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Nexperia USA Inc. BZX384-A8V2X
- Part No.:
- BZX384-A8V2X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-A8V2X.pdf
- Description:
- DIODE ZENER 8.2V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,935
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Product details
Overview
BZX384-A8V2X from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 8.2 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and 150 °C maximum junction temperature. It provides stable voltage reference in low-power analog circuits, ESD protection clamping, and overvoltage regulation in sensor signal conditioning and microcontroller I/O protection.
For engineers reviewing the BZX384-A8V2X datasheet, BZX384-A8V2X pinout, BZX384-A8V2X application, or BZX384-A8V2X equivalent, key selection criteria include its 8.2 V ±1 % Zener voltage tolerance, 150 Ω typical differential resistance at 5 mA, 0.7 μA max reverse current at 6.6 V, 3.2 mV/K temperature coefficient, and SOD323 thermal resistance of 415 K/W in free air.
Technical Context
This discrete Zener diode operates in reverse-biased avalanche mode to maintain a stable reference voltage across its terminals under varying load and temperature conditions. Its design targets precision voltage regulation in space-constrained PCB layouts where thermal management relies on FR4 board conduction rather than heatsinking.
The device exhibits a positive temperature coefficient of +3.2 mV/K at IZ = 5 mA, enabling predictable drift compensation in multi-diode reference networks. Its non-repetitive peak reverse power dissipation is rated at 40 W for 100 μs pulses, supporting transient overvoltage suppression in low-energy surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.11 V to 8.29 V at IZ = 5 mA - defines tight ±1 % regulation window for precision biasing |
| Differential Resistance (rdif) | 150 Ω max at IZ = 5 mA - determines output impedance and load regulation error |
| Reverse Current (IR) | 0.7 μA max at VR = 6.6 V - ensures minimal leakage in standby or high-impedance reference nodes |
| Temperature Coefficient (SZ) | +3.2 mV/K at IZ = 5 mA - enables predictable voltage drift compensation in temperature-varying environments |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous DC power handling without forced cooling |
| Junction Temperature (Tj) | −65 °C to +150 °C - supports operation in industrial ambient environments with no derating below 125 °C |
| Package | SOD323 (SC-76) - 1.35 mm × 0.85 mm footprint optimized for automated placement and reflow soldering |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package with two leads; cathode marked by bar on top surface; 1.35 mm × 0.85 mm body size, 0.45 mm height, 0.25 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity mark aligns with PCB silkscreen bar for automated optical inspection |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±1 % Zener voltage tolerance | Enables direct replacement in 8.2 V reference designs without recalibration or trimming |
| 300 mW power rating | Supports continuous regulation in 5–10 mA bias networks without external heat sinking |
| 150 °C junction temperature limit | Permits use in enclosed industrial enclosures with ambient temperatures up to 105 °C |
| 415 K/W junction-to-ambient thermal resistance | Allows thermal modeling using standard FR4 PCB layout rules without copper pour augmentation |
| Non-repetitive 40 W surge rating | Clamps ESD transients per IEC 61000-4-2 Level 4 (8 kV contact / 15 kV air) without degradation |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller I/O Protection |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Zener diode provides fixed 8.2 V reference for op-amp biasing and ADC reference scaling. Use Value: ±1 % tolerance ensures <0.5 LSB gain error in 12-bit industrial ADC systems operating across −40 °C to +85 °C. |
Use Scenario: Clamping GPIO pins against ESD and supply rail overshoot in battery-powered edge devices. IC Role / Device Role / Timing Role: Reverse-biased Zener shunts transient energy to ground before MCU input protection diodes activate. Use Value: 40 W non-repetitive surge rating absorbs 100 μs HBM-like pulses without parametric shift or failure. |
| Low-Power Voltage Reference | Power Supply Overvoltage Limiter |
Use Scenario: Generating stable bias for low-noise instrumentation amplifiers in portable medical monitors. IC Role / Device Role / Timing Role: Functions as primary voltage reference in series-shunt regulator topology with pass transistor. Use Value: +3.2 mV/K temperature coefficient allows pairing with complementary-coefficient components to achieve <50 ppm/°C system drift. |
Use Scenario: Preventing damage to downstream LDOs during 12 V rail startup overshoot in automotive accessory modules. IC Role / Device Role / Timing Role: Acts as crowbar element that conducts above 8.29 V to divert excess current from sensitive regulators. Use Value: 150 Ω differential resistance limits clamp current to <50 mA at 9 V transient, avoiding thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5231BS | 8.2 V ±5 % tolerance, 225 mW Ptot, SOT-23 package | Looser tolerance increases reference error; larger SOT-23 footprint consumes 2.5× board area | Select when cost sensitivity outweighs precision and board space constraints |
| Vishay BZX384-C8V2 | 8.2 V ±5 % tolerance, same SOD323 package, identical thermal specs | Higher IR (≤5 μA at 6.6 V) reduces leakage in high-impedance nodes | Select when tighter thermal profile is required but ±5 % regulation is acceptable |
Compared with BZX384-A8V2X, MMBZ5231BS trades precision and miniaturization for cost, while BZX384-C8V2 retains identical form factor and thermal behavior but relaxes voltage accuracy-making the A-grade optimal for designs requiring both space efficiency and ±1 % stability.
Availability
BZX384-A8V2X is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller I/O protection, low-power voltage references, and power supply overvoltage limiters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX384-A8V2X 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, headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.
The BZX384 series belongs to Nexperia's precision Zener diode product line, engineered specifically for compact, thermally efficient voltage regulation and ESD protection in consumer, industrial, and computing applications.
FAQ
What is the maximum continuous reverse current this diode can handle?
The BZX384-A8V2X has a maximum forward current rating of 250 mA, but its continuous reverse (Zener) current is limited by power dissipation. At 25 °C ambient on FR4 PCB, it supports up to 36.6 mA continuously (300 mW ÷ 8.2 V), derating linearly above 25 °C per its 415 K/W thermal resistance.
Does this part meet automotive qualification standards?
No. The BZX384-A8V2X is not automotive-qualified. Nexperia explicitly states in the revision history that these parts were changed to non-automotive qualification in Rev. 4 (January 2023); automotive alternatives carry the "-Q" suffix and undergo AEC-Q200 stress testing.
How does the marking code '28' correspond to BZX384-A8V2?
The marking code '28' is the standardized top-side laser marking for BZX384-A8V2, defined in Table 4 of the datasheet. It uniquely identifies the ±1 % tolerance, 8.2 V variant within the BZX384-A series and is used for automated optical inspection and traceability during SMT assembly.
Can this Zener be used in series to generate higher reference voltages?
Yes, multiple BZX384-A8V2X diodes can be stacked in series to create higher reference voltages (e.g., two in series yield ~16.4 V), but total power dissipation must remain within 300 mW per device, and temperature coefficients will compound-requiring characterization across the full operating range.
BZX384-A8V2X 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):
- 8.2 V
- Tolerance:
- ±1%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 10 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-A8V2X FAQ
1.How can I place an order for BZX384-A8V2X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-A8V2X 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-A8V2X reliable?
The price and inventory of BZX384-A8V2X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-A8V2X is usually 5 days.
3.What payment methods are accepted for BZX384-A8V2X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-A8V2X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-A8V2X?
BZX384-A8V2X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-A8V2X 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-A8V2X?
For technical support, including BZX384-A8V2X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-A8V2X requirements.
6.How does Aetrix verify that BZX384-A8V2X is sourced from the original manufacturer or authorized distributors?
All BZX384-A8V2X 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-A8V2X meets industry standards.
7.What is the process for return or replacement of BZX384-A8V2X?
All BZX384-A8V2X units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-A8V2X, 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-A8V2X part is unused and in its original packaging.
Return procedure for BZX384-A8V2X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-A8V2X Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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