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Nexperia USA Inc. BZX384-A3V6-QX
- Part No.:
- BZX384-A3V6-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-A3V6-QX.pdf
- Description:
- DIODE ZENER 3.6V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:264
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Product details
Overview
BZX384-A3V6-Q from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 3.6 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-A3V6-Q datasheet, BZX384-A3V6-Q pinout, BZX384-A3V6-Q application, or BZX384-A3V6-Q equivalent, key selection criteria include its tight ±1 % VZ tolerance, low 90 Ω differential resistance at 5 mA, 5 μA reverse current at 2.88 V, and AEC-Q101 qualification for under-hood sensor supply regulation and ECU input clamping.
Technical Context
This discrete Zener diode operates in reverse-bias breakdown mode to maintain stable voltage across load terminals, with a temperature coefficient of −3.5 mV/K at 5 mA and junction-to-ambient thermal resistance of 415 K/W on FR4 PCB. Its non-repetitive peak reverse power dissipation is rated at 40 W for 100 μs pulses.
The device features a cathode-anode two-terminal structure, marked with a bar indicating the cathode (Pin 1), and is optimized for low-current regulation (≤250 mA forward, ≤6.0 A surge reverse) in space-constrained automotive and industrial PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (nominal) | 3.6 V at IZ = 5 mA - precise reference voltage for low-power analog rails |
| Tolerance | ±1 % - enables high-accuracy voltage monitoring without trimming |
| Ptot | 300 mW at Tamb ≤ 25 °C - supports continuous operation in compact SOD323 footprint |
| rdif | 90 Ω max at IZ = 5 mA - ensures minimal output voltage drift under load variation |
| IR | 5 μA max at VR = 2.88 V - guarantees low leakage in standby and sleep-mode circuits |
| Tj max | 150 °C - sustains reliability in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade stress testing including HTGB, HTRB, and temperature cycling |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic case with 2 leads, 1.35 mm × 0.85 mm body, 0.45 mm lead pitch, and cathode-bar marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (marked side) | Cathode (K) | Connected to regulated output node; reverse-bias terminal where breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; defines polarity for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMD package | SOD323 footprint (1.35 × 0.85 mm) enables high-density routing on automotive control modules |
| Automotive qualification | AEC-Q101 compliance ensures robustness against thermal shock, humidity, and mechanical stress in vehicle ECUs |
| Stable voltage reference | −3.5 mV/K tempco at 5 mA minimizes drift across −40 °C to +125 °C operating range |
| Surge resilience | 40 W non-repetitive peak reverse power rating protects against transient overvoltage events (e.g., load dump) |
| Low leakage performance | 5 μA max reverse current at 80 % VZ preserves battery life in always-on vehicle subsystems |
Applications
| Automotive Sensor Reference | ECU Input Protection |
|---|---|
Use Scenario: Providing stable 3.6 V bias to analog front-end of oxygen or pressure sensors in engine management systems. IC Role / Device Role / Timing Role: Voltage reference source for ADC reference divider networks and op-amp biasing. Use Value: ±1 % VZ tolerance eliminates need for external calibration, reducing BOM count and test time. |
Use Scenario: Clamping CAN transceiver or microcontroller GPIO inputs against ISO 7637-2 pulse 1/2a surges. IC Role / Device Role / Timing Role: Overvoltage shunt protector limiting input voltage to safe levels during transients. Use Value: 40 W peak power handling absorbs 100 μs surges without degradation, maintaining signal integrity. |
| Low-Power IoT Regulator | Industrial PLC Signal Conditioning |
Use Scenario: Generating local 3.6 V rail for ultra-low-power wireless sensor nodes powered by coin cells. IC Role / Device Role / Timing Role: Precision shunt regulator supplying reference to RF SoC and sensor interface ICs. Use Value: 5 μA reverse leakage at 2.88 V extends battery runtime beyond 10 years in sleep-dominated duty cycles. |
Use Scenario: Stabilizing 3.6 V supply for isolated analog input channel conditioning in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Secondary voltage clamp ensuring consistent excitation for 4–20 mA loop receivers. Use Value: 90 Ω differential resistance maintains <±10 mV output variation across 0–1 mA load changes. |
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-B3V6-Q | ±2 % VZ tolerance, otherwise identical package, power rating, and AEC-Q101 qualification | Acceptable where system-level calibration compensates for wider voltage spread | Select when cost sensitivity outweighs need for ±1 % accuracy in non-critical biasing |
| MMSZ4685T1G | 3.6 V nominal, ±5 % tolerance, SOD-123 package, 500 mW Ptot, not AEC-Q101 qualified | Suitable for commercial-grade power supplies but not automotive under-hood use | Choose only for non-automotive designs requiring higher power margin and larger footprint tolerance |
Compared with BZX384-B3V6-Q and MMSZ4685T1G, the BZX384-A3V6-Q uniquely delivers automotive-grade reliability combined with ±1 % precision in the smallest qualified SOD323 form factor-critical for next-generation ADAS sensor modules where board space and voltage accuracy are simultaneously constrained.
Availability
BZX384-A3V6-Q is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor signal conditioning, low-power IoT node development, and precision analog reference generation requiring stable component supply and long-term lifecycle support.
Supply support for BZX384-A3V6-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 energy-efficient solutions.
The BZX384-Q series belongs to Nexperia's automotive Zener portfolio, engineered specifically for precision voltage reference and transient suppression in harsh-environment electronic control units.
FAQ
What is the maximum continuous reverse current this diode can handle?
The BZX384-A3V6-Q has no specified continuous reverse current rating; it is designed for regulated voltage operation at IZ = 5 mA typical. Its absolute maximum reverse current is defined by power dissipation: at 3.6 V, continuous IZ must remain ≤83 mA to stay within 300 mW Ptot at 25 °C ambient. Derating applies above 25 °C per Rth(j-a) = 415 K/W.
Can this Zener diode be used in parallel for higher power handling?
No-Zener diodes exhibit negative temperature coefficients and manufacturing variations that cause current hogging when paralleled. The BZX384-A3V6-Q must be used individually; for higher power, select a single higher-rated device like the PZM3.6MH or use active regulation instead.
How does the −3.5 mV/K temperature coefficient affect circuit performance?
At 3.6 V nominal, the −3.5 mV/K coefficient means VZ decreases by ~0.42 V over a 120 K rise from −40 °C to +80 °C. This drift is predictable and acceptable in most automotive sensor references, especially when paired with ratiometric ADC architectures that reject common-mode shifts.
Is the SOD323 package compatible with standard reflow soldering profiles?
Yes-the BZX384-A3V6-Q is qualified for lead-free reflow per J-STD-020. Its SOD323 outline matches IPC-7351B SOIC123 footprint, and Nexperia provides recommended stencil aperture (0.5 mm × 0.6 mm) and land pattern dimensions (1.1 mm × 0.8 mm pads, 0.4 mm solder mask opening) in Figure 12 of the datasheet.
BZX384-A3V6-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):
- 3.6 V
- Tolerance:
- ±1%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 5 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-A3V6-QX FAQ
1.How can I place an order for BZX384-A3V6-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-A3V6-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-A3V6-QX reliable?
The price and inventory of BZX384-A3V6-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-A3V6-QX is usually 5 days.
3.What payment methods are accepted for BZX384-A3V6-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-A3V6-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-A3V6-QX?
BZX384-A3V6-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-A3V6-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-A3V6-QX?
For technical support, including BZX384-A3V6-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-A3V6-QX requirements.
6.How does Aetrix verify that BZX384-A3V6-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-A3V6-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-A3V6-QX meets industry standards.
7.What is the process for return or replacement of BZX384-A3V6-QX?
All BZX384-A3V6-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-A3V6-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-A3V6-QX part is unused and in its original packaging.
Return procedure for BZX384-A3V6-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-A3V6-QX Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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