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Nexperia USA Inc. BZX384-B8V2-QX
- Part No.:
- BZX384-B8V2-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-B8V2-QX.pdf
- Description:
- DIODE ZENER 8.2V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,187
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Product details
Overview
BZX384-B8V2-Q from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 8.2 V nominal breakdown at 5 mA, with 300 mW total power dissipation and AEC-Q101 qualification for automotive voltage reference and overvoltage protection circuits.
For engineers reviewing the BZX384-B8V2-Q datasheet, BZX384-B8V2-Q pinout, BZX384-B8V2-Q application, or BZX384-B8V2-Q equivalent, this part delivers stable 8.2 V regulation in space-constrained PCBs, supports transient surge handling up to 40 W (100 μs), and provides low differential resistance (80 Ω max) and tight temperature coefficient (3.2–6.2 mV/K) for precision biasing in automotive ECUs and sensor interfaces.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable reference voltage under varying load and temperature conditions. Its 8.2 V nominal Zener voltage is specified at IZ = 5 mA with ±2 % tolerance, and it exhibits a positive temperature coefficient of 3.2–6.2 mV/K across its operating current range.
The device features low thermal resistance (Rth(j-sp) = 110 K/W to solder point) and is qualified per AEC-Q101 for automotive use, supporting operation from −65 °C to +150 °C ambient and junction temperatures. It delivers non-repetitive peak reverse current of 4.0 A at 100 μs pulse width.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.04 V to 8.36 V at IZ = 5 mA - ensures precise 8.2 V reference with ±2 % tolerance for stable biasing in analog front-ends. |
| Differential Resistance (rdif) | ≤80 Ω at IZ = 5 mA - minimizes output voltage variation under load changes, critical for low-noise voltage references. |
| Reverse Current (IR) | ≤0.7 μA at VR = 6.56 V - guarantees low leakage in standby circuits and high-impedance sensing nodes. |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C on FR4 PCB - defines continuous DC power handling in standard surface-mount layouts. |
| Non-repetitive Peak Power (PZSM) | 40 W at tp = 100 μs - enables robust transient suppression in automotive load-dump and ESD protection paths. |
| Temperature Coefficient (SZ) | 3.2–6.2 mV/K at IZ = 5 mA - quantifies voltage drift with temperature, enabling accurate compensation in wide-temp environments. |
| Junction Temperature (Tj) | 150 °C maximum - sets absolute thermal limit for reliability in under-hood automotive modules. |
Pinout & Package
SOD323 (SC-76) plastic surface-mounted package: 2-terminal, small-outline diode with cathode marked by a bar on the top surface; footprint optimized for reflow and wave soldering per Nexperia's recommended land patterns.
| 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) | Connected to ground or lower-potential rail; completes Zener conduction path during regulation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per discrete semiconductor stress standards. |
| ±2 % Zener tolerance | Enables tighter system-level voltage margin control than ±5 % variants, reducing need for post-production trimming in safety-critical modules. |
| Low rdif (≤80 Ω) | Improves regulation accuracy under dynamic load steps-critical for ADC reference buffers and op-amp bias networks. |
| 40 W surge capability | Supports single-event transient suppression without external TVS, simplifying layout in LIN bus transceivers and CAN node power rails. |
| SOD323 footprint | 0.95 mm × 1.65 mm body size allows placement in dense automotive PCBs where board area is constrained by EMI shielding or connector spacing. |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 8.2 V reference for microcontroller ADC inputs monitoring battery voltage and cabin temperature sensors. IC Role / Device Role / Timing Role: Zener voltage reference diode establishing precision analog reference rail independent of main 12 V supply fluctuations. Use Value: Maintains <±0.5 % reference stability over −40 °C to +125 °C ambient, ensuring consistent sensor measurement accuracy across vehicle lifetime. |
Use Scenario: Biasing photodiode amplifiers in optical smoke detectors requiring low-drift DC offset. IC Role / Device Role / Timing Role: Low-noise Zener shunt regulator supplying clean 8.2 V to op-amp dual-rail supplies. Use Value: Differential resistance ≤80 Ω and IR ≤0.7 μA minimize input offset drift and dark-current error in high-gain transimpedance stages. |
| Automotive LIN Transceiver Power Rail | Consumer Appliance Overvoltage Protection |
Use Scenario: Clamping LIN bus transceiver VCC rail against load-dump transients in door module electronics. IC Role / Device Role / Timing Role: Surge-rated Zener acting as primary overvoltage clamp before LDO regulator input. Use Value: Withstands 40 W non-repetitive surges (100 μs) while holding rail below 9.5 V, preventing transceiver latch-up during ISO 7637-2 Pulse 5a events. |
Use Scenario: Protecting microcontroller I/O pins from accidental 12 V misconnection in smart appliance control boards. IC Role / Device Role / Timing Role: Low-leakage Zener shunt limiter placed between I/O line and ground. Use Value: IR ≤0.7 μA at 6.56 V ensures negligible standby current draw, preserving battery life in always-on appliance modes. |
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-B8V2 | Same electrical specs but lacks AEC-Q101 qualification and automotive-grade traceability. | Restricted to commercial/industrial use; not approved for automotive production programs. | Select only for cost-sensitive non-automotive designs where qualification documentation is not required. |
| MMSZ5236B-TP | 8.2 V ±5 % tolerance, 500 mW Ptot, SOD-123 package (larger footprint), no AEC-Q101 rating. | Higher power handling but looser tolerance and larger board area; unsuitable for AEC-compliant systems. | Use when higher continuous power (>300 mW) is needed and automotive qualification is unnecessary. |
Compared with BZX384-B8V2-Q, the BZX384-B8V2 sacrifices automotive qualification for identical regulation performance, while MMSZ5236B-TP trades tolerance and qualification for higher power and different packaging-making the Q-series the sole choice for AEC-Q101–mandated 8.2 V reference design.
Availability
BZX384-B8V2-Q is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal chains, and consumer appliance overvoltage protection requiring stable component supply with full AEC-Q101 traceability and long-term lifecycle support.
Supply support for BZX384-B8V2-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 product line, engineered specifically for precision voltage reference and transient protection in harsh-environment automotive electronics.
FAQ
What is the maximum continuous forward current for BZX384-B8V2-Q?
The device is not intended for continuous forward conduction; its absolute maximum forward current is 250 mA per limiting values table, but typical operation is reverse-biased in Zener breakdown. Forward voltage is 0.9 V at 10 mA pulse test condition, and sustained forward bias risks thermal runaway due to lack of thermal derating data in forward mode.
Can BZX384-B8V2-Q replace BZX384-C8V2-Q in an existing design?
No-BZX384-C8V2-Q has ±5 % tolerance (7.7–8.7 V), while BZX384-B8V2-Q is ±2 % (8.04–8.36 V). Substituting introduces tighter voltage control but may cause over-regulation if downstream circuitry relies on the wider C-series tolerance band; verify reference stability margins and worst-case Zener current compliance before replacement.
Is the SOD323 package compatible with standard reflow profiles?
Yes-the datasheet specifies reflow soldering footprints (Fig. 12) and qualifies the device for JEDEC J-STD-020 moisture sensitivity level 1. Recommended peak temperature is 260 °C for ≤10 seconds, with ramp rates and soak times aligned to IPC-7095 guidelines for small-signal plastic packages.
Does BZX384-B8V2-Q require a series resistor in all applications?
Yes-a current-limiting resistor is mandatory to set Zener operating current within 1 mA to 250 mA range and prevent thermal destruction. For 8.2 V regulation from a 12 V rail, a 470 Ω resistor establishes ~8 mA IZ, staying within 300 mW Ptot and maintaining rdif in optimal region per datasheet characteristics.
BZX384-B8V2-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):
- 8.2 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 700 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
BZX384-B8V2-QX FAQ
1.How can I place an order for BZX384-B8V2-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-B8V2-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-B8V2-QX reliable?
The price and inventory of BZX384-B8V2-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-B8V2-QX is usually 5 days.
3.What payment methods are accepted for BZX384-B8V2-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-B8V2-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-B8V2-QX?
BZX384-B8V2-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-B8V2-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-B8V2-QX?
For technical support, including BZX384-B8V2-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-B8V2-QX requirements.
6.How does Aetrix verify that BZX384-B8V2-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-B8V2-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-B8V2-QX meets industry standards.
7.What is the process for return or replacement of BZX384-B8V2-QX?
All BZX384-B8V2-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-B8V2-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-B8V2-QX part is unused and in its original packaging.
Return procedure for BZX384-B8V2-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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