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Nexperia USA Inc. BZX384-B15-QF
- Part No.:
- BZX384-B15-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-B15-QF.pdf
- Description:
- DIODE ZENER 15V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,108
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Product details
Overview
BZX384-B15-QF from Nexperia is a ±2 % 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-B15-QF datasheet, BZX384-B15-QF pinout, BZX384-B15-QF application, or BZX384-B15-QF equivalent, this page delivers verified electrical parameters, thermal resistance values, reverse current limits at 13.5 V, differential resistance of 200 Ω max, and automotive-grade reliability data - all confirmed from Nexperia's official Rev. 1 product data sheet.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable DC voltage under varying load and temperature conditions. Its 15 V nominal Zener voltage is specified at IZ = 5 mA with ±2 % tolerance, and exhibits a temperature coefficient of +0.05 mV/K at that current.
The device supports non-repetitive peak reverse power dissipation up to 40 W (100 μs pulse), has a maximum differential resistance of 200 Ω, and reverse current ≤30 μA at VR = 13.5 V - enabling precise clamping in low-power automotive sensor biasing and ECU supply rail stabilization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.7 V to 15.3 V at IZ = 5 mA - ensures tight regulation for 15 V reference designs |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - defines continuous DC power handling on standard FR4 PCB |
| Differential Resistance (rdif) | ≤200 Ω at IZ = 5 mA - determines output impedance and load regulation error |
| Reverse Current (IR) | ≤30 μA at VR = 13.5 V - guarantees low leakage before breakdown onset |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 μs - enables transient overvoltage suppression in CAN/LIN bus nodes |
| Junction Temperature (Tj) | −65 °C to +150 °C - supports operation in under-hood automotive environments |
| Thermal Resistance (Rth(j-a)) | 415 K/W - quantifies self-heating rise per watt on standard single-sided FR4 board |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package with 2 leads; cathode marked by bar on top surface; footprint compliant with Nexperia's reflow soldering guidelines (0.5 mm pad width, 1.1–1.35 mm pad length).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker aligns with PCB silkscreen bar |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased configuration enables Zener action |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including engine control units and body electronics |
| ±2 % Zener voltage tolerance | Reduces need for post-assembly trimming in 15 V reference circuits |
| Low 200 Ω dynamic impedance | Minimizes output voltage shift under ±1 mA load variation |
| 40 W surge capability | Withstands ISO 7637-2 pulse 1/2/3a transients without degradation |
| SOD323 footprint compatibility | Enables high-density layout in space-constrained ADAS modules and infotainment systems |
Applications
| Automotive Sensor Biasing | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Providing stable 15 V reference to analog front-end of oxygen sensor interface. IC Role / Device Role / Timing Role: Zener voltage reference establishing precision bias point for op-amp signal conditioning. Use Value: Maintains <±10 mV drift over −40 °C to +125 °C ambient due to low tempco (+0.05 mV/K) and AEC-Q101 stability. |
Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers powered from switched 12 V rail. IC Role / Device Role / Timing Role: Clamping voltage divider output to ensure reliable POR and brown-out detection. Use Value: Delivers sub-1 μs response to 12 V transients via 40 W surge rating, preventing false resets during load dump. |
| USB-C Power Negotiation Clamp | Industrial PLC Input Protection |
Use Scenario: Limiting CC line voltage during USB PD communication handshake. IC Role / Device Role / Timing Role: Low-capacitance (≤13 pF) shunt clamp protecting Type-C controller GPIO. Use Value: 13.5 V reverse leakage <30 μA avoids false logic-high detection while enabling fast transient suppression. |
Use Scenario: Protecting 24 V digital input channel against field-wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of optocoupler input stage. Use Value: 300 mW steady-state rating sustains continuous 24 V/1 mA bias current; 40 W pulse rating absorbs IEC 61000-4-5 Level 3 surges. |
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-B15-E3-08 | Same 15 V ±2 % spec, but in tape-and-reel packaging (no QF suffix); identical electricals and AEC-Q101 qualification | No functional difference; suited for automated SMT assembly where bulk packaging not required | Select when standard reel format aligns with pick-and-place workflow and no special marking (QF) is needed |
| MMSZ5245B-TP | 15 V ±5 % tolerance, 500 mW Ptot, SOD-123 package; not AEC-Q101 qualified | Lacks automotive qualification and tighter tolerance; higher power but larger footprint | Acceptable only for non-automotive industrial controls where cost outweighs reliability requirements |
Compared with BZX384-B15-QF, the BZX384-B15-E3-08 offers identical regulation performance in standard packaging, while MMSZ5245B-TP trades automotive compliance and precision for higher power and lower cost - making the QF variant optimal for safety-critical 15 V references where traceability and qualification are mandatory.
Availability
BZX384-B15-QF is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor signal conditioning, and USB-C power interface protection requiring stable component supply, full AEC-Q101 documentation, and guaranteed SOD323 package consistency.
Supply support for BZX384-B15-QF 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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BZX384-Q series belongs to Nexperia's automotive-qualified Zener diode portfolio, engineered specifically for robust voltage reference and transient protection in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage (VR) at which leakage stays below 30 μA?
The BZX384-B15-QF maintains reverse current ≤30 μA at VR = 13.5 V, as specified in Table 8 of the Nexperia datasheet. This value is 10 % below the nominal 15 V Zener voltage and defines the safe operating region prior to breakdown onset.
Does the QF suffix indicate a specific marking or packaging variant?
Yes - the "QF" suffix denotes Nexperia's qualified automotive-grade version with specific traceability markings per Table 4 (marking code "M2" for BZX384-B15-QF), and confirms full AEC-Q101 qualification documented in Section 11 of the datasheet.
Can this diode be used in parallel for higher power dissipation?
No - Zener diodes exhibit negative temperature coefficients at low voltages and positive above ~6 V, but BZX384-B15-QF's +0.05 mV/K coefficient and unit-to-unit VZ variation make current sharing unstable. Parallel operation is not recommended; use a single higher-power device instead.
What is the thermal resistance from junction to solder point (Rth(j-sp))?
The thermal resistance from junction to solder point is 110 K/W, measured at the cathode tab (Table 6). This value is critical for estimating local temperature rise in thermally constrained layouts, such as multi-layer boards with limited copper pour.
BZX384-B15-QF 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:
- ±2%
- 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-B15-QF FAQ
1.How can I place an order for BZX384-B15-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-B15-QF 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-B15-QF reliable?
The price and inventory of BZX384-B15-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-B15-QF is usually 5 days.
3.What payment methods are accepted for BZX384-B15-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-B15-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-B15-QF?
BZX384-B15-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-B15-QF 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-B15-QF?
For technical support, including BZX384-B15-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-B15-QF requirements.
6.How does Aetrix verify that BZX384-B15-QF is sourced from the original manufacturer or authorized distributors?
All BZX384-B15-QF 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-B15-QF meets industry standards.
7.What is the process for return or replacement of BZX384-B15-QF?
All BZX384-B15-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-B15-QF, 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-B15-QF part is unused and in its original packaging.
Return procedure for BZX384-B15-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-B15-QF Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
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SMAZ12-13-F
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