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Nexperia USA Inc. BZX384-A15-QX
- Part No.:
- BZX384-A15-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-A15-QX.pdf
- Description:
- DIODE ZENER 15V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
BZX384-A15-QX from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 15 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-A15-QX datasheet, BZX384-A15-QX pinout, BZX384-A15-QX application, or BZX384-A15-QX equivalent, this part serves as a precision low-power shunt regulator with 15.0 V ±1 % tolerance, 75 Ω typical differential resistance, and 0.05 μA reverse current at 12 V, supporting stable biasing and clamping in space-constrained automotive and industrial PCBs.
Technical Context
This device operates in reverse-biased Zener breakdown mode, delivering stable 15.0 V regulation across 1 mA to 20 mA test currents with temperature coefficient of +9.2 mV/K at 5 mA. Its junction-to-ambient thermal resistance is 415 K/W on FR4 PCB, limiting continuous operation to ≤300 mW at Tamb ≤25 °C.
Designed for automotive-grade reliability, it withstands non-repetitive peak reverse power up to 40 W (100 μs pulse) and junction temperatures up to 150 °C, with reverse leakage <0.05 μA at VR = 12 V and forward voltage ≤0.9 V at IF = 10 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 14.85 V to 15.15 V at IZ = 5 mA - ensures ±1 % regulation accuracy for precision reference applications |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - defines maximum continuous DC power handling on standard FR4 PCB |
| Differential Resistance (rdif) | 200 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤0.05 μA at VR = 12 V - guarantees minimal leakage in high-impedance bias networks |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - enables low-loss forward conduction during transient clamping |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 μs - supports surge suppression in automotive load-dump scenarios |
| Junction Temperature (Tj) | −65 °C to +150 °C - validates operation across full automotive ambient range |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package with 2-terminal configuration; cathode marked by bar on top surface; footprint compliant with JEDEC MO-213AA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; carries reverse current during Zener conduction |
| 2 | Anode (A) | Connected to ground or lower-potential rail; establishes reference potential for breakdown |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood and infotainment systems per stress-test requirements |
| ±1 % voltage tolerance | Enables tight regulation without post-production trimming in safety-critical sensor interfaces |
| Low differential resistance | 200 Ω max improves line/load regulation stability in feedback loops and reference dividers |
| Small SOD323 footprint | 1.8 mm × 1.35 mm body size supports high-density routing in compact ECUs and ADAS modules |
| 150 °C junction rating | Permits reliable operation in engine control units exposed to sustained high ambient temperatures |
Applications
| Automotive Sensor Biasing | Industrial Power Supply Clamping |
|---|---|
Use Scenario: Providing stable 15 V reference for analog front-end amplifiers in wheel-speed or pressure sensors. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise bias point for op-amp input stages. Use Value: ±1 % tolerance and <0.05 μA leakage maintain ADC accuracy over −40 °C to +125 °C ambient. |
Use Scenario: Clamping transient overvoltage spikes on 12 V rail in PLC I/O modules. IC Role / Device Role / Timing Role: Fast-acting Zener clamp absorbing energy during inductive switching events. Use Value: 40 W non-repetitive peak power rating handles 100 μs surges without degradation. |
| Consumer Device Voltage Monitoring | Automotive Lighting Control |
Use Scenario: Detecting undervoltage conditions in battery-powered smart home hubs. IC Role / Device Role / Timing Role: Precision threshold detector using reverse breakdown as trip point. Use Value: Tight 14.85–15.15 V window enables accurate brown-out detection with minimal hysteresis. |
Use Scenario: Regulating gate drive voltage for LED driver MOSFETs in headlamp ECU. IC Role / Device Role / Timing Role: Low-noise 15 V shunt regulator stabilizing level-shifted logic signals. Use Value: 75 Ω typical rdif minimizes output ripple affecting PWM timing fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B15-Q | ±2 % tolerance (14.7–15.3 V), higher IR (0.1 μA at 12 V) | Acceptable where tighter regulation not required; lower cost | Select when ±2 % accuracy suffices and leakage budget allows 2× increase |
| MMSZ5245B-TP | ±5 % tolerance (14.25–15.75 V), SOD-123 package, 500 mW Ptot | Higher power handling but larger footprint and looser tolerance | Choose only if board layout permits larger package and 500 mW dissipation is needed |
Compared with BZX384-B15-Q and MMSZ5245B-TP, BZX384-A15-QX delivers superior voltage accuracy and lower leakage for precision biasing, while maintaining identical SOD323 footprint and AEC-Q101 qualification-making it optimal for automotive sensor references where regulation stability directly impacts measurement integrity.
Availability
BZX384-A15-QX is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial power supply clamping, consumer voltage monitoring, and automotive lighting control requiring stable component supply with AEC-Q101 compliance and traceable sourcing.
Supply support for BZX384-A15-QX 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.
The BZX384-Q series belongs to Nexperia's AEC-Q101-qualified Zener regulator portfolio, engineered specifically for precision voltage reference and overvoltage protection in harsh-environment automotive and industrial electronics.
FAQ
What is the guaranteed breakdown voltage range for BZX384-A15-QX at 5 mA?
The guaranteed breakdown voltage is 14.85 V to 15.15 V at IZ = 5 mA, reflecting its ±1 % tolerance specification. This range is validated per AEC-Q101 test conditions and applies across the full operating temperature range of −65 °C to +150 °C junction temperature.
Can BZX384-A15-QX be used in place of a 15 V Zener with ±5 % tolerance?
Yes, but only where tighter regulation improves system performance-such as in sensor biasing or reference divider networks. Its ±1 % tolerance reduces output variation by 80 % versus ±5 % parts, lowering calibration overhead and improving long-term stability without changing circuit topology.
Is thermal derating required above 25 °C ambient?
Yes. Total power dissipation must be linearly derated above Tamb = 25 °C at 2.4 mW/°C, based on Rth(j-a) = 415 K/W. At 85 °C ambient, maximum continuous power drops to 156 mW to maintain Tj ≤ 150 °C, requiring careful layout and thermal relief design.
Does the marking code '35' correspond exclusively to BZX384-A15-QX?
Yes. Per Nexperia's official marking table, '35' is the unique top-side marking for BZX384-A15-QX. This distinguishes it from BZX384-B15-Q (marked 'M2') and BZX384-C15-Q (marked 'DD'), enabling unambiguous visual identification on assembled PCBs.
BZX384-A15-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):
- 15 V
- Tolerance:
- ±1%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.5 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-A15-QX FAQ
1.How can I place an order for BZX384-A15-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-A15-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-A15-QX reliable?
The price and inventory of BZX384-A15-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-A15-QX is usually 5 days.
3.What payment methods are accepted for BZX384-A15-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-A15-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-A15-QX?
BZX384-A15-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-A15-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-A15-QX?
For technical support, including BZX384-A15-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-A15-QX requirements.
6.How does Aetrix verify that BZX384-A15-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-A15-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-A15-QX meets industry standards.
7.What is the process for return or replacement of BZX384-A15-QX?
All BZX384-A15-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-A15-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-A15-QX part is unused and in its original packaging.
Return procedure for BZX384-A15-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-A15-QX Tags
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