting image sensor bias rails from ESD and cable discharge events in rear-view camera assemblies. IC Role / Device Role / Timing Role: Low-capacitance (200 pF) Zener shunt element integrated into sensor power filter network. Use Value: 200 pF capacitance at 0 V avoids signal integrity degradation on high-speed MIPI CSI-2 clock lines sharing same PCB layer. |
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), 40 Ω rdif, 2 μA IR at 1 V | Higher precision needed for feedback loops in switching regulators | Select when tighter regulation and lower leakage outweigh cost premium |
| MMSZ5234B-TP | ±5 % tolerance (6.46 V–7.14 V), 100 Ω rdif, 5 μA IR at 1 V, SOD-123 package | Larger footprint; less suitable for ultra-dense automotive PCBs | Choose only if SOD-123 compatibility is required for legacy layout reuse |
Compared with BZX384-B6V8-Q, the C-grade offers lower cost and sufficient stability for non-critical references; versus MMSZ5234B-TP, it delivers superior thermal performance (110 K/W vs. ~150 K/W) and smaller footprint for space-constrained ADAS modules.
Availability
BZX384-C6V8-Q is available at Aetrix Electronics and suitable for automotive ECU reference design, infotainment power sequencing, and ADAS camera protection requiring stable component supply with AEC-Q101 compliance and full traceability.
Supply support for BZX384-C6V8-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 solutions, with leadership in automotive-qualified components and advanced packaging.
The BZX384-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for automotive voltage regulation, reference, and transient suppression in harsh-environment electronic control units.
FAQ
What is the maximum continuous power dissipation for BZX384-C6V8-Q at 85 °C ambient?
At 85 °C ambient, derating applies: Ptot = 300 mW × (1 − (85 − 25)/415) = 155 mW. This value is derived from the 415 K/W junction-to-ambient thermal resistance and ensures safe operation without exceeding 150 °C junction temperature.
Is BZX384-C6V8-Q suitable for bidirectional ESD protection?
No - it is a unidirectional Zener diode optimized for reverse-bias regulation. For bidirectional ESD protection, Nexperia recommends PESDxUSB30 series TVS diodes, which provide symmetric clamping and sub-nanosecond response.
How does the +1.2 mV/K temperature coefficient affect regulation accuracy over temperature?
Over a 100 °C range (−40 °C to +60 °C), the coefficient causes ±120 mV shift in VZ. With nominal 6.8 V, this yields ±1.76 % drift - acceptable for non-precision references but insufficient for bandgap-calibrated systems requiring <0.5 % total error.
Can BZX384-C6V8-Q replace BZX384-A6V8-Q in an existing design?
Yes, electrically - both share identical package, pinout, and absolute maximum ratings. However, the ±5 % tolerance (C-grade) introduces wider VZ spread (6.4–7.2 V vs. 6.73–6.87 V), potentially affecting loop stability in feedback-sensitive circuits like voltage-controlled oscillators.
BZX384-C6V8-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:
- ±5%
- 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-C6V8-QX FAQ
1.How can I place an order for BZX384-C6V8-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C6V8-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-C6V8-QX reliable?
The price and inventory of BZX384-C6V8-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-C6V8-QX is usually 5 days.
3.What payment methods are accepted for BZX384-C6V8-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C6V8-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C6V8-QX?
BZX384-C6V8-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C6V8-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-C6V8-QX?
For technical support, including BZX384-C6V8-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C6V8-QX requirements.
6.How does Aetrix verify that BZX384-C6V8-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-C6V8-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-C6V8-QX meets industry standards.
7.What is the process for return or replacement of BZX384-C6V8-QX?
All BZX384-C6V8-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C6V8-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-C6V8-QX part is unused and in its original packaging.
Return procedure for BZX384-C6V8-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C6V8-QX Tags
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