My Inquiry
My Account
Nexperia USA Inc. BZX384-A2V4-QX
- Part No.:
- BZX384-A2V4-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-A2V4-QX.pdf
- Description:
- DIODE ZENER 2.4V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:649
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX384-A2V4-Q from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 2.4 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage reference and overvoltage protection circuits.
For engineers reviewing the BZX384-A2V4-Q datasheet, BZX384-A2V4-Q pinout, BZX384-A2V4-Q application, or BZX384-A2V4-Q equivalent, this device serves as a precision low-power shunt regulator in ECU power rails, sensor biasing networks, and ADC reference stabilization where tight voltage tolerance and automotive-grade reliability are required.
Technical Context
This Zener diode operates in reverse-biased breakdown mode with a nominal 2.4 V regulation voltage at IZ = 5 mA, differential resistance ≤600 Ω, and temperature coefficient of −3.5 to 0.0 mV/K - enabling stable DC reference generation across −65 °C to +150 °C ambient range.
It supports non-repetitive surge handling up to 40 W (100 μs pulse), exhibits ≤1 μA reverse current at VR = 1 V, and delivers forward voltage ≤0.9 V at IF = 10 mA - confirming suitability for bidirectional clamping and low-loss biasing in compact automotive PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VZ | 2.37 V to 2.43 V at IZ = 5 mA - ensures ±1 % regulation accuracy for precision reference design |
| Total Power Dissipation Ptot | 300 mW at Tamb ≤ 25 °C - defines maximum continuous DC power handling on standard FR4 PCB |
| Differential Resistance rdif | ≤600 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Current IR | ≤100 μA at VR = 1 V - guarantees low leakage in high-impedance bias networks |
| Non-repetitive Peak Power | 40 W for 100 μs - enables transient overvoltage suppression without failure |
| Junction Temperature Range | −65 °C to +150 °C - validates operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - confirms stress-test compliance for automotive electronic control units |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package with 2-terminal configuration, 1.35 mm × 0.85 mm body size, and cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-bias anode-to-cathode voltage establishes Zener conduction |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±1 % VZ tolerance | Enables direct replacement in high-accuracy 2.4 V reference designs without calibration adjustment |
| AEC-Q101 qualification | Validates long-term reliability in automotive power management modules subject to thermal cycling and vibration |
| 300 mW power rating | Supports regulation in low-current sensor interfaces and microcontroller reset circuits without heatsinking |
| SOD323 footprint | Reduces PCB area by >50 % vs. DO-35; compatible with automated reflow assembly using standard SC-76 land pattern |
| −65 °C to +150 °C operation | Permits placement near heat sources (e.g., power MOSFETs) in engine control units without derating |
Applications
| Engine Control Unit Reference | Automotive Sensor Biasing |
|---|---|
|
Use Scenario: Providing stable 2.4 V reference for analog front-end of knock sensor signal conditioning circuit. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing precise DC bias point for op-amp input stage. Use Value: ±1 % VZ tolerance maintains ADC linearity within 0.5 LSB across temperature, eliminating system-level recalibration. |
Use Scenario: Biasing thermistor network in cabin temperature sensor module. IC Role / Device Role / Timing Role: Low-leakage voltage reference setting measurement bridge excitation voltage. Use Value: ≤100 μA reverse current at 1 V prevents loading error in high-impedance (≥100 kΩ) sensing elements. |
| Infotainment System Reset Circuit | Body Control Module Power Supervision |
|
Use Scenario: Generating clean 2.4 V threshold for microcontroller reset supervisor IC. IC Role / Device Role / Timing Role: Precision Zener element defining reset assertion voltage level. Use Value: 600 Ω differential resistance ensures <10 mV droop under 1 mA load variation, guaranteeing deterministic reset timing. |
Use Scenario: Monitoring 3.3 V supply rail in door module MCU power domain. IC Role / Device Role / Timing Role: Overvoltage clamp protecting downstream logic from transient spikes. Use Value: 40 W non-repetitive peak power rating absorbs 100 μs load-dump transients per ISO 7637-2 without degradation. |
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-B2V4-Q | ±2 % VZ tolerance (2.35 V–2.45 V), otherwise identical package, power, and thermal specs | Acceptable where system-level calibration compensates for wider voltage spread | Select when cost reduction is prioritized over absolute reference accuracy |
| MMSZ4678T1G | ±5 % tolerance (2.28 V–2.52 V), same SOD-123 package, 500 mW Ptot, no AEC-Q101 qualification | Limited to non-automotive industrial or consumer use due to lack of automotive qualification | Choose only for cost-sensitive non-automotive applications requiring higher power margin |
Compared with BZX384-B2V4-Q and MMSZ4678T1G, the BZX384-A2V4-Q uniquely combines ±1 % tolerance, AEC-Q101 qualification, and SOD323 miniaturization - making it the sole option for space-constrained automotive reference designs demanding first-pass accuracy and zero field failure risk.
Availability
BZX384-A2V4-Q is available at Aetrix Electronics and suitable for automotive ECU reference design, sensor biasing networks, infotainment reset supervision, and body control module power monitoring requiring stable component supply with full traceability and lifecycle continuity.
Supply support for BZX384-A2V4-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 automotive-grade Zener regulator product line, engineered specifically for precision voltage reference and transient protection in harsh-environment vehicle electronics.
FAQ
What is the maximum continuous reverse current the BZX384-A2V4-Q can sustain at 25 °C?
The device has no specified maximum continuous reverse current; its regulation function relies on controlled Zener conduction. The limiting factor is total power dissipation: at 2.4 V VZ, sustained current must remain ≤125 mA to stay within the 300 mW Ptot limit at Tamb = 25 °C on standard FR4 PCB.
Does the BZX384-A2V4-Q require external series resistance in typical regulator configurations?
Yes - a series current-limiting resistor is mandatory to set operating current within the 5 mA nominal regulation point and prevent thermal runaway. For a 5 V supply, a 520 Ω resistor delivers ~5 mA, ensuring stable 2.4 V output while maintaining junction temperature below 150 °C.
How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
With SZ ranging from −3.5 mV/K to 0.0 mV/K, the worst-case drift is −3.5 mV/K × 165 K = −578 mV - but actual drift is nonlinear and mitigated by operating at IZ ≥ 5 mA. At 125 °C, measured VZ shift is typically <±20 mV, preserving <1 % system accuracy.
Can BZX384-A2V4-Q be used in bidirectional ESD protection circuits?
No - it is a unidirectional Zener diode optimized for reverse-bias regulation, not transient suppression. Its 40 W surge rating applies only to single-polarity reverse pulses. For bidirectional ESD protection, dedicated TVS diodes like PESD5V0S1BA should be used instead.
BZX384-A2V4-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):
- 2.4 V
- Tolerance:
- ±1%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 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-A2V4-QX FAQ
1.How can I place an order for BZX384-A2V4-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-A2V4-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-A2V4-QX reliable?
The price and inventory of BZX384-A2V4-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-A2V4-QX is usually 5 days.
3.What payment methods are accepted for BZX384-A2V4-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-A2V4-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-A2V4-QX?
BZX384-A2V4-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-A2V4-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-A2V4-QX?
For technical support, including BZX384-A2V4-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-A2V4-QX requirements.
6.How does Aetrix verify that BZX384-A2V4-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-A2V4-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-A2V4-QX meets industry standards.
7.What is the process for return or replacement of BZX384-A2V4-QX?
All BZX384-A2V4-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-A2V4-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-A2V4-QX part is unused and in its original packaging.
Return procedure for BZX384-A2V4-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-A2V4-QX Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
