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Nexperia USA Inc. BZX384-A2V7-QX
- Part No.:
- BZX384-A2V7-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-A2V7-QX.pdf
- Description:
- DIODE ZENER 2.7V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:1,750
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Product details
Overview
BZX384-A2V7-Q from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision low-power voltage reference and regulation in automotive and industrial circuits. It delivers a nominal 2.7 V breakdown voltage at 5 mA, with 600 Ω max differential resistance, 100 μA max reverse current at 1 V, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the BZX384-A2V7-Q datasheet, BZX384-A2V7-Q pinout, BZX384-A2V7-Q application, or BZX384-A2V7-Q equivalent, key selection criteria include tight 2.7 V ±1 % tolerance, low 300 mW power dissipation, SOD323 footprint compatibility, and automotive-grade reliability per AEC-Q101.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to maintain stable voltage across load variations and supply fluctuations. Its 2.7 V nominal Zener voltage is specified at IZ = 5 mA, with temperature coefficient of −3.5 to 0.0 mV/K and differential resistance ≤600 Ω - enabling predictable regulation in low-current bias networks and feedback references.
The device supports transient suppression via non-repetitive peak reverse power dissipation up to 40 W (100 μs pulse), while maintaining junction temperature ≤150 °C. Thermal resistance from junction to ambient is 415 K/W on FR4 PCB, confirming suitability for space-constrained surface-mount designs without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.67 V to 2.73 V at IZ = 5 mA - ensures precise 2.7 V reference within ±1 % tolerance for feedback loops and voltage monitoring. |
| Differential Resistance (rdif) | ≤600 Ω - limits output impedance drift under varying load current, critical for stable regulation in low-power analog circuits. |
| Reverse Current (IR) | ≤100 μA at VR = 1 V - guarantees minimal leakage in standby or high-impedance sensing nodes. |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - defines maximum continuous DC power handling on standard FR4 PCB with single-sided copper. |
| Non-repetitive Peak Power | 40 W (100 μs pulse) - enables transient overvoltage clamping without permanent damage during ESD or surge events. |
| Junction Temperature (Tj) | −65 °C to +150 °C - supports operation in extended automotive ambient ranges including engine control units. |
| AEC-Q101 Qualified | Yes - validated for automotive discrete semiconductor stress testing, including HTGB, HTRB, and temperature cycling. |
Pinout & Package
The BZX384-A2V7-Q is housed in a SOD323 (SC-76) plastic surface-mount package measuring 1.8 mm × 1.35 mm × 0.95 mm, with cathode marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity-sensitive terminal where reverse breakdown occurs - must be held at higher potential than anode for Zener conduction. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path and determines current direction during regulation. |
Key Features
| Feature | Design Value |
|---|---|
| ±1 % Zener voltage tolerance | Enables accurate voltage setting in precision references without post-manufacturing trimming. |
| AEC-Q101 qualification | Confirms robustness for automotive under-hood environments including thermal cycling, humidity, and mechanical shock. |
| SOD323 footprint | Supports high-density PCB layouts with 0.95 mm profile and industry-standard reflow/wave soldering compatibility. |
| Low 300 mW power rating | Optimized for battery-powered and energy-efficient systems where thermal management is constrained. |
| 40 W surge capability | Provides inherent transient protection in signal conditioning paths without requiring external TVS devices. |
Applications
| Automotive Sensor Biasing | Industrial Reference Voltage |
|---|---|
Use Scenario: Providing stable bias voltage to analog sensor front-ends (e.g., pressure, temperature transducers) in engine control modules. IC Role / Device Role / Timing Role: Zener voltage reference establishing fixed operating point for op-amp input stages and ADC reference dividers. Use Value: ±1 % tolerance ensures sensor output linearity remains within 0.5 % full-scale error across −40 °C to +125 °C ambient. |
Use Scenario: Generating precise 2.7 V reference for 12-bit SAR ADCs in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Low-drift voltage source for ADC internal reference buffer or external ratiometric scaling network. Use Value: 600 Ω differential resistance minimizes loading-induced offset shift when sourcing ≤100 μA to reference inputs. |
| USB Port Overvoltage Clamp | Low-Power Microcontroller Reset Circuit |
Use Scenario: Clamping transient voltages on USB VBUS lines in portable medical devices during hot-plug events. IC Role / Device Role / Timing Role: Fast-acting shunt protector limiting voltage spikes to safe levels before they reach downstream LDOs or USB PHYs. Use Value: 40 W non-repetitive peak power rating absorbs 100 μs surges up to ±15 V without degradation. |
Use Scenario: Setting threshold for brown-out detection in battery-powered IoT edge nodes using MSP430 or STM32L microcontrollers. IC Role / Device Role / Timing Role: Precision voltage divider element defining reset activation level at 2.7 V ±1 %. Use Value: 100 μA max reverse current at 1 V ensures negligible quiescent drain on coin-cell batteries during sleep 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-B2V7-Q | ±2 % tolerance (2.65 V–2.75 V), same package and power rating | Acceptable where tighter regulation is not required, e.g., non-critical power sequencing | Select for cost-sensitive designs where ±2 % stability suffices and AEC-Q101 is still needed. |
| MMSZ4678T1G | ±5 % tolerance (2.565 V–2.835 V), SOD-123 package, 500 mW Ptot | Higher power handling but looser tolerance and larger footprint; not AEC-Q101 qualified | Choose only for non-automotive applications needing higher continuous power and where board area allows SOD-123. |
Compared with BZX384-B2V7-Q, the BZX384-A2V7-Q offers tighter voltage control essential for precision analog functions; versus MMSZ4678T1G, it trades absolute power headroom for automotive qualification, smaller size, and superior tolerance - making it optimal for space- and reliability-constrained embedded systems.
Availability
BZX384-A2V7-Q is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial reference voltage generation, USB port overvoltage clamping, and low-power microcontroller reset circuits requiring stable component supply with traceable automotive-grade sourcing.
Supply support for BZX384-A2V7-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 discrete and logic devices, with leadership in automotive-qualified components and advanced packaging technologies.
The BZX384-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for precision voltage regulation in harsh-environment automotive and industrial control systems.
FAQ
What is the maximum continuous forward current for BZX384-A2V7-Q?
The device 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 runaway. Forward voltage is specified only for test conditions (0.9 V at 10 mA pulse), not operational use.
Can BZX384-A2V7-Q replace a 2.7 V TL431-based shunt regulator?
No - the BZX384-A2V7-Q is a passive two-terminal Zener diode, lacking the active feedback, adjustable output, and 100 mA sink capability of the TL431. It serves only as a fixed-voltage reference or clamp, not as a programmable shunt regulator. Use requires external current-limiting resistor and accepts no feedback control.
Is the SOD323 package compatible with standard reflow profiles for lead-free assembly?
Yes - Nexperia provides dedicated reflow soldering footprints for SOD323 in the datasheet (Figure 12), specifying 0.5 mm pad width, 1.65 mm pad length, and 0.95 mm spacing. The device is qualified for JEDEC J-STD-020D-compliant lead-free reflow with peak temperatures up to 260 °C and time above liquidus ≤60 seconds.
How does temperature affect the 2.7 V Zener voltage in actual operation?
At IZ = 5 mA, the temperature coefficient ranges from −3.5 mV/K to 0.0 mV/K, meaning the voltage may decrease by up to 3.5 mV per Kelvin rise. For example, from 25 °C to 125 °C (ΔT = 100 K), VZ could drop by up to 350 mV - resulting in ~2.35 V minimum. This drift must be accounted for in wide-temperature applications.
BZX384-A2V7-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):
- 2.7 V
- Tolerance:
- ±1%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-A2V7-QX FAQ
1.How can I place an order for BZX384-A2V7-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-A2V7-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-A2V7-QX reliable?
The price and inventory of BZX384-A2V7-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-A2V7-QX is usually 5 days.
3.What payment methods are accepted for BZX384-A2V7-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-A2V7-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-A2V7-QX?
BZX384-A2V7-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-A2V7-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-A2V7-QX?
For technical support, including BZX384-A2V7-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-A2V7-QX requirements.
6.How does Aetrix verify that BZX384-A2V7-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-A2V7-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-A2V7-QX meets industry standards.
7.What is the process for return or replacement of BZX384-A2V7-QX?
All BZX384-A2V7-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-A2V7-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-A2V7-QX part is unused and in its original packaging.
Return procedure for BZX384-A2V7-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-A2V7-QX Tags
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