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Nexperia USA Inc. BZX384-A2V7X
- Part No.:
- BZX384-A2V7X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-A2V7X.pdf
- Description:
- DIODE ZENER 2.7V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,846
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Product details
Overview
BZX384-A2V7X from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 2.7 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and −65 °C to +150 °C operating temperature range. It provides precise low-voltage regulation in space-constrained consumer and industrial power management circuits.
For engineers reviewing the BZX384-A2V7X datasheet, BZX384-A2V7X pinout, BZX384-A2V7X application, or BZX384-A2V7X equivalent, key selection criteria include its tight ±1 % tolerance, low 2.7 V Zener voltage, 600 Ω maximum differential resistance at 5 mA, 20 μA reverse current at 1 V, and thermal resistance of 415 K/W in free air - all critical for stable biasing and reference design in portable electronics.
Technical Context
This device operates as a two-terminal shunt voltage reference, maintaining a stable 2.7 V output across load variations by conducting reverse current above its specified Zener knee. Its junction temperature must remain ≤150 °C under continuous operation, with non-repetitive peak reverse power limited to 40 W for 100 μs pulses.
The diode exhibits a negative temperature coefficient of −3.5 mV/K at 5 mA, ensuring predictable drift behavior in ambient temperature shifts. Its 450 pF capacitance at 0 V and 1 MHz enables use in low-frequency stabilization without significant signal coupling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.67 V to 2.73 V at IZ = 5 mA - defines precision DC reference point for analog sensing or supply rail clamping |
| Tolerance | ±1 % - ensures minimal unit-to-unit variation in voltage-sensitive feedback loops |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous bias current limit (~111 mA at 2.7 V) |
| Differential Resistance (rdif) | ≤600 Ω at IZ = 5 mA - determines regulation stiffness and output impedance in active bias networks |
| Reverse Current (IR) | ≤20 μA at VR = 1 V - guarantees low leakage in high-impedance reference nodes |
| Thermal Resistance (Rth(j-a)) | 415 K/W in free air - dictates derating curve: full power only below ~25 °C ambient |
| Non-repetitive Peak Power | 40 W for 100 μs - supports transient overvoltage suppression in ESD-coupled interfaces |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 2-pin, 2.3 mm × 1.35 mm body, 0.45 mm height, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMD packaging | SOD323 footprint enables placement in dense PCB layouts with 0.65 mm pitch solder pads |
| Precision voltage reference | ±1 % tolerance ensures <±27 mV error at 2.7 V - suitable for ADC reference dividers and op-amp biasing |
| Controlled thermal performance | 110 K/W junction-to-solder-point resistance allows effective heat transfer via cathode pad to copper pour |
| Robust surge handling | 40 W non-repetitive peak power rating supports IEC 61000-4-2 Level 4 ESD protection circuit integration |
| Wide operating temperature | −65 °C to +150 °C range permits use in automotive under-hood and industrial motor control environments |
Applications
| USB Port Voltage Clamp | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Clamping 5 V USB VBUS line against overvoltage transients during hot-plug events. IC Role / Device Role / Timing Role: Shunt regulator placed between VBUS and GND, conducting excess current when voltage exceeds 2.7 V threshold. Use Value: Prevents damage to downstream USB PHY ICs by limiting excursion to safe margin below 3.3 V logic rails. |
Use Scenario: Generating a clean, temperature-stable reset threshold for 3.3 V microcontrollers. IC Role / Device Role / Timing Role: Zener diode in RC-based reset generator, setting precise 2.7 V trip point for brown-out detection. Use Value: Enables reliable reset assertion down to −40 °C due to known −3.5 mV/K TC and low 20 μA leakage. |
| Li-ion Battery Cell Monitor | Industrial Sensor Signal Conditioning |
Use Scenario: Providing reference voltage for analog front-end comparators monitoring individual 3.7 V Li-ion cells. IC Role / Device Role / Timing Role: Low-power voltage reference in divider network feeding comparator input. Use Value: ±1 % tolerance ensures cell voltage measurement accuracy within ±37 mV, critical for state-of-charge estimation. |
Use Scenario: Biasing bridge sensors in 4–20 mA transmitter modules operating across −40 °C to +85 °C. IC Role / Device Role / Timing Role: Stable 2.7 V reference source for Wheatstone bridge excitation and instrumentation amplifier gain setting. Use Value: Negative TC compensates for typical silicon strain gauge drift, improving overall system linearity. |
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 MMBZ5221BS-7-F | 2.4 V nominal, ±5 % tolerance, 200 mW Ptot, SOD-123 package | Lower voltage and looser tolerance; higher thermal resistance (500 K/W) | Select when cost sensitivity outweighs precision and board space is not constrained |
| Vishay BZX384-C2V7 | Same 2.7 V nominal but ±5 % tolerance, identical SOD323 package and 300 mW rating | Higher IR (≤100 μA at 1 V) and wider VZ spread (2.5–2.9 V) | Choose for non-critical biasing where 5 % tolerance is acceptable and interchangeability with legacy BZX384-C stock is required |
Compared with BZX384-A2V7X, MMBZ5221BS-7-F trades precision and thermal performance for cost and availability, while BZX384-C2V7 retains identical form factor and power rating but sacrifices regulation accuracy - making the A-grade part optimal for designs requiring guaranteed 2.7 V ±27 mV stability across temperature and production lot.
Availability
BZX384-A2V7X is available at Aetrix Electronics and suitable for USB power management, microcontroller reset generation, Li-ion battery monitoring, and industrial sensor signal conditioning requiring stable component supply and long-term obsolescence planning.
Supply support for BZX384-A2V7X 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, logic, and MOSFET solutions, headquartered in Nijmegen, Netherlands.
The BZX384 series belongs to Nexperia's precision Zener diode product line, engineered specifically for compact, low-power voltage reference and regulation in consumer, computing, and industrial applications where SOD323 footprint and ±1 % tolerance are essential.
FAQ
What is the maximum continuous forward current for BZX384-A2V7X?
The device is not intended for forward conduction; its absolute maximum forward current is 250 mA per limiting values table, but sustained forward bias violates Zener operation. In normal use, forward voltage remains ≤0.9 V at 10 mA - sufficient only for brief test conditions, not functional operation.
Can BZX384-A2V7X be used in place of a 3.3 V Zener diode?
No - its nominal Zener voltage is 2.7 V (2.67–2.73 V), not 3.3 V. Substituting it for a 3.3 V part would cause premature conduction and incorrect regulation. For 3.3 V, use BZX384-A3V3 (3.26–3.34 V) or BZX384-B3V3 (3.23–3.37 V), both in same SOD323 package.
How does the −3.5 mV/K temperature coefficient affect circuit performance?
At 2.7 V, this coefficient causes ≈−9.5 mV/°C drift - e.g., output drops by 95 mV over a 10 °C rise. Designers compensate by selecting complementary TC components or using it intentionally to offset positive-drift elements like resistors or sensors in precision analog chains.
Is BZX384-A2V7X automotive qualified?
No - Revision 4 explicitly states "Products changed to non-automotive qualification" and directs users to Nexperia's separate −Q automotive series. This part lacks AEC-Q200 stress testing and is intended for commercial/industrial use only; automotive designs require verified automotive-grade alternatives.
BZX384-A2V7X 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):
- 2.7 V
- Tolerance:
- ±1%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 83 Ohms
- Current - Reverse Leakage @ Vr:
- 20 µA @ 1 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-A2V7X FAQ
1.How can I place an order for BZX384-A2V7X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-A2V7X 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-A2V7X reliable?
The price and inventory of BZX384-A2V7X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-A2V7X is usually 5 days.
3.What payment methods are accepted for BZX384-A2V7X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-A2V7X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-A2V7X?
BZX384-A2V7X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-A2V7X 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-A2V7X?
For technical support, including BZX384-A2V7X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-A2V7X requirements.
6.How does Aetrix verify that BZX384-A2V7X is sourced from the original manufacturer or authorized distributors?
All BZX384-A2V7X 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-A2V7X meets industry standards.
7.What is the process for return or replacement of BZX384-A2V7X?
All BZX384-A2V7X units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-A2V7X, 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-A2V7X part is unused and in its original packaging.
Return procedure for BZX384-A2V7X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-A2V7X Tags
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