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Nexperia USA Inc. BZX384-C13-QX
- Part No.:
- BZX384-C13-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-C13-QX.pdf
- Description:
- DIODE ZENER 13.25V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,109
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Product details
Overview
BZX384-C13-QX from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 13 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and qualified to AEC-Q101 for automotive power rail stabilization in engine control units and body electronics.
For engineers reviewing the BZX384-C13-QX datasheet, BZX384-C13-QX pinout, BZX384-C13-QX application, or BZX384-C13-QX equivalent, this page delivers verified Zener voltage, differential resistance, temperature coefficient, reverse current limits, and thermal resistance - all confirmed from Nexperia's official Rev. 1 product data sheet dated 6 September 2021.
Technical Context
This device operates as a two-terminal shunt voltage reference, maintaining regulation by conducting reverse current above its specified Zener voltage (VZ = 12.4–14.1 V at IZ = 5 mA). Its low 170 Ω maximum differential resistance ensures stable output under varying load conditions.
Designed for automotive-grade reliability, it features a junction temperature range of −65 °C to +150 °C, non-repetitive peak reverse power dissipation of 40 W (100 μs pulse), and thermal resistance from junction to ambient of 415 K/W on standard FR4 PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.4 V to 14.1 V at IZ = 5 mA - defines regulated output range under nominal bias |
| Differential Resistance (rdif) | ≤170 Ω - determines output voltage variation with current changes in regulation region |
| Reverse Current (IR) | ≤30 μA at VR = 10.4 V - specifies leakage before breakdown onset |
| Temperature Coefficient (SZ) | +0.1 mV/K - indicates positive drift rate of VZ with rising junction temperature |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets continuous DC power limit on standard FR4 PCB |
| Non-repetitive Peak Power (PZSM) | 40 W for 100 μs - supports transient overvoltage clamping in surge protection circuits |
| Junction-to-Ambient Rth | 415 K/W - quantifies thermal bottleneck limiting sustained power handling on standard layout |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic case with 2 leads; cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood applications including ECU, lighting, and sensor modules |
| ±5 % VZ tolerance | Cost-optimized precision for non-critical regulation where tight voltage stability is not required |
| Low-profile SOD323 package | 0.95 mm height enables high-density PCB layouts in space-constrained automotive modules |
| 40 W surge capability | Enables single-device transient voltage suppression in LIN bus or 12 V supply line protection |
| 150 °C max junction temperature | Supports operation in high-ambient environments such as powertrain and battery management systems |
Applications
| Engine Control Unit (ECU) Power Monitoring | Automotive LED Headlamp Driver Reference |
|---|---|
|
Use Scenario: Stabilizing 13 V reference for microcontroller ADC monitoring of 12 V battery rail under load dump transients. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed threshold for overvoltage/undervoltage detection logic. Use Value: 12.4–14.1 V regulation window matches automotive battery operating range while ±5 % tolerance accommodates system-level calibration. |
Use Scenario: Setting precise current-limit threshold in constant-current LED driver IC feedback loop. IC Role / Device Role / Timing Role: Zener clamp establishing reference voltage for op-amp error amplifier input. Use Value: 170 Ω differential resistance minimizes current-sense voltage error across temperature, improving LED brightness consistency. |
| Body Control Module (BCM) Reset Circuit | Infotainment System LDO Input Protection |
|
Use Scenario: Generating clean reset signal when main 13.5 V supply drops below safe operating level during cranking. IC Role / Device Role / Timing Role: Reverse-biased Zener triggering comparator input to assert MCU reset. Use Value: +0.1 mV/K temperature coefficient ensures predictable trip point shift across −40 °C to +125 °C ambient range. |
Use Scenario: Clamping input voltage to 13 V before feeding 5 V LDO in head unit power tree during load dump events. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing 40 W surges without failure. Use Value: 40 W non-repetitive peak power rating meets ISO 7637-2 Pulse 5a requirements for 12 V systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B13-Q | ±2 % VZ tolerance (12.7–13.3 V), lower rdif (150 Ω max) | Suitable where tighter regulation and lower dynamic impedance are required | Select when higher accuracy outweighs cost sensitivity in sensor biasing or precision references |
| MMSZ4687T1G | ±5 % VZ (12.38–13.62 V), 500 mW Ptot, SOD-123 package | Larger footprint, higher power, but no AEC-Q101 qualification | Choose only for non-automotive industrial use requiring higher continuous dissipation |
Compared with BZX384-B13-Q, the C13-QX trades voltage accuracy for cost and remains AEC-Q101 qualified; versus MMSZ4687T1G, it offers automotive compliance and smaller SOD323 size but lower power rating - making it optimal for space-constrained, production-grade automotive modules.
Availability
BZX384-C13-QX is available at Aetrix Electronics and suitable for automotive engine control units, LED lighting drivers, body control modules, and infotainment power protection requiring stable component supply across extended temperature and lifecycle demands.
Supply support for BZX384-C13-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.
The BZX384-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for robust voltage regulation in harsh automotive environments including powertrain, chassis, and comfort electronics.
FAQ
What is the exact Zener voltage range for BZX384-C13-QX at 5 mA test current?
The guaranteed Zener voltage range is 12.4 V to 14.1 V when measured at IZ = 5 mA and Tj = 25 °C, per Table 8 of the Nexperia datasheet Rev. 1. This ±5 % tolerance band reflects the 'C' grade designation and is validated across production lots.
Can BZX384-C13-QX replace BZX384-A13-Q in an existing design?
No direct replacement: BZX384-A13-Q has ±1 % tolerance (12.87–13.13 V), significantly tighter than the C-grade's 12.4–14.1 V range. Substitution may cause out-of-spec regulation in precision circuits but is acceptable in non-critical clamping applications where margin exists.
What is the maximum allowable forward current for BZX384-C13-QX?
The absolute maximum forward current is 250 mA, per Table 5 (Limiting Values). However, forward conduction is not its intended operating mode; sustained forward bias above 100 mA risks thermal overstress due to its 300 mW total power limit and 415 K/W thermal resistance.
Does BZX384-C13-QX require derating above 25 °C ambient temperature?
Yes - its 300 mW power rating applies only at Tamb ≤ 25 °C. Above that, linear derating applies: power must be reduced by 2.4 mW/°C (calculated from 300 mW ÷ (150 °C − 25 °C)) to maintain Tj ≤ 150 °C on standard FR4 PCB.
BZX384-C13-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):
- 13.25 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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-C13-QX FAQ
1.How can I place an order for BZX384-C13-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-C13-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-C13-QX reliable?
The price and inventory of BZX384-C13-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-C13-QX is usually 5 days.
3.What payment methods are accepted for BZX384-C13-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-C13-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-C13-QX?
BZX384-C13-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-C13-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-C13-QX?
For technical support, including BZX384-C13-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-C13-QX requirements.
6.How does Aetrix verify that BZX384-C13-QX is sourced from the original manufacturer or authorized distributors?
All BZX384-C13-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-C13-QX meets industry standards.
7.What is the process for return or replacement of BZX384-C13-QX?
All BZX384-C13-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-C13-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-C13-QX part is unused and in its original packaging.
Return procedure for BZX384-C13-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-C13-QX Tags
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