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Nexperia USA Inc. BZX384-A6V8X
- Part No.:
- BZX384-A6V8X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-A6V8X.pdf
- Description:
- DIODE ZENER 6.8V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,793
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Product details
Overview
BZX384-A6V8X from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision low-power voltage reference and clamping in space-constrained PCBs. It delivers 6.8 V nominal breakdown at 5 mA, with 80 Ω max differential resistance, 2 μA max reverse current at 4.5 V, and operates across –65 °C to +150 °C ambient.
For engineers reviewing the BZX384-A6V8X datasheet, BZX384-A6V8X pinout, BZX384-A6V8X application, or BZX384-A6V8X equivalent, key selection criteria include tight 1 % voltage tolerance, low 300 mW power dissipation limit, SOD323 footprint compatibility, thermal resistance of 415 K/W (junction-to-ambient), and non-repetitive surge capability up to 40 W for transient suppression.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to maintain stable DC voltage under varying load and temperature conditions. Its 6.8 V nominal Zener voltage is specified at 5 mA test current with ±1 % initial tolerance and a positive temperature coefficient of +1.2 mV/K, enabling predictable drift compensation in bias networks.
The device uses planar epitaxial construction for low noise and high reliability, with junction-to-solder-point thermal resistance of 110 K/W. It supports pulse operation up to 100 μs with 40 W peak reverse power, making it suitable for ESD protection and overvoltage clamping in low-energy signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.73 V to 6.87 V at IZ = 5 mA - ensures precise 6.8 V regulation within ±1 % tolerance for reference circuits |
| Differential Resistance (rdif) | ≤80 Ω at IZ = 5 mA - minimizes output voltage variation under load changes in feedback or bias networks |
| Reverse Current (IR) | ≤2 μA at VR = 4.5 V - guarantees low leakage in high-impedance sensing or standby power paths |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C on FR4 PCB - defines maximum continuous DC power handling in standard layout |
| Peak Reverse Power (PZSM) | 40 W for tp = 100 μs - enables robust transient suppression without thermal runaway |
| Temperature Coefficient (SZ) | +1.2 mV/K at IZ = 5 mA - provides predictable positive drift for temperature-compensated references |
| Junction Temperature (Tj) | 150 °C maximum - sets upper thermal limit for reliable long-term operation in enclosed environments |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package with 2 leads; cathode marked by bar on top surface; 2.7 mm × 1.6 mm footprint; 0.45 mm typical height.
| 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 |
|---|---|
| ±1 % Zener voltage tolerance | Enables direct replacement in precision 6.8 V reference designs without recalibration or resistor trimming |
| Low 80 Ω dynamic impedance | Reduces output voltage deviation under ±1 mA load shifts, critical for analog sensor biasing |
| 415 K/W junction-to-ambient thermal resistance | Allows safe 300 mW operation on standard single-sided FR4 without heatsinking or copper pour |
| Non-repetitive 40 W surge rating | Clamps fast transients (e.g., IEC 61000-4-2 ESD) without degradation when used with series current limiting |
| SOD323 footprint compatibility | Supports automated placement and reflow in high-density layouts where 0805 or larger packages are impractical |
Applications
| Power Supply Reference | Signal Level Clamping |
|---|---|
|
Use Scenario: Providing stable 6.8 V reference for ADC voltage dividers and op-amp biasing in battery-powered IoT sensors. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference potential independent of supply fluctuations. Use Value: ±1 % tolerance eliminates need for external trimming resistors; 2 μA leakage preserves microamp-level standby current budgets. |
Use Scenario: Limiting analog input voltage to protect MCU GPIO pins from overvoltage during hot-plug events. IC Role / Device Role / Timing Role: Shunt clamp that conducts only above 6.8 V, diverting excess current away from sensitive inputs. Use Value: 40 W surge rating handles short-duration spikes; SOD323 size fits near connector entry points without board real estate penalty. |
| Current Source Biasing | Temperature-Compensated Reference |
|
Use Scenario: Setting base current for low-power PNP transistor current sources in LED driver feedback loops. IC Role / Device Role / Timing Role: Fixed-voltage node establishing emitter-base voltage drop to define collector current. Use Value: 80 Ω dynamic impedance ensures <10 mV shift across 100 μA current variations, maintaining current accuracy. |
Use Scenario: Paired with negative-TC Zener (e.g., BZX384-A3V3) to create zero-drift 10.1 V reference for precision instrumentation. IC Role / Device Role / Timing Role: Positive-temperature-coefficient (+1.2 mV/K) element balancing negative-TC component drift. Use Value: Matched +1.2 mV/K coefficient enables cancellation of thermal drift across –40 °C to +85 °C operating range. |
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 | ±2 % tolerance (6.66 V–6.94 V), 150 Ω max rdif | Higher voltage spread and impedance reduce accuracy in precision references | Select when cost sensitivity outweighs 1 % tolerance requirement and load regulation is less critical |
| MMSZ4689T1G | 6.8 V ±5 %, 100 Ω max rdif, SOD-123 package (3.7 mm × 1.6 mm) | Larger footprint and wider tolerance limit use in miniaturized or high-accuracy designs | Choose only if SOD-123 is already standardized in production and ±5 % regulation is acceptable |
Compared with BZX384-B6V8 and MMSZ4689T1G, the BZX384-A6V8X offers the tightest voltage tolerance and lowest dynamic impedance in the smallest footprint, making it optimal for space-constrained precision regulation where thermal and electrical stability are prioritized over unit cost.
Availability
BZX384-A6V8X is available at Aetrix Electronics and suitable for power supply reference, signal clamping, current source biasing, and temperature-compensated reference applications requiring stable component supply and consistent parametric performance across production lots.
Supply support for BZX384-A6V8X 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 manufacturing rooted in process optimization and automotive-grade quality systems.
The BZX384 series belongs to Nexperia's precision Zener regulator portfolio, engineered specifically for low-power, space-constrained voltage reference and clamping in consumer, industrial, and communication equipment where parametric consistency and SMD scalability matter.
FAQ
What is the maximum continuous forward current for BZX384-A6V8X?
The BZX384-A6V8X is not rated for continuous forward conduction; its primary function is reverse-bias Zener operation. Absolute maximum forward current is 250 mA per limiting values table, but sustained forward bias exceeds design intent and risks thermal overstress. Forward voltage is 0.9 V at 10 mA pulse test condition - use only for brief verification or ESD path analysis.
Can BZX384-A6V8X replace a 1N4734A in existing designs?
No - the 1N4734A is a 5.6 V, 1 W through-hole Zener with TO-204AA package, while BZX384-A6V8X is a 6.8 V, 300 mW SOD323 device. Voltage mismatch (5.6 V vs. 6.8 V), power rating difference (1 W vs. 0.3 W), and package incompatibility (axial lead vs. SMD) prevent direct substitution without circuit redesign and layout revision.
How does the +1.2 mV/K temperature coefficient affect long-term stability?
The +1.2 mV/K coefficient means output voltage increases by ~1.2 mV per °C rise in junction temperature. Over a 100 °C range (–25 °C to +75 °C), this causes ~120 mV drift - manageable in compensated references but significant in unbuffered analog rails. For minimal drift, pair with a negative-TC Zener or use active compensation circuits.
Is BZX384-A6V8X suitable for automotive applications?
No - per Nexperia's revision history (Rev. 4, Jan 2023), the BZX384 series is explicitly designated non-automotive qualified. It lacks AEC-Q200 stress testing and automotive-grade qualification. For automotive use, select Nexperia's BZX384-Q series or equivalent automotive-qualified Zeners with documented PPAP and failure rate data.
BZX384-A6V8X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX384
- 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):
- 8 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-A6V8X FAQ
1.How can I place an order for BZX384-A6V8X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-A6V8X 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-A6V8X reliable?
The price and inventory of BZX384-A6V8X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-A6V8X is usually 5 days.
3.What payment methods are accepted for BZX384-A6V8X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-A6V8X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-A6V8X?
BZX384-A6V8X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-A6V8X 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-A6V8X?
For technical support, including BZX384-A6V8X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-A6V8X requirements.
6.How does Aetrix verify that BZX384-A6V8X is sourced from the original manufacturer or authorized distributors?
All BZX384-A6V8X 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-A6V8X meets industry standards.
7.What is the process for return or replacement of BZX384-A6V8X?
All BZX384-A6V8X units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-A6V8X, 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-A6V8X part is unused and in its original packaging.
Return procedure for BZX384-A6V8X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-A6V8X Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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