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Nexperia USA Inc. BZX384-C16-QX
- Part No.:
- BZX384-C16-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C16-QX.pdf
- Description:
- DIODE ZENER 16.2V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:3,998
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Product details
Overview
BZX384-C16-Q from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 16 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and qualified to AEC-Q101 for automotive load-dump protection and ECU reference voltage stabilization.
For engineers reviewing the BZX384-C16-Q datasheet, BZX384-C16-Q pinout, BZX384-C16-Q application, or BZX384-C16-Q equivalent, key selection criteria include its 15.3–17.1 V Zener voltage range, 200 Ω max differential resistance at 5 mA, 40 μA reverse current at 12.8 V, -11.2 mV/K temperature coefficient, and suitability for low-power voltage clamping in infotainment power rails and sensor biasing circuits.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its ±5 % tolerance (C-series) targets cost-sensitive automotive subsystems where tight regulation is secondary to robustness and qualification compliance.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it delivers 40 W non-repetitive peak reverse power handling for transient suppression and features 110 K/W junction-to-solder-point thermal resistance to support reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.3 V to 17.1 V at IZ = 5 mA - defines clamping threshold for overvoltage protection in 12 V automotive systems |
| Differential Resistance (rdif) | ≤200 Ω at IZ = 5 mA - determines output impedance and regulation sensitivity to current variation |
| Reverse Current (IR) | ≤40 μA at VR = 12.8 V - ensures minimal leakage during standby in battery-powered modules |
| Temperature Coefficient (SZ) | -11.2 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius in engine bay environments |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets continuous DC power limit on standard FR4 PCB layout |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 μs - enables transient surge absorption without failure during load dump events |
Pinout & Package
Package: SOD323 (SC-76), 2-pin surface-mount plastic package with cathode marked by bar on body; footprint compliant with JEDEC MO-203-AB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; polarity marker aligns with PCB silkscreen bar for automated assembly verification |
| 2 (A) | Anode | Connected to ground or lower-potential rail; forms reverse-biased junction enabling Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per discrete semiconductor stress standards |
| ±5 % Zener tolerance | Cost-optimized tolerance band suitable for non-critical voltage references where 16 V ±0.8 V meets system margin requirements |
| 40 W surge capability | Withstands ISO 7637-2 Pulse 5a load-dump transients without degradation when used with series current-limiting resistor |
| SOD323 footprint | 0.95 mm × 1.65 mm body size enables high-density placement in space-constrained ECUs and ADAS sensor modules |
Applications
| Automotive ECU Power Rail Clamping | Industrial Sensor Bias Reference |
|---|---|
|
Use Scenario: Protects microcontroller I/O and analog front-end inputs from 12 V bus transients in body control modules. IC Role / Device Role / Timing Role: Zener clamp placed between supply rail and ground to shunt excess energy during load dump events. Use Value: Limits voltage excursion to ≤17.1 V, preventing latch-up or oxide damage in downstream 3.3 V/5 V logic. |
Use Scenario: Provides stable bias voltage for precision temperature or pressure sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Passive voltage reference source for op-amp input stages requiring low-drift, low-noise excitation. Use Value: Delivers <1 % regulation error across -40 °C to +125 °C ambient due to predictable -11.2 mV/K coefficient compensation. |
| Consumer IoT Battery Protection | Medical Diagnostic Equipment Reference |
|
Use Scenario: Guards lithium-ion battery management ICs against overvoltage during charging in portable health monitors. IC Role / Device Role / Timing Role: Standby-mode voltage limiter connected across battery terminals with high-impedance divider network. Use Value: Draws only 40 μA at 12.8 V, extending shelf life while maintaining fast response to >15.3 V fault conditions. |
Use Scenario: Supplies calibrated reference for ADC input scaling in ultrasound signal conditioning circuits. IC Role / Device Role / Timing Role: Low-noise Zener element in buffered reference buffer stage preceding 16-bit SAR converter. Use Value: 200 Ω differential resistance minimizes interaction with op-amp feedback loop, preserving linearity and SNR. |
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-B16-Q | ±2 % tolerance (15.7–16.3 V), 150 Ω rdif, lower tempco (-10.4 mV/K) | Better regulation stability in narrow-voltage-margin designs but higher cost | Select when tighter voltage accuracy is required and AEC-Q101 compliance remains mandatory |
| MMSZ5245B-TP | ±5 % tolerance (14.25–15.75 V), 170 Ω rdif, 500 mW Ptot, SOD-123 package | Higher power rating but larger footprint and non-automotive-qualified | Choose for industrial prototypes needing higher continuous dissipation where AEC-Q101 is not required |
Compared with BZX384-B16-Q, this part trades voltage precision for cost and surge robustness; versus MMSZ5245B-TP, it offers automotive qualification and smaller size at lower power, making it optimal for production automotive modules with strict space and reliability constraints.
Availability
BZX384-C16-Q is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and medical diagnostic equipment manufacturing requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX384-C16-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 solutions, headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.
The BZX384-Q series belongs to Nexperia's automotive-qualified Zener diode product line, engineered specifically for voltage regulation and transient suppression in harsh-environment electronic control units and safety-critical subsystems.
FAQ
What is the maximum continuous forward current for BZX384-C16-Q?
The device is not intended for forward conduction; its absolute maximum forward current is 250 mA per limiting values table, but sustained forward bias exceeds its design purpose and risks thermal runaway. It must be operated in reverse-biased Zener mode only, with forward voltage limited to 0.9 V at 10 mA per characteristics table.
Can BZX384-C16-Q replace BZX384-A16-Q in an existing design?
No direct replacement without circuit review: BZX384-A16-Q has ±1 % tolerance (15.84–16.16 V), while BZX384-C16-Q spans 15.3–17.1 V. This wider range may cause over-regulation in precision references or insufficient clamping in transient protection-verify worst-case voltage margins and temperature drift before substitution.
How does the -11.2 mV/K temperature coefficient affect performance at 125 °C?
At 125 °C ambient (assuming Tj ≈ 135 °C), the Zener voltage shifts by approximately -1.12 V from 25 °C value, resulting in ~15.0–16.0 V operation. This is within spec for most automotive clamping applications but requires validation against system-level voltage thresholds and derating curves in the datasheet.
Is the SOD323 package compatible with standard reflow profiles for lead-free soldering?
Yes-the device is qualified for IPC/JEDEC J-STD-020D reflow profiles. The recommended peak temperature is 260 °C for ≤30 seconds, with ramp rates ≤3 °C/s pre-peak and cooling rate ≥1 °C/s post-peak. Thermal resistance data confirms safe operation when using the recommended FR4 footprint with 0.5 mm solder land width per pin.
BZX384-C16-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):
- 16.2 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.2 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-C16-QX FAQ
1.How can I place an order for BZX384-C16-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C16-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-C16-QX reliable?
The price and inventory of BZX384-C16-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-C16-QX is usually 5 days.
3.What payment methods are accepted for BZX384-C16-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C16-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C16-QX?
BZX384-C16-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C16-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-C16-QX?
For technical support, including BZX384-C16-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C16-QX requirements.
6.How does Aetrix verify that BZX384-C16-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-C16-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-C16-QX meets industry standards.
7.What is the process for return or replacement of BZX384-C16-QX?
All BZX384-C16-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C16-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-C16-QX part is unused and in its original packaging.
Return procedure for BZX384-C16-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C16-QX Tags
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