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Nexperia USA Inc. BZX384-A5V6-QX
- Part No.:
- BZX384-A5V6-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-A5V6-QX.pdf
- Description:
- DIODE ZENER 5.6V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:2,518
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Product details
Overview
BZX384-A5V6-Q 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 automotive and industrial circuits. It delivers a nominal 5.6 V breakdown voltage at 5 mA, with 400 Ω max differential resistance, 1 μA max reverse current at 4.2 V, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the BZX384-A5V6-Q datasheet, BZX384-A5V6-Q pinout, BZX384-A5V6-Q application, or BZX384-A5V6-Q equivalent, this page provides verified Zener parameters, thermal performance data, automotive-grade reliability context, and direct substitution guidance for circuit-level voltage stabilization design.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across load variations and supply fluctuations. Its 5.6 V nominal Zener voltage is specified at IZ = 5 mA with ±1 % tolerance, and exhibits a positive temperature coefficient of −2.0 mV/K to +2.5 mV/K over 25–150 °C.
The device supports non-repetitive surge handling up to 40 W for 100 μs pulses and dissipates up to 300 mW continuously at Tamb ≤ 25 °C on FR4 PCB. Junction-to-ambient thermal resistance is 415 K/W, enabling reliable operation in compact automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.54 V to 5.66 V at IZ = 5 mA - defines tight regulation window for precision biasing |
| Differential Resistance (rdif) | ≤400 Ω - ensures minimal output voltage shift under load current changes |
| Reverse Current (IR) | ≤1 μA at VR = 4.2 V - guarantees low leakage in standby or sensing circuits |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power limit on standard PCB |
| Non-repetitive Peak Power | 40 W for tp = 100 μs - enables transient overvoltage clamping without failure |
| Junction Temperature (Tj) | −65 °C to +150 °C - supports operation in engine control units and powertrain modules |
| AEC-Q101 Qualified | Yes - validated for automotive discrete semiconductor stress testing per AEC standard |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package with 2 leads; cathode marked by bar on top surface; footprint compatible with reflow and wave soldering per Nexperia Fig. 12/13.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±1 % Zener voltage tolerance | Enables high-accuracy voltage references without post-calibration in sensor signal chains |
| AEC-Q101 qualification | Validated for automotive under-hood use including ESD, temperature cycling, and humidity testing |
| 300 mW total power dissipation | Supports stable regulation in space-constrained modules without forced cooling |
| 415 K/W junction-to-ambient Rth | Permits thermal design margin on single-sided FR4 boards with standard copper area |
| Low 1 μA reverse leakage @ 4.2 V | Minimizes quiescent current impact in battery-powered ECUs and always-on circuits |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Stabilizing reference voltage for analog-to-digital conversion of throttle position and coolant temperature signals. IC Role / Device Role / Timing Role: Zener voltage reference providing fixed 5.6 V bias to op-amp input stages and ADC reference dividers. Use Value: Maintains <±0.056 V regulation error across −40 °C to +125 °C ambient, ensuring consistent sensor linearity. |
Use Scenario: Clamping transient spikes on 4–20 mA current loop transmitters exposed to EMI in factory automation. IC Role / Device Role / Timing Role: Reverse-biased Zener shunt protecting downstream instrumentation amplifier inputs. Use Value: Absorbs 40 W surges for 100 μs without degradation, preserving signal integrity during motor drive switching events. |
| Consumer Power Adapter Feedback | Medical Diagnostic Equipment Biasing |
Use Scenario: Providing precise feedback voltage to optocoupler-based secondary-side regulation in isolated AC/DC adapters. IC Role / Device Role / Timing Role: Zener reference setting error amplifier threshold in TL431-like feedback networks. Use Value: ±1 % tolerance eliminates need for trimming resistors, reducing BOM count and calibration steps. |
Use Scenario: Generating stable bias for photodiode transimpedance amplifiers in portable blood oximeters. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) voltage reference establishing photodiode reverse bias potential. Use Value: Prevents dark current drift in critical analog front-end, maintaining <0.5% measurement accuracy over 8-hour runtime. |
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-B5V6-Q | ±2 % tolerance (5.49–5.71 V), higher 600 Ω rdif, same package and AEC-Q101 rating | Acceptable where tighter regulation not required; slightly reduced regulation stability under load variation | Select when cost sensitivity outweighs ±1 % precision needs in non-critical biasing |
| MMSZ5232B-TP | ±5 % tolerance (5.32–5.88 V), 17 Ω typical rdif, SOD-123 package, no AEC-Q101 qualification | Higher leakage (5 μA @ 4.2 V); unsuitable for automotive or low-power standby designs | Use only in commercial-grade consumer electronics with relaxed reliability requirements |
Compared with BZX384-B5V6-Q and MMSZ5232B-TP, the BZX384-A5V6-Q uniquely combines automotive qualification, ±1 % tolerance, and low leakage-making it the sole choice for safety-critical voltage references in engine management and ADAS subsystems.
Availability
BZX384-A5V6-Q is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor interfaces, medical diagnostic equipment, and consumer power adapter feedback circuits requiring stable component supply with guaranteed long-term continuity.
Supply support for BZX384-A5V6-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 logic, discrete, and MOSFET devices, with manufacturing rooted in process technology leadership and automotive-grade quality systems.
The BZX384-Q series belongs to Nexperia's automotive-qualified Zener diode product line, engineered specifically for precision voltage regulation and transient protection in harsh-environment electronic control modules.
FAQ
What is the maximum continuous forward current for BZX384-A5V6-Q?
The device is rated for 250 mA maximum forward current per Absolute Maximum Ratings (Table 5). However, it is intended for reverse-bias Zener operation; forward conduction is limited to brief test pulses and should not be used in normal circuit operation.
Does BZX384-A5V6-Q require external heat sinking in standard PCB layouts?
No external heatsink is required. With Rth(j-a) = 415 K/W on FR4 PCB and Ptot = 300 mW, junction temperature rise is ~125 °C above ambient at full power-within the 150 °C Tj limit if ambient stays below 25 °C. Derating is recommended above that ambient.
How does the temperature coefficient affect regulation accuracy over automotive temperature range?
At 5.6 V nominal, the temperature coefficient ranges from −2.0 to +2.5 mV/K. Over −40 °C to +125 °C (165 K span), worst-case drift is ±413 mV-approximately ±7.4 % of nominal voltage. This is mitigated by operating at optimal IZ and using compensation in critical analog paths.
Can BZX384-A5V6-Q replace older BZX384-C5V6-Q in existing designs?
Yes, but with improved regulation: BZX384-A5V6-Q offers ±1 % tolerance versus ±5 % for the C-grade part, lower rdif (400 Ω vs. 600 Ω), and identical package/pinning. No layout change is needed, and system-level voltage accuracy improves by up to 4 % at nominal conditions.
BZX384-A5V6-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):
- 5.6 V
- Tolerance:
- ±1%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 2 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-A5V6-QX FAQ
1.How can I place an order for BZX384-A5V6-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-A5V6-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-A5V6-QX reliable?
The price and inventory of BZX384-A5V6-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-A5V6-QX is usually 5 days.
3.What payment methods are accepted for BZX384-A5V6-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-A5V6-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-A5V6-QX?
BZX384-A5V6-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-A5V6-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-A5V6-QX?
For technical support, including BZX384-A5V6-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-A5V6-QX requirements.
6.How does Aetrix verify that BZX384-A5V6-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-A5V6-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-A5V6-QX meets industry standards.
7.What is the process for return or replacement of BZX384-A5V6-QX?
All BZX384-A5V6-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-A5V6-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-A5V6-QX part is unused and in its original packaging.
Return procedure for BZX384-A5V6-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-A5V6-QX 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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